diff --git a/app/src/main/res/layout-land-v17/fragment_year.xml b/app/src/main/res/layout-land-v17/fragment_year.xml
new file mode 100644
index 000000000..292248855
--- /dev/null
+++ b/app/src/main/res/layout-land-v17/fragment_year.xml
@@ -0,0 +1,332 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TableLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/calendar_holder"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="@dimen/yearly_padding_side">
+
+    <TableRow android:layout_weight="1">
+
+        <RelativeLayout
+            android:id="@+id/month_1_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginEnd="@dimen/yearly_padding_full"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_1_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/january"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_1"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_below="@+id/month_1_label"
+                android:layout_marginStart="@dimen/yearly_month_padding" />
+
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/month_2_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_2_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/february"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_2"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_below="@+id/month_2_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"/>
+
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/month_3_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginStart="@dimen/yearly_padding_full"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_3_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/march"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_3"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_below="@+id/month_3_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"/>
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/month_4_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginEnd="@dimen/yearly_padding_full"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_4_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/april"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_4"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@+id/month_4_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                app:days="30"/>
+        </RelativeLayout>
+    </TableRow>
+
+    <TableRow android:layout_weight="1">
+
+        <RelativeLayout
+            android:id="@+id/month_5_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_5_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/may"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_5"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@+id/month_5_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                android:layout_marginStart="@dimen/yearly_month_padding"/>
+
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/month_6_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginStart="@dimen/yearly_padding_full"
+            android:layout_marginStart="@dimen/yearly_padding_full"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_6_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/june"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_6"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@+id/month_6_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                app:days="30"/>
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/month_7_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginEnd="@dimen/yearly_padding_full"
+            android:layout_marginEnd="@dimen/yearly_padding_full"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_7_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/july"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_7"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@+id/month_7_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                android:layout_marginStart="@dimen/yearly_month_padding"/>
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/month_8_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_8_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/august"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_8"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@+id/month_8_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                android:layout_marginStart="@dimen/yearly_month_padding"/>
+        </RelativeLayout>
+    </TableRow>
+
+    <TableRow android:layout_weight="1">
+
+
+        <RelativeLayout
+            android:id="@+id/month_9_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginStart="@dimen/yearly_padding_full"
+            android:layout_marginStart="@dimen/yearly_padding_full"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_9_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/september"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_9"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@+id/month_9_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                app:days="30"/>
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/month_10_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginEnd="@dimen/yearly_padding_full"
+            android:layout_marginEnd="@dimen/yearly_padding_full"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_10_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/october"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_10"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@+id/month_10_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                android:layout_marginStart="@dimen/yearly_month_padding"/>
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/month_11_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_11_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/november"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_11"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@+id/month_11_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                app:days="30"/>
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/month_12_holder"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_marginStart="@dimen/yearly_padding_full"
+            android:layout_marginStart="@dimen/yearly_padding_full"
+            android:layout_weight="1">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/month_12_label"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:text="@string/december"
+                android:textAllCaps="true"
+                android:textSize="@dimen/normal_text_size"/>
+
+            <com.simplemobiletools.calendar.pro.views.SmallMonthView
+                android:id="@+id/month_12"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@+id/month_12_label"
+                android:layout_marginStart="@dimen/yearly_month_padding"
+                android:layout_marginStart="@dimen/yearly_month_padding"/>
+
+        </RelativeLayout>
+    </TableRow>
+</TableLayout>
diff --git a/app/src/main/res/layout-land/fragment_year.xml b/app/src/main/res/layout-land/fragment_year.xml
index 87694bbd3..d622d72f5 100644
--- a/app/src/main/res/layout-land/fragment_year.xml
+++ b/app/src/main/res/layout-land/fragment_year.xml
@@ -40,8 +40,8 @@
             android:id="@+id/month_2_holder"
             android:layout_width="0dp"
             android:layout_height="match_parent"
-            android:layout_marginLeft="@dimen/yearly_padding_half"
-            android:layout_marginRight="@dimen/yearly_padding_half"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
             android:layout_weight="1">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -123,8 +123,8 @@
             android:id="@+id/month_5_holder"
             android:layout_width="0dp"
             android:layout_height="match_parent"
-            android:layout_marginLeft="@dimen/yearly_padding_half"
-            android:layout_marginRight="@dimen/yearly_padding_half"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
             android:layout_weight="1">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -203,8 +203,8 @@
             android:id="@+id/month_8_holder"
             android:layout_width="0dp"
             android:layout_height="match_parent"
-            android:layout_marginLeft="@dimen/yearly_padding_half"
-            android:layout_marginRight="@dimen/yearly_padding_half"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
             android:layout_weight="1">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -286,8 +286,8 @@
             android:id="@+id/month_11_holder"
             android:layout_width="0dp"
             android:layout_height="match_parent"
-            android:layout_marginLeft="@dimen/yearly_padding_half"
-            android:layout_marginRight="@dimen/yearly_padding_half"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
             android:layout_weight="1">
 
             <com.simplemobiletools.commons.views.MyTextView
diff --git a/app/src/main/res/layout/activity_event.xml b/app/src/main/res/layout/activity_event.xml
index 1cc6e0dc4..2c710b85d 100644
--- a/app/src/main/res/layout/activity_event.xml
+++ b/app/src/main/res/layout/activity_event.xml
@@ -16,9 +16,9 @@
             android:id="@+id/event_title"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_marginLeft="@dimen/activity_margin"
+            android:layout_marginStart="@dimen/activity_margin"
             android:layout_marginTop="@dimen/activity_margin"
-            android:layout_marginRight="@dimen/activity_margin"
+            android:layout_marginEnd="@dimen/activity_margin"
             android:hint="@string/title"
             android:inputType="textCapSentences"
             android:maxLength="180"
@@ -32,9 +32,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_below="@+id/event_title"
-            android:layout_marginLeft="@dimen/activity_margin"
+            android:layout_marginStart="@dimen/activity_margin"
             android:layout_marginTop="@dimen/activity_margin"
-            android:layout_toLeftOf="@+id/event_show_on_map"
+            android:layout_toStartOf="@+id/event_show_on_map"
             android:hint="@string/location"
             android:inputType="textCapWords"
             android:maxLength="180"
@@ -54,8 +54,8 @@
             android:layout_marginEnd="@dimen/activity_margin"
             android:layout_marginRight="@dimen/activity_margin"
             android:background="?attr/selectableItemBackgroundBorderless"
-            android:paddingLeft="@dimen/small_margin"
-            android:paddingRight="@dimen/small_margin"
+            android:paddingStart="@dimen/small_margin"
+            android:paddingEnd="@dimen/small_margin"
             android:src="@drawable/ic_place"/>
 
