diff --git a/app/src/main/res/layout/activity_event.xml b/app/src/main/res/layout/activity_event.xml
index 724f7ea1a..45cb4eca6 100644
--- a/app/src/main/res/layout/activity_event.xml
+++ b/app/src/main/res/layout/activity_event.xml
@@ -2,6 +2,7 @@
 <ScrollView
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/event_scrollview"
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
@@ -98,7 +99,7 @@
             android:paddingEnd="@dimen/activity_margin"
             android:paddingRight="@dimen/activity_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:text="January 1 1970"
+            tools:text="January 1 1970"
             android:textSize="@dimen/day_text_size"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -110,7 +111,7 @@
             android:layout_below="@+id/event_time_image"
             android:background="?attr/selectableItemBackground"
             android:padding="@dimen/activity_margin"
-            android:text="00:00"
+            tools:text="00:00"
             android:textSize="@dimen/day_text_size"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -125,7 +126,7 @@
             android:paddingEnd="@dimen/activity_margin"
             android:paddingRight="@dimen/activity_margin"
             android:paddingTop="@dimen/activity_margin"
-            android:text="January 1 1970"
+            tools:text="January 1 1970"
             android:textSize="@dimen/day_text_size"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -137,7 +138,7 @@
             android:layout_below="@+id/event_start_time"
             android:background="?attr/selectableItemBackground"
             android:padding="@dimen/activity_margin"
-            android:text="00:00"
+            tools:text="00:00"
             android:textSize="@dimen/day_text_size"/>
 
         <ImageView
diff --git a/app/src/main/res/layout/dialog_repeat_limit_type_picker.xml b/app/src/main/res/layout/dialog_repeat_limit_type_picker.xml
index 27ab8bef3..c97437f87 100644
--- a/app/src/main/res/layout/dialog_repeat_limit_type_picker.xml
+++ b/app/src/main/res/layout/dialog_repeat_limit_type_picker.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <ScrollView
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/dialog_repeat_type_picker_holder"
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
@@ -25,7 +26,7 @@
             android:layout_marginStart="@dimen/repeat_type_margin_start"
             android:paddingBottom="@dimen/normal_margin"
             android:paddingTop="@dimen/medium_margin"
-            android:text="January 1 1970"/>
+            tools:text="January 1 1970"/>
 
         <com.simplemobiletools.commons.views.MyCompatRadioButton
             android:id="@+id/repeat_type_x_times"
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 20d84b455..b5fc3b587 100644
--- a/app/src/main/res/layout/event_item_day_view.xml
+++ b/app/src/main/res/layout/event_item_day_view.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/event_item_frame"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
@@ -18,7 +19,7 @@
             android:id="@+id/event_item_start"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="13:00"
+            tools:text="13:00"
             android:textSize="@dimen/day_text_size"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -26,7 +27,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/event_item_start"
-            android:text="15:00"
+            tools:text="15:00"
             android:textSize="@dimen/day_text_size"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -38,7 +39,7 @@
             android:ellipsize="end"
             android:maxLines="1"
             android:paddingRight="@dimen/activity_margin"
-            android:text="Event title"
+            tools:text="Event title"
             android:textSize="@dimen/day_text_size"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -52,7 +53,7 @@
             android:ellipsize="end"
             android:maxLines="1"
             android:paddingRight="@dimen/activity_margin"
-            android:text="Event description"
+            tools:text="Event description"
             android:textSize="@dimen/day_text_size"/>
 
     </RelativeLayout>
diff --git a/app/src/main/res/layout/event_list_item.xml b/app/src/main/res/layout/event_list_item.xml
index 48553dcb9..10833be4a 100644
--- a/app/src/main/res/layout/event_list_item.xml
+++ b/app/src/main/res/layout/event_list_item.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/event_item_frame"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
@@ -21,7 +22,7 @@
             android:id="@+id/event_item_start"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="13:00"
+            tools:text="13:00"
             android:textSize="@dimen/day_text_size"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -29,7 +30,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/event_item_start"
-            android:text="15:00"
+            tools:text="15:00"
             android:textSize="@dimen/day_text_size"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -40,7 +41,7 @@
             android:layout_toRightOf="@+id/event_item_start"
             android:ellipsize="end"
             android:maxLines="1"
-            android:text="Event title"
+            tools:text="Event title"
             android:textSize="@dimen/day_text_size"/>
 
         <com.simplemobiletools.commons.views.MyTextView
@@ -53,7 +54,7 @@
             android:alpha=".4"
             android:ellipsize="end"
             android:maxLines="1"
-            android:text="Event description"
+            tools:text="Event description"
             android:textSize="@dimen/day_text_size"/>
 
     </RelativeLayout>
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 a6006ad83..902946942 100644
--- a/app/src/main/res/layout/event_list_item_widget.xml
+++ b/app/src/main/res/layout/event_list_item_widget.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/event_item_holder"
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
@@ -10,7 +11,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginLeft="@dimen/activity_margin"
-        android:text="13:00"
+        tools:text="13:00"
         android:textSize="@dimen/day_text_size"/>
 
     <TextView
@@ -19,7 +20,7 @@
         android:layout_height="wrap_content"
         android:layout_below="@+id/event_item_start"
         android:layout_marginLeft="@dimen/activity_margin"
-        android:text="15:00"
+        tools:text="15:00"
         android:textSize="@dimen/day_text_size"/>
 
     <TextView
@@ -31,7 +32,7 @@
         android:ellipsize="end"
         android:maxLines="1"
         android:paddingRight="@dimen/activity_margin"
-        android:text="Event title"
+        tools:text="Event title"
         android:textSize="@dimen/day_text_size"/>
 
     <TextView
@@ -45,7 +46,7 @@
         android:ellipsize="end"
         android:maxLines="1"
         android:paddingRight="@dimen/activity_margin"
-        android:text="Event description"
+        tools:text="Event description"
         android:textSize="@dimen/day_text_size"/>
 
 </RelativeLayout>
diff --git a/app/src/main/res/layout/first_row.xml b/app/src/main/res/layout/first_row.xml
index 1d7df5438..cbd21754a 100644
--- a/app/src/main/res/layout/first_row.xml
+++ b/app/src/main/res/layout/first_row.xml
@@ -3,6 +3,7 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_weight="1"
     android:orientation="horizontal">
 
@@ -12,8 +13,9 @@
         android:layout_width="0dp"
         android:layout_height="match_parent"
         android:layout_weight="1"
-        android:text="#"
-        android:visibility="gone"/>
+        tools:text="#"
+        android:visibility="gone"
+        tools:visibility="visible"/>
 
     <com.simplemobiletools.commons.views.MyTextView
         android:id="@+id/label_0"
diff --git a/app/src/main/res/layout/first_row_widget.xml b/app/src/main/res/layout/first_row_widget.xml
index 6b05210ec..ddbf2b837 100644
--- a/app/src/main/res/layout/first_row_widget.xml
+++ b/app/src/main/res/layout/first_row_widget.xml
@@ -3,6 +3,7 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_weight="1"
     android:orientation="horizontal">
 
@@ -12,8 +13,9 @@
         android:layout_width="0dp"
         android:layout_height="match_parent"
         android:layout_weight="1"
-        android:text="#"
-        android:visibility="gone"/>
+        tools:text="#"
+        android:visibility="gone"
+        tools:visibility="visible"/>
 
     <TextView
         android:id="@+id/label_0"