diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/activities/SettingsActivity.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/activities/SettingsActivity.kt
index e6762d5c1..726e5df7a 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/activities/SettingsActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/activities/SettingsActivity.kt
@@ -11,6 +11,7 @@ import android.os.Parcelable
 import android.support.v4.app.ActivityCompat
 import com.simplemobiletools.calendar.R
 import com.simplemobiletools.calendar.dialogs.CustomEventReminderDialog
+import com.simplemobiletools.calendar.dialogs.SelectCalendarsDialog
 import com.simplemobiletools.calendar.dialogs.SnoozePickerDialog
 import com.simplemobiletools.calendar.extensions.*
 import com.simplemobiletools.calendar.helpers.FONT_SIZE_LARGE
@@ -29,10 +30,6 @@ class SettingsActivity : SimpleActivity() {
     lateinit var res: Resources
     private var mStoredPrimaryColor = 0
 
-    companion object {
-        val REQUEST_AUTHORIZATION = 5
-    }
-
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_settings)
@@ -115,6 +112,11 @@ class SettingsActivity : SimpleActivity() {
     private fun toggleCaldavSync() {
         settings_caldav_sync.toggle()
         config.caldavSync = settings_caldav_sync.isChecked
+        if (config.caldavSync) {
+            SelectCalendarsDialog(this) {
+
+            }
+        }
     }
 
     private fun setupSundayFirst() {
diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/CustomEventReminderDialog.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/CustomEventReminderDialog.kt
index f4913afe6..f24cbf587 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/CustomEventReminderDialog.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/CustomEventReminderDialog.kt
@@ -2,7 +2,6 @@ package com.simplemobiletools.calendar.dialogs
 
 import android.app.Activity
 import android.support.v7.app.AlertDialog
-import android.view.View
 import android.view.ViewGroup
 import android.view.WindowManager
 import com.simplemobiletools.calendar.R
@@ -13,7 +12,7 @@ import kotlinx.android.synthetic.main.dialog_custom_event_reminder.view.*
 
 class CustomEventReminderDialog(val activity: Activity, val selectedMinutes: Int = 0, val callback: (minutes: Int) -> Unit) : AlertDialog.Builder(activity) {
     var dialog: AlertDialog
-    var view: View = (activity.layoutInflater.inflate(R.layout.dialog_custom_event_reminder, null) as ViewGroup).apply {
+    var view = (activity.layoutInflater.inflate(R.layout.dialog_custom_event_reminder, null) as ViewGroup).apply {
         if (selectedMinutes == 0) {
             dialog_radio_view.check(R.id.dialog_radio_minutes)
         } else if (selectedMinutes % 1440 == 0) {