         <com.simplemobiletools.commons.views.MyEditText
@@ -63,9 +63,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_below="@+id/event_location"
-            android:layout_marginLeft="@dimen/activity_margin"
+            android:layout_marginStart="@dimen/activity_margin"
             android:layout_marginTop="@dimen/activity_margin"
-            android:layout_marginRight="@dimen/activity_margin"
+            android:layout_marginEnd="@dimen/activity_margin"
             android:autoLink="all"
             android:gravity="top"
             android:hint="@string/description"
@@ -383,11 +383,11 @@
                 android:layout_height="wrap_content"
                 android:layout_marginStart="@dimen/small_margin"
                 android:layout_marginLeft="@dimen/small_margin"
-                android:layout_toLeftOf="@+id/event_caldav_calendar_color"
+                android:layout_toStartOf="@+id/event_caldav_calendar_color"
                 android:ellipsize="end"
                 android:maxLines="1"
                 android:paddingTop="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:paddingBottom="@dimen/tiny_margin"
                 android:textSize="@dimen/day_text_size"
                 tools:text="My calendar"/>
@@ -399,10 +399,10 @@
                 android:layout_below="@+id/event_caldav_calendar_name"
                 android:layout_marginStart="@dimen/small_margin"
                 android:layout_marginLeft="@dimen/small_margin"
-                android:layout_toLeftOf="@+id/event_caldav_calendar_color"
+                android:layout_toStartOf="@+id/event_caldav_calendar_color"
                 android:ellipsize="end"
                 android:maxLines="1"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:paddingBottom="@dimen/medium_margin"
                 android:textSize="@dimen/meta_text_size"
                 tools:text="hello@simplemobiletools.com"/>
@@ -459,8 +459,8 @@
                 android:layout_height="wrap_content"
                 android:layout_marginStart="@dimen/small_margin"
                 android:layout_marginLeft="@dimen/small_margin"
-                android:layout_marginRight="@dimen/medium_margin"
-                android:layout_toLeftOf="@+id/event_type_color"
+                android:layout_marginEnd="@dimen/medium_margin"
+                android:layout_toStartOf="@+id/event_type_color"
                 android:paddingTop="@dimen/normal_margin"
                 android:paddingBottom="@dimen/normal_margin"
                 android:textSize="@dimen/day_text_size"/>
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index e31f79318..a2b177cd6 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -44,8 +44,8 @@
             android:layout_centerHorizontal="true"
             android:layout_marginTop="@dimen/activity_margin"
             android:gravity="center"
-            android:paddingLeft="@dimen/activity_margin"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingStart="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:text="@string/no_items_found"
             android:textSize="@dimen/bigger_text_size"/>
 
@@ -57,8 +57,8 @@
             android:layout_centerHorizontal="true"
             android:gravity="center"
             android:paddingBottom="@dimen/medium_margin"
-            android:paddingLeft="@dimen/activity_margin"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingStart="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:paddingTop="@dimen/medium_margin"
             android:text="@string/type_2_characters"
             android:textSize="@dimen/bigger_text_size"/>
diff --git a/app/src/main/res/layout/activity_settings.xml b/app/src/main/res/layout/activity_settings.xml
index 4fc431e1e..ec0744b3f 100644
--- a/app/src/main/res/layout/activity_settings.xml
+++ b/app/src/main/res/layout/activity_settings.xml
@@ -17,9 +17,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -39,9 +39,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -61,9 +61,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -84,9 +84,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -107,9 +107,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -148,9 +148,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -171,9 +171,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -194,9 +194,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -206,8 +206,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_reminder_sound"
                 android:layout_toLeftOf="@+id/settings_reminder_sound"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/reminder_sound"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -228,9 +228,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -240,8 +240,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_reminder_audio_stream"
                 android:layout_toLeftOf="@+id/settings_reminder_audio_stream"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/reminder_stream"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -263,9 +263,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -286,9 +286,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -298,8 +298,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_snooze_time"
                 android:layout_toLeftOf="@+id/settings_snooze_time"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/snooze_time"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -321,9 +321,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -344,9 +344,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -356,8 +356,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_default_reminder_1"
                 android:layout_toLeftOf="@+id/settings_default_reminder_1"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/default_reminder_1"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -379,9 +379,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -391,8 +391,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_default_reminder_2"
                 android:layout_toLeftOf="@+id/settings_default_reminder_2"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/default_reminder_2"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -414,9 +414,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -426,8 +426,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_default_reminder_3"
                 android:layout_toLeftOf="@+id/settings_default_reminder_3"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/default_reminder_3"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -467,9 +467,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -490,9 +490,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -512,9 +512,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin"
             android:visibility="gone">
 
@@ -523,8 +523,8 @@
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_centerVertical="true"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/manage_synced_calendars"/>
 
         </RelativeLayout>
@@ -553,9 +553,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -565,8 +565,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_start_weekly_at"
                 android:layout_toLeftOf="@+id/settings_start_weekly_at"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/start_day_at"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -587,9 +587,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -599,8 +599,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_end_weekly_at"
                 android:layout_toLeftOf="@+id/settings_end_weekly_at"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/end_day_at"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -640,9 +640,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -662,9 +662,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -703,9 +703,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -725,9 +725,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -737,8 +737,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_display_past_events"
                 android:layout_toLeftOf="@+id/settings_display_past_events"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/display_past_events"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -777,9 +777,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -789,8 +789,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_font_size"
                 android:layout_toLeftOf="@+id/settings_font_size"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/font_size"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -811,9 +811,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -823,8 +823,8 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/settings_list_widget_view_to_open"
                 android:layout_toLeftOf="@+id/settings_list_widget_view_to_open"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/view_to_open_from_widget"/>
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -845,9 +845,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -885,9 +885,9 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/medium_margin"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/activity_margin">
 
             <com.simplemobiletools.commons.views.MySwitchCompat
@@ -907,9 +907,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
             android:paddingTop="@dimen/bigger_margin"
-            android:paddingRight="@dimen/normal_margin"
+            android:paddingEnd="@dimen/normal_margin"
             android:paddingBottom="@dimen/bigger_margin">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -917,8 +917,8 @@
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_centerVertical="true"
-                android:paddingLeft="@dimen/medium_margin"
-                android:paddingRight="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/delete_all_events"/>
 
         </RelativeLayout>
diff --git a/app/src/main/res/layout/calendar_item_calendar.xml b/app/src/main/res/layout/calendar_item_calendar.xml
index 4aefba01c..e6feacf8a 100644
--- a/app/src/main/res/layout/calendar_item_calendar.xml
+++ b/app/src/main/res/layout/calendar_item_calendar.xml
@@ -14,8 +14,8 @@
         android:background="@null"
         android:clickable="false"
         android:paddingBottom="@dimen/activity_margin"
-        android:paddingLeft="@dimen/big_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingStart="@dimen/big_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:paddingTop="@dimen/activity_margin"
         tools:text="Calendar name"/>
 
diff --git a/app/src/main/res/layout/day_monthly_event_view.xml b/app/src/main/res/layout/day_monthly_event_view.xml
index 1f703c368..bada70437 100644
--- a/app/src/main/res/layout/day_monthly_event_view.xml
+++ b/app/src/main/res/layout/day_monthly_event_view.xml
@@ -10,8 +10,8 @@
     android:gravity="start"
     android:hyphenationFrequency="none"
     android:maxLines="1"
-    android:paddingLeft="@dimen/tiny_margin"
-    android:paddingRight="@dimen/tiny_margin"
+    android:paddingStart="@dimen/tiny_margin"
+    android:paddingEnd="@dimen/tiny_margin"
     android:textSize="@dimen/day_monthly_text_size"
     tools:targetApi="m"
     tools:text="1"/>
diff --git a/app/src/main/res/layout/day_monthly_number_view.xml b/app/src/main/res/layout/day_monthly_number_view.xml
index 57954f1ad..1ba84466e 100644
--- a/app/src/main/res/layout/day_monthly_number_view.xml
+++ b/app/src/main/res/layout/day_monthly_number_view.xml
@@ -5,12 +5,12 @@
     android:id="@+id/day_monthly_number_id"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:layout_marginLeft="@dimen/tiny_margin"
-    android:layout_marginRight="@dimen/tiny_margin"
+    android:layout_marginStart="@dimen/tiny_margin"
+    android:layout_marginEnd="@dimen/tiny_margin"
     android:ellipsize="none"
     android:gravity="center_horizontal"
     android:maxLines="1"
-    android:paddingLeft="@dimen/tiny_margin"
-    android:paddingRight="@dimen/tiny_margin"
+    android:paddingStart="@dimen/tiny_margin"
+    android:paddingEnd="@dimen/tiny_margin"
     android:textSize="@dimen/normal_text_size"
     tools:text="1"/>
diff --git a/app/src/main/res/layout/dialog_custom_event_repeat_interval.xml b/app/src/main/res/layout/dialog_custom_event_repeat_interval.xml
index f4320996a..941b1d1e1 100644
--- a/app/src/main/res/layout/dialog_custom_event_repeat_interval.xml
+++ b/app/src/main/res/layout/dialog_custom_event_repeat_interval.xml
@@ -10,8 +10,8 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical"
-        android:paddingLeft="@dimen/activity_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:paddingTop="@dimen/activity_margin">
 
         <com.simplemobiletools.commons.views.MyEditText
diff --git a/app/src/main/res/layout/dialog_delete_event.xml b/app/src/main/res/layout/dialog_delete_event.xml
index 06f663de2..b25238474 100644
--- a/app/src/main/res/layout/dialog_delete_event.xml
+++ b/app/src/main/res/layout/dialog_delete_event.xml
@@ -5,8 +5,8 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="vertical"
-    android:paddingLeft="@dimen/big_margin"
-    android:paddingRight="@dimen/big_margin"
+    android:paddingStart="@dimen/big_margin"
+    android:paddingEnd="@dimen/big_margin"
     android:paddingTop="@dimen/big_margin">
 
     <com.simplemobiletools.commons.views.MyTextView
diff --git a/app/src/main/res/layout/dialog_edit_repeating_event.xml b/app/src/main/res/layout/dialog_edit_repeating_event.xml
index 8b09b47d6..071a934c4 100644
--- a/app/src/main/res/layout/dialog_edit_repeating_event.xml
+++ b/app/src/main/res/layout/dialog_edit_repeating_event.xml
@@ -5,8 +5,8 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="vertical"
-    android:paddingLeft="@dimen/big_margin"
-    android:paddingRight="@dimen/big_margin"
+    android:paddingStart="@dimen/big_margin"
+    android:paddingEnd="@dimen/big_margin"
     android:paddingTop="@dimen/big_margin">
 
     <com.simplemobiletools.commons.views.MyTextView
diff --git a/app/src/main/res/layout/dialog_event_type.xml b/app/src/main/res/layout/dialog_event_type.xml
index db7db9d05..7089962df 100644
--- a/app/src/main/res/layout/dialog_event_type.xml
+++ b/app/src/main/res/layout/dialog_event_type.xml
@@ -5,8 +5,8 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    android:paddingLeft="@dimen/activity_margin"
-    android:paddingRight="@dimen/activity_margin"
+    android:paddingStart="@dimen/activity_margin"
+    android:paddingEnd="@dimen/activity_margin"
     android:paddingTop="@dimen/activity_margin">
 
     <com.simplemobiletools.commons.views.MyTextView
diff --git a/app/src/main/res/layout/dialog_export_events.xml b/app/src/main/res/layout/dialog_export_events.xml
index ea3cca152..efad9fce7 100644
--- a/app/src/main/res/layout/dialog_export_events.xml
+++ b/app/src/main/res/layout/dialog_export_events.xml
@@ -11,9 +11,9 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical"
-        android:paddingLeft="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
         android:paddingTop="@dimen/activity_margin"
-        android:paddingRight="@dimen/activity_margin">
+        android:paddingEnd="@dimen/activity_margin">
 
         <com.simplemobiletools.commons.views.MyTextView
             android:id="@+id/export_events_folder_label"
@@ -26,10 +26,10 @@
             android:id="@+id/export_events_folder"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_marginLeft="@dimen/activity_margin"
+            android:layout_marginStart="@dimen/activity_margin"
             android:layout_marginBottom="@dimen/activity_margin"
             android:paddingTop="@dimen/small_margin"
-            android:paddingRight="@dimen/small_margin"
+            android:paddingEnd="@dimen/small_margin"
             android:paddingBottom="@dimen/small_margin"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -43,10 +43,10 @@
             android:id="@+id/export_events_filename"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_marginLeft="@dimen/activity_margin"
+            android:layout_marginStart="@dimen/activity_margin"
             android:layout_marginBottom="@dimen/activity_margin"
             android:paddingTop="@dimen/normal_margin"
-            android:paddingRight="@dimen/small_margin"
+            android:paddingEnd="@dimen/small_margin"
             android:textSize="@dimen/normal_text_size"/>
 
         <com.simplemobiletools.commons.views.MyAppCompatCheckbox
diff --git a/app/src/main/res/layout/dialog_import_events.xml b/app/src/main/res/layout/dialog_import_events.xml
index c34607476..e555ba7b8 100644
--- a/app/src/main/res/layout/dialog_import_events.xml
+++ b/app/src/main/res/layout/dialog_import_events.xml
@@ -7,13 +7,13 @@
     android:layout_height="match_parent"
     android:orientation="vertical"
     android:paddingTop="@dimen/activity_margin"
-    android:paddingRight="@dimen/activity_margin">
+    android:paddingEnd="@dimen/activity_margin">
 
     <com.simplemobiletools.commons.views.MyTextView
         android:id="@+id/import_events_event_type_label"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginLeft="@dimen/activity_margin"
+        android:layout_marginStart="@dimen/activity_margin"
         android:text="@string/default_event_type"
         android:textSize="@dimen/smaller_text_size"/>
 
@@ -21,7 +21,7 @@
         android:id="@+id/import_event_type_holder"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginLeft="@dimen/activity_margin"
+        android:layout_marginStart="@dimen/activity_margin"
         android:background="?attr/selectableItemBackground"
         android:padding="@dimen/small_margin">
 
@@ -30,9 +30,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_centerVertical="true"
-            android:layout_toLeftOf="@+id/import_event_type_color"
-            android:paddingLeft="@dimen/medium_margin"
-            android:paddingRight="@dimen/medium_margin"
+            android:layout_toStartOf="@+id/import_event_type_color"
+            android:paddingStart="@dimen/medium_margin"
+            android:paddingEnd="@dimen/medium_margin"
             tools:text="@string/regular_event"/>
 
         <ImageView
@@ -51,7 +51,7 @@
         android:id="@+id/import_events_checkbox"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginLeft="@dimen/normal_margin"
+        android:layout_marginStart="@dimen/normal_margin"
         android:paddingTop="@dimen/activity_margin"
         android:paddingBottom="@dimen/activity_margin"
         android:text="@string/override_event_types"/>
diff --git a/app/src/main/res/layout/dialog_select_event_type_color.xml b/app/src/main/res/layout/dialog_select_event_type_color.xml
index 7d1d662fa..f994eb843 100644
--- a/app/src/main/res/layout/dialog_select_event_type_color.xml
+++ b/app/src/main/res/layout/dialog_select_event_type_color.xml
@@ -15,9 +15,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="?attr/selectableItemBackground"
-            android:paddingLeft="@dimen/big_margin"
+            android:paddingStart="@dimen/big_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:paddingBottom="@dimen/activity_margin"
             android:text="@string/select_a_different_caldav_color"
             android:textSize="@dimen/normal_text_size"/>
@@ -35,9 +35,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_below="@+id/dialog_select_event_type_other_divider"
-            android:paddingLeft="@dimen/activity_margin"
+            android:paddingStart="@dimen/activity_margin"
             android:paddingTop="@dimen/normal_margin"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:paddingBottom="@dimen/normal_margin"/>
     </RelativeLayout>
 </ScrollView>
diff --git a/app/src/main/res/layout/dialog_select_radio_group.xml b/app/src/main/res/layout/dialog_select_radio_group.xml
index 0da0e43d9..67d4642f8 100644
--- a/app/src/main/res/layout/dialog_select_radio_group.xml
+++ b/app/src/main/res/layout/dialog_select_radio_group.xml
@@ -10,8 +10,8 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:paddingBottom="@dimen/normal_margin"
-        android:paddingLeft="@dimen/activity_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:paddingTop="@dimen/normal_margin"/>
 
 </ScrollView>
diff --git a/app/src/main/res/layout/dialog_vertical_linear_layout.xml b/app/src/main/res/layout/dialog_vertical_linear_layout.xml
index 7fc649528..3e674324f 100644
--- a/app/src/main/res/layout/dialog_vertical_linear_layout.xml
+++ b/app/src/main/res/layout/dialog_vertical_linear_layout.xml
@@ -5,6 +5,6 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    android:paddingLeft="@dimen/activity_margin"
-    android:paddingRight="@dimen/activity_margin"
+    android:paddingStart="@dimen/activity_margin"
+    android:paddingEnd="@dimen/activity_margin"
     android:paddingTop="@dimen/activity_margin"/>
diff --git a/app/src/main/res/layout/event_item_day_view.xml b/app/src/main/res/layout/event_item_day_view.xml
index a33b7c948..b145bb26e 100644
--- a/app/src/main/res/layout/event_item_day_view.xml
+++ b/app/src/main/res/layout/event_item_day_view.xml
@@ -9,7 +9,7 @@
     android:clickable="true"
     android:focusable="true"
     android:foreground="@drawable/selector"
-    android:paddingLeft="@dimen/activity_margin">
+    android:paddingStart="@dimen/activity_margin">
 
     <RelativeLayout
         android:id="@+id/event_item_holder"
@@ -24,7 +24,7 @@
             android:layout_height="match_parent"
             android:layout_alignBottom="@+id/event_item_description"
             android:layout_alignTop="@+id/event_item_title"
-            android:layout_marginRight="@dimen/small_margin"
+            android:layout_marginEnd="@dimen/small_margin"
             android:background="@drawable/event_list_color_bar"
             android:paddingBottom="@dimen/tiny_margin"
             android:paddingTop="@dimen/tiny_margin"/>
@@ -33,7 +33,7 @@
             android:id="@+id/event_item_start"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_toRightOf="@+id/event_item_color_bar"
+            android:layout_toEndOf="@+id/event_item_color_bar"
             android:textSize="@dimen/day_text_size"
             tools:text="13:00"/>
 
@@ -42,7 +42,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/event_item_start"
-            android:layout_toRightOf="@+id/event_item_color_bar"
+            android:layout_toEndOf="@+id/event_item_color_bar"
             android:text="15:00"
             android:textSize="@dimen/day_text_size"/>
 
@@ -50,11 +50,11 @@
             android:id="@+id/event_item_title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginLeft="@dimen/activity_margin"
-            android:layout_toRightOf="@+id/event_item_start"
+            android:layout_marginStart="@dimen/activity_margin"
+            android:layout_toEndOf="@+id/event_item_start"
             android:ellipsize="end"
             android:maxLines="1"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:textSize="@dimen/day_text_size"
             tools:text="Event title"/>
 
@@ -63,11 +63,11 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/event_item_title"
-            android:layout_marginLeft="@dimen/activity_margin"
-            android:layout_toRightOf="@+id/event_item_end"
+            android:layout_marginStart="@dimen/activity_margin"
+            android:layout_toEndOf="@+id/event_item_end"
             android:ellipsize="end"
             android:maxLines="1"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:textSize="@dimen/day_text_size"
             tools:text="Event description"/>
 
diff --git a/app/src/main/res/layout/event_item_day_view_simple.xml b/app/src/main/res/layout/event_item_day_view_simple.xml
index a97b0b7e3..c7f2b8bfe 100644
--- a/app/src/main/res/layout/event_item_day_view_simple.xml
+++ b/app/src/main/res/layout/event_item_day_view_simple.xml
@@ -9,14 +9,14 @@
     android:clickable="true"
     android:focusable="true"
     android:foreground="@drawable/selector"
-    android:paddingLeft="@dimen/activity_margin">
+    android:paddingStart="@dimen/activity_margin">
 
     <RelativeLayout
         android:id="@+id/event_item_holder"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:paddingBottom="@dimen/medium_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:paddingTop="@dimen/medium_margin">
 
         <ImageView
@@ -25,7 +25,7 @@
             android:layout_height="match_parent"
             android:layout_alignBottom="@+id/event_item_start"
             android:layout_alignTop="@+id/event_item_start"
-            android:layout_marginRight="@dimen/small_margin"
+            android:layout_marginEnd="@dimen/small_margin"
             android:background="@drawable/event_list_color_bar"
             android:paddingBottom="@dimen/tiny_margin"
             android:paddingTop="@dimen/tiny_margin"/>
@@ -34,7 +34,7 @@
             android:id="@+id/event_item_start"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_toRightOf="@+id/event_item_color_bar"
+            android:layout_toEndOf="@+id/event_item_color_bar"
             android:textSize="@dimen/day_text_size"
             tools:text="13:00"/>
 
@@ -42,11 +42,11 @@
             android:id="@+id/event_item_title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginLeft="@dimen/activity_margin"
-            android:layout_toRightOf="@+id/event_item_start"
+            android:layout_marginStart="@dimen/activity_margin"
+            android:layout_toEndOf="@+id/event_item_start"
             android:ellipsize="end"
             android:maxLines="1"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:textSize="@dimen/day_text_size"
             tools:text="Event title"/>
 
diff --git a/app/src/main/res/layout/event_list_item.xml b/app/src/main/res/layout/event_list_item.xml
index 61b2902c5..6db8bd62c 100644
--- a/app/src/main/res/layout/event_list_item.xml
+++ b/app/src/main/res/layout/event_list_item.xml
@@ -9,14 +9,14 @@
     android:clickable="true"
     android:focusable="true"
     android:foreground="@drawable/selector"
-    android:paddingLeft="@dimen/activity_margin">
+    android:paddingStart="@dimen/activity_margin">
 
     <RelativeLayout
         android:id="@+id/event_item_holder"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:paddingBottom="@dimen/medium_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:paddingTop="@dimen/small_margin">
 
         <ImageView
@@ -25,7 +25,7 @@
             android:layout_height="match_parent"
             android:layout_alignBottom="@+id/event_item_end"
             android:layout_alignTop="@+id/event_item_start"
-            android:layout_marginRight="@dimen/small_margin"
+            android:layout_marginEnd="@dimen/small_margin"
             android:background="@drawable/event_list_color_bar"
             android:paddingBottom="@dimen/tiny_margin"
             android:paddingTop="@dimen/tiny_margin"/>
@@ -34,7 +34,7 @@
             android:id="@+id/event_item_start"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_toRightOf="@+id/event_item_color_bar"
+            android:layout_toEndOf="@+id/event_item_color_bar"
             android:textSize="@dimen/day_text_size"
             tools:text="13:00"/>
 
@@ -43,7 +43,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/event_item_start"
-            android:layout_toRightOf="@+id/event_item_color_bar"
+            android:layout_toEndOf="@+id/event_item_color_bar"
             android:includeFontPadding="false"
             android:text="15:00"
             android:textSize="@dimen/day_text_size"/>
@@ -52,11 +52,11 @@
             android:id="@+id/event_item_title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginLeft="@dimen/activity_margin"
-            android:layout_toRightOf="@+id/event_item_start"
+            android:layout_marginStart="@dimen/activity_margin"
+            android:layout_toEndOf="@+id/event_item_start"
             android:ellipsize="end"
             android:maxLines="1"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:textSize="@dimen/day_text_size"
             tools:text="Event title"/>
 
@@ -65,12 +65,12 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/event_item_title"
-            android:layout_marginLeft="@dimen/activity_margin"
-            android:layout_toRightOf="@+id/event_item_end"
+            android:layout_marginStart="@dimen/activity_margin"
+            android:layout_toEndOf="@+id/event_item_end"
             android:ellipsize="end"
             android:includeFontPadding="false"
             android:maxLines="1"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:textSize="@dimen/day_text_size"
             tools:text="Event description"/>
 
diff --git a/app/src/main/res/layout/event_list_item_simple.xml b/app/src/main/res/layout/event_list_item_simple.xml
index e20b4eeb8..000456189 100644
--- a/app/src/main/res/layout/event_list_item_simple.xml
+++ b/app/src/main/res/layout/event_list_item_simple.xml
@@ -9,14 +9,14 @@
     android:clickable="true"
     android:focusable="true"
     android:foreground="@drawable/selector"
-    android:paddingLeft="@dimen/activity_margin">
+    android:paddingStart="@dimen/activity_margin">
 
     <RelativeLayout
         android:id="@+id/event_item_holder"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:paddingBottom="@dimen/medium_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:paddingTop="@dimen/small_margin">
 
         <ImageView
@@ -25,7 +25,7 @@
             android:layout_height="match_parent"
             android:layout_alignBottom="@+id/event_item_start"
             android:layout_alignTop="@+id/event_item_start"
-            android:layout_marginRight="@dimen/small_margin"
+            android:layout_marginEnd="@dimen/small_margin"
             android:background="@drawable/event_list_color_bar"
             android:paddingBottom="@dimen/tiny_margin"
             android:paddingTop="@dimen/tiny_margin"/>
@@ -34,7 +34,7 @@
             android:id="@+id/event_item_start"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_toRightOf="@+id/event_item_color_bar"
+            android:layout_toEndOf="@+id/event_item_color_bar"
             android:textSize="@dimen/day_text_size"
             tools:text="13:00"/>
 
@@ -42,11 +42,11 @@
             android:id="@+id/event_item_title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginLeft="@dimen/activity_margin"
-            android:layout_toRightOf="@+id/event_item_start"
+            android:layout_marginStart="@dimen/activity_margin"
+            android:layout_toEndOf="@+id/event_item_start"
             android:ellipsize="end"
             android:maxLines="1"
-            android:paddingRight="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
             android:textSize="@dimen/day_text_size"
             tools:text="Event title"/>
 
diff --git a/app/src/main/res/layout/event_list_item_widget.xml b/app/src/main/res/layout/event_list_item_widget.xml
index 013662606..715998fcf 100644
--- a/app/src/main/res/layout/event_list_item_widget.xml
+++ b/app/src/main/res/layout/event_list_item_widget.xml
@@ -13,7 +13,7 @@
         android:layout_height="match_parent"
         android:layout_alignBottom="@+id/event_item_end"
         android:layout_alignTop="@+id/event_item_start"
-        android:layout_marginRight="@dimen/small_margin"
+        android:layout_marginEnd="@dimen/small_margin"
         android:background="@drawable/event_list_color_bar"
         android:paddingBottom="@dimen/tiny_margin"
         android:paddingTop="@dimen/tiny_margin"/>
@@ -22,7 +22,7 @@
         android:id="@+id/event_item_start"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_toRightOf="@+id/event_item_color_bar"
+        android:layout_toEndOf="@+id/event_item_color_bar"
         android:text="13:00"
         android:textSize="@dimen/day_text_size"/>
 
@@ -31,7 +31,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_below="@+id/event_item_start"
-        android:layout_toRightOf="@+id/event_item_color_bar"
+        android:layout_toEndOf="@+id/event_item_color_bar"
         android:includeFontPadding="false"
         android:text="15:00"
         android:textSize="@dimen/day_text_size"/>
@@ -40,11 +40,11 @@
         android:id="@+id/event_item_title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginLeft="@dimen/normal_margin"
-        android:layout_toRightOf="@+id/event_item_start"
+        android:layout_marginStart="@dimen/normal_margin"
+        android:layout_toEndOf="@+id/event_item_start"
         android:ellipsize="end"
         android:maxLines="1"
-        android:paddingRight="@dimen/small_margin"
+        android:paddingEnd="@dimen/small_margin"
         android:textSize="@dimen/day_text_size"
         tools:text="Event title"/>
 
@@ -53,12 +53,12 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_below="@+id/event_item_title"
-        android:layout_marginLeft="@dimen/normal_margin"
-        android:layout_toRightOf="@+id/event_item_end"
+        android:layout_marginStart="@dimen/normal_margin"
+        android:layout_toEndOf="@+id/event_item_end"
         android:ellipsize="end"
         android:includeFontPadding="false"
         android:maxLines="1"
-        android:paddingRight="@dimen/small_margin"
+        android:paddingEnd="@dimen/small_margin"
         android:textSize="@dimen/day_text_size"
         tools:text="Event description"/>
 
diff --git a/app/src/main/res/layout/event_list_item_widget_simple.xml b/app/src/main/res/layout/event_list_item_widget_simple.xml
index 1dd7dc437..70fd81699 100644
--- a/app/src/main/res/layout/event_list_item_widget_simple.xml
+++ b/app/src/main/res/layout/event_list_item_widget_simple.xml
@@ -13,7 +13,7 @@
         android:layout_height="match_parent"
         android:layout_alignBottom="@+id/event_item_start"
         android:layout_alignTop="@+id/event_item_start"
-        android:layout_marginRight="@dimen/small_margin"
+        android:layout_marginEnd="@dimen/small_margin"
         android:background="@drawable/event_list_color_bar"
         android:paddingBottom="@dimen/tiny_margin"
         android:paddingTop="@dimen/tiny_margin"/>
@@ -22,7 +22,7 @@
         android:id="@+id/event_item_start"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_toRightOf="@+id/event_item_color_bar"
+        android:layout_toEndOf="@+id/event_item_color_bar"
         android:textSize="@dimen/day_text_size"
         tools:text="13:00"/>
 
@@ -30,11 +30,11 @@
         android:id="@+id/event_item_title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginLeft="@dimen/normal_margin"
-        android:layout_toRightOf="@+id/event_item_start"
+        android:layout_marginStart="@dimen/normal_margin"
+        android:layout_toEndOf="@+id/event_item_start"
         android:ellipsize="end"
         android:maxLines="1"
-        android:paddingRight="@dimen/small_margin"
+        android:paddingEnd="@dimen/small_margin"
         android:textSize="@dimen/day_text_size"
         tools:text="Event title"/>
 
diff --git a/app/src/main/res/layout/event_list_section.xml b/app/src/main/res/layout/event_list_section.xml
index 34106cde1..460fa2667 100644
--- a/app/src/main/res/layout/event_list_section.xml
+++ b/app/src/main/res/layout/event_list_section.xml
@@ -8,7 +8,7 @@
     android:drawablePadding="1dp"
     android:drawableTop="@drawable/divider_width"
     android:focusable="false"
-    android:paddingLeft="@dimen/activity_margin"
+    android:paddingStart="@dimen/activity_margin"
     android:paddingTop="@dimen/medium_margin"
     android:textSize="@dimen/normal_text_size"
     android:textStyle="bold"/>
diff --git a/app/src/main/res/layout/event_list_widget.xml b/app/src/main/res/layout/event_list_widget.xml
index 0fb1221e9..71387a632 100644
--- a/app/src/main/res/layout/event_list_widget.xml
+++ b/app/src/main/res/layout/event_list_widget.xml
@@ -10,7 +10,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:clipToPadding="false"
-        android:paddingLeft="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
         android:paddingTop="@dimen/medium_margin"/>
 
 </RelativeLayout>
diff --git a/app/src/main/res/layout/filter_event_type_view.xml b/app/src/main/res/layout/filter_event_type_view.xml
index c4c1a1c34..fa1f5de8e 100644
--- a/app/src/main/res/layout/filter_event_type_view.xml
+++ b/app/src/main/res/layout/filter_event_type_view.xml
@@ -11,10 +11,10 @@
         android:id="@+id/filter_event_type_checkbox"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginRight="@dimen/medium_margin"
-        android:layout_toLeftOf="@+id/filter_event_type_color"
+        android:layout_marginEnd="@dimen/medium_margin"
+        android:layout_toStartOf="@+id/filter_event_type_color"
         android:clickable="false"
-        android:paddingLeft="@dimen/small_margin"/>
+        android:paddingStart="@dimen/small_margin"/>
 
     <ImageView
         android:id="@+id/filter_event_type_color"
diff --git a/app/src/main/res/layout/fragment_event_list.xml b/app/src/main/res/layout/fragment_event_list.xml
index 626f20a5b..4a8e940e2 100644
--- a/app/src/main/res/layout/fragment_event_list.xml
+++ b/app/src/main/res/layout/fragment_event_list.xml
@@ -24,8 +24,8 @@
         android:layout_centerHorizontal="true"
         android:layout_marginTop="@dimen/activity_margin"
         android:gravity="center"
-        android:paddingLeft="@dimen/activity_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:text="@string/no_upcoming_events"
         android:textSize="@dimen/bigger_text_size"
         android:visibility="gone"/>
diff --git a/app/src/main/res/layout/fragment_month_widget.xml b/app/src/main/res/layout/fragment_month_widget.xml
index 4ce8b69bc..cad7ee0f0 100644
--- a/app/src/main/res/layout/fragment_month_widget.xml
+++ b/app/src/main/res/layout/fragment_month_widget.xml
@@ -14,8 +14,8 @@
         android:layout_height="match_parent"
         android:layout_alignTop="@+id/top_value"
         android:layout_alignBottom="@+id/top_value"
-        android:paddingLeft="@dimen/medium_margin"
-        android:paddingRight="@dimen/medium_margin"
+        android:paddingStart="@dimen/medium_margin"
+        android:paddingEnd="@dimen/medium_margin"
         android:src="@drawable/ic_pointer_left"/>
 
     <TextView
@@ -23,8 +23,8 @@
         style="@style/MonthStyle"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_toLeftOf="@+id/top_go_to_today"
-        android:layout_toRightOf="@+id/top_left_arrow"
+        android:layout_toStartOf="@+id/top_go_to_today"
+        android:layout_toEndOf="@+id/top_left_arrow"
         android:gravity="center"
         android:lines="1"
         android:paddingTop="@dimen/medium_margin"
@@ -39,9 +39,9 @@
         android:layout_height="match_parent"
         android:layout_alignTop="@+id/top_value"
         android:layout_alignBottom="@+id/top_value"
-        android:layout_toLeftOf="@+id/top_right_arrow"
-        android:paddingLeft="@dimen/medium_margin"
-        android:paddingRight="@dimen/medium_margin"
+        android:layout_toStartOf="@+id/top_right_arrow"
+        android:paddingStart="@dimen/medium_margin"
+        android:paddingEnd="@dimen/medium_margin"
         android:src="@drawable/ic_today"/>
 
     <ImageView
@@ -51,9 +51,9 @@
         android:layout_height="match_parent"
         android:layout_alignTop="@+id/top_value"
         android:layout_alignBottom="@+id/top_value"
-        android:layout_toLeftOf="@+id/top_new_event"
-        android:paddingLeft="@dimen/medium_margin"
-        android:paddingRight="@dimen/medium_margin"
+        android:layout_toStartOf="@+id/top_new_event"
+        android:paddingStart="@dimen/medium_margin"
+        android:paddingEnd="@dimen/medium_margin"
         android:src="@drawable/ic_pointer_right"/>
 
     <ImageView
@@ -63,9 +63,9 @@
         android:layout_height="match_parent"
         android:layout_alignTop="@+id/top_value"
         android:layout_alignBottom="@+id/top_value"
-        android:layout_alignParentRight="true"
-        android:paddingLeft="@dimen/medium_margin"
-        android:paddingRight="@dimen/medium_margin"
+        android:layout_alignParentEnd="true"
+        android:paddingStart="@dimen/medium_margin"
+        android:paddingEnd="@dimen/medium_margin"
         android:src="@drawable/ic_plus"/>
 
     <include
diff --git a/app/src/main/res/layout/fragment_week_holder.xml b/app/src/main/res/layout/fragment_week_holder.xml
index b92a2ff7b..ae4290790 100644
--- a/app/src/main/res/layout/fragment_week_holder.xml
+++ b/app/src/main/res/layout/fragment_week_holder.xml
@@ -16,7 +16,7 @@
             android:id="@+id/week_view_hours_divider"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_alignRight="@+id/week_view_hours_scrollview"
+            android:layout_alignEnd="@+id/week_view_hours_scrollview"
             android:background="@drawable/stroke_bottom_right"
             android:importantForAccessibility="no"/>
 
@@ -43,7 +43,7 @@
             android:id="@+id/week_view_view_pager"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:layout_toRightOf="@+id/week_view_hours_scrollview"/>
+            android:layout_toEndOf="@+id/week_view_hours_scrollview"/>
 
     </RelativeLayout>
 </LinearLayout>
diff --git a/app/src/main/res/layout/fragment_year.xml b/app/src/main/res/layout/fragment_year.xml
index 7601ed9ae..f5e9dc3ec 100644
--- a/app/src/main/res/layout/fragment_year.xml
+++ b/app/src/main/res/layout/fragment_year.xml
@@ -39,8 +39,8 @@
             android:id="@+id/month_2_holder"
             android:layout_width="0dp"
             android:layout_height="match_parent"
-            android:layout_marginLeft="@dimen/yearly_padding_half"
-            android:layout_marginRight="@dimen/yearly_padding_half"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
             android:layout_weight="1">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -118,8 +118,8 @@
             android:id="@+id/month_5_holder"
             android:layout_width="0dp"
             android:layout_height="match_parent"
-            android:layout_marginLeft="@dimen/yearly_padding_half"
-            android:layout_marginRight="@dimen/yearly_padding_half"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
             android:layout_weight="1">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -195,8 +195,8 @@
             android:id="@+id/month_8_holder"
             android:layout_width="0dp"
             android:layout_height="match_parent"
-            android:layout_marginLeft="@dimen/yearly_padding_half"
-            android:layout_marginRight="@dimen/yearly_padding_half"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
             android:layout_weight="1">
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -274,8 +274,8 @@
             android:id="@+id/month_11_holder"
             android:layout_width="0dp"
             android:layout_height="match_parent"
-            android:layout_marginLeft="@dimen/yearly_padding_half"
-            android:layout_marginRight="@dimen/yearly_padding_half"
+            android:layout_marginStart="@dimen/yearly_padding_half"
+            android:layout_marginEnd="@dimen/yearly_padding_half"
             android:layout_weight="1">
 
             <com.simplemobiletools.commons.views.MyTextView
diff --git a/app/src/main/res/layout/item_event_type.xml b/app/src/main/res/layout/item_event_type.xml
index a8ea05de1..dd6be586e 100644
--- a/app/src/main/res/layout/item_event_type.xml
+++ b/app/src/main/res/layout/item_event_type.xml
@@ -22,9 +22,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_centerVertical="true"
-            android:layout_toLeftOf="@+id/event_type_color"
-            android:paddingLeft="@dimen/medium_margin"
-            android:paddingRight="@dimen/medium_margin"
+            android:layout_toStartOf="@+id/event_type_color"
+            android:paddingStart="@dimen/medium_margin"
+            android:paddingEnd="@dimen/medium_margin"
             tools:text="Event type"/>
 
         <ImageView
diff --git a/app/src/main/res/layout/radio_button_with_color.xml b/app/src/main/res/layout/radio_button_with_color.xml
index 581daf2a9..b97e51aa5 100644
--- a/app/src/main/res/layout/radio_button_with_color.xml
+++ b/app/src/main/res/layout/radio_button_with_color.xml
@@ -9,8 +9,8 @@
         android:id="@+id/dialog_radio_button"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginRight="@dimen/medium_margin"
-        android:layout_toLeftOf="@+id/dialog_radio_color"
+        android:layout_marginEnd="@dimen/medium_margin"
+        android:layout_toStartOf="@+id/dialog_radio_color"
         android:clickable="false"
         android:paddingBottom="@dimen/activity_margin"
         android:paddingTop="@dimen/activity_margin"/>
diff --git a/app/src/main/res/layout/top_navigation.xml b/app/src/main/res/layout/top_navigation.xml
index a3ada46ad..9452487dc 100644
--- a/app/src/main/res/layout/top_navigation.xml
+++ b/app/src/main/res/layout/top_navigation.xml
@@ -10,8 +10,8 @@
         android:layout_height="match_parent"
         android:layout_alignBottom="@+id/top_value"
         android:layout_alignTop="@+id/top_value"
-        android:paddingLeft="@dimen/activity_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:src="@drawable/ic_pointer_left"/>
 
     <com.simplemobiletools.commons.views.MyTextView
@@ -19,8 +19,8 @@
         style="@style/MonthStyle"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_toLeftOf="@+id/top_right_arrow"
-        android:layout_toRightOf="@+id/top_left_arrow"
+        android:layout_toStartOf="@+id/top_right_arrow"
+        android:layout_toEndOf="@+id/top_left_arrow"
         android:gravity="center"
         android:paddingBottom="@dimen/normal_margin"
         android:paddingTop="@dimen/normal_margin"
@@ -32,10 +32,10 @@
         android:layout_width="wrap_content"
         android:layout_height="match_parent"
         android:layout_alignBottom="@+id/top_value"
-        android:layout_alignParentRight="true"
+        android:layout_alignParentEnd="true"
         android:layout_alignTop="@+id/top_value"
-        android:paddingLeft="@dimen/activity_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:src="@drawable/ic_pointer_right"/>
 
 </merge>
diff --git a/app/src/main/res/layout/week_event_marker.xml b/app/src/main/res/layout/week_event_marker.xml
index 7763a4c27..4e20dc2c0 100644
--- a/app/src/main/res/layout/week_event_marker.xml
+++ b/app/src/main/res/layout/week_event_marker.xml
@@ -5,7 +5,7 @@
     android:layout_height="wrap_content"
     android:ellipsize="end"
     android:maxLines="3"
-    android:paddingLeft="@dimen/tiny_margin"
-    android:paddingRight="@dimen/tiny_margin"
+    android:paddingStart="@dimen/tiny_margin"
+    android:paddingEnd="@dimen/tiny_margin"
     android:textColor="@android:color/white"
     android:textSize="@dimen/small_text_size"/>
diff --git a/app/src/main/res/layout/weekly_view_hour_textview.xml b/app/src/main/res/layout/weekly_view_hour_textview.xml
index eee8a9950..1678b5124 100644
--- a/app/src/main/res/layout/weekly_view_hour_textview.xml
+++ b/app/src/main/res/layout/weekly_view_hour_textview.xml
@@ -5,6 +5,6 @@
     android:layout_height="wrap_content"
     android:gravity="bottom|center_horizontal"
     android:minHeight="@dimen/weekly_view_row_height"
-    android:paddingLeft="@dimen/small_margin"
-    android:paddingRight="@dimen/small_margin"
+    android:paddingStart="@dimen/small_margin"
+    android:paddingEnd="@dimen/small_margin"
     android:textSize="@dimen/normal_text_size"/>
diff --git a/app/src/main/res/layout/widget_config_list.xml b/app/src/main/res/layout/widget_config_list.xml
index 0f9d6ca60..1097a2760 100644
--- a/app/src/main/res/layout/widget_config_list.xml
+++ b/app/src/main/res/layout/widget_config_list.xml
@@ -16,7 +16,7 @@
         android:layout_marginBottom="@dimen/activity_margin"
         android:clipToPadding="false"
         android:divider="@null"
-        android:paddingLeft="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
         android:paddingTop="@dimen/medium_margin"
         app:layoutManager="com.simplemobiletools.commons.views.MyLinearLayoutManager"/>
 
@@ -32,7 +32,7 @@
         android:layout_height="match_parent"
         android:layout_alignBottom="@+id/config_bg_color"
         android:layout_alignTop="@+id/config_bg_color"
-        android:layout_toRightOf="@+id/config_bg_color"
+        android:layout_toEndOf="@+id/config_bg_color"
         android:background="@android:color/white">
 
         <com.simplemobiletools.commons.views.MySeekBar
@@ -40,8 +40,8 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_centerVertical="true"
-            android:paddingLeft="@dimen/activity_margin"
-            android:paddingRight="@dimen/activity_margin"/>
+            android:paddingStart="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"/>
     </RelativeLayout>
 
     <ImageView
@@ -55,10 +55,10 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentBottom="true"
-        android:layout_alignParentRight="true"
+        android:layout_alignParentEnd="true"
         android:fontFamily="sans-serif-light"
-        android:paddingLeft="@dimen/activity_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:text="@string/ok"
         android:textColor="@android:color/white"
         android:textSize="@dimen/big_text_size"/>
diff --git a/app/src/main/res/layout/widget_config_monthly.xml b/app/src/main/res/layout/widget_config_monthly.xml
index c4acbf44a..63972705b 100644
--- a/app/src/main/res/layout/widget_config_monthly.xml
+++ b/app/src/main/res/layout/widget_config_monthly.xml
@@ -27,7 +27,7 @@
         android:layout_height="match_parent"
         android:layout_alignBottom="@+id/config_bg_color"
         android:layout_alignTop="@+id/config_bg_color"
-        android:layout_toRightOf="@+id/config_bg_color"
+        android:layout_toEndOf="@+id/config_bg_color"
         android:background="@android:color/white">
 
         <com.simplemobiletools.commons.views.MySeekBar
@@ -35,8 +35,8 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_centerVertical="true"
-            android:paddingLeft="@dimen/activity_margin"
-            android:paddingRight="@dimen/activity_margin"/>
+            android:paddingStart="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"/>
     </RelativeLayout>
 
     <ImageView
@@ -50,10 +50,10 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentBottom="true"
-        android:layout_alignParentRight="true"
+        android:layout_alignParentEnd="true"
         android:fontFamily="sans-serif-light"
-        android:paddingLeft="@dimen/activity_margin"
-        android:paddingRight="@dimen/activity_margin"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
         android:text="@string/ok"
         android:textColor="@android:color/white"
         android:textSize="@dimen/big_text_size"/>
diff --git a/app/src/main/res/layout/widget_event_list.xml b/app/src/main/res/layout/widget_event_list.xml
index d1efe9816..da22059ab 100644
--- a/app/src/main/res/layout/widget_event_list.xml
+++ b/app/src/main/res/layout/widget_event_list.xml
@@ -11,12 +11,12 @@
         android:layout_height="wrap_content"
         android:layout_alignBottom="@+id/widget_event_new_event"
         android:layout_alignTop="@+id/widget_event_new_event"
-        android:layout_toLeftOf="@+id/widget_event_new_event"
+        android:layout_toStartOf="@+id/widget_event_new_event"
         android:ellipsize="end"
         android:gravity="center_vertical"
         android:maxLines="1"
-        android:paddingLeft="@dimen/medium_margin"
-        android:paddingRight="@dimen/medium_margin"
+        android:paddingStart="@dimen/medium_margin"
+        android:paddingEnd="@dimen/medium_margin"
         android:textSize="@dimen/normal_text_size"/>
 
     <ImageView
@@ -24,11 +24,11 @@
         style="@style/ArrowStyle"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_alignParentRight="true"
+        android:layout_alignParentEnd="true"
         android:layout_alignParentTop="true"
         android:paddingBottom="@dimen/small_margin"
-        android:paddingLeft="@dimen/medium_margin"
-        android:paddingRight="@dimen/medium_margin"
+        android:paddingStart="@dimen/medium_margin"
+        android:paddingEnd="@dimen/medium_margin"
         android:paddingTop="@dimen/medium_margin"
         android:scaleType="fitCenter"
         android:src="@drawable/ic_plus"/>
@@ -41,7 +41,7 @@
         android:clipToPadding="false"
         android:divider="@null"
         android:paddingBottom="@dimen/small_margin"
-        android:paddingLeft="@dimen/medium_margin"/>
+        android:paddingStart="@dimen/medium_margin"/>
 
     <TextView
         android:id="@+id/widget_event_list_empty"
@@ -49,8 +49,8 @@
         android:layout_height="wrap_content"
         android:layout_below="@+id/widget_event_list_today"
         android:gravity="center_horizontal"
-        android:paddingLeft="@dimen/big_margin"
-        android:paddingRight="@dimen/big_margin"
+        android:paddingStart="@dimen/big_margin"
+        android:paddingEnd="@dimen/big_margin"
         android:text="@string/no_upcoming_events"
         android:textSize="@dimen/bigger_text_size"/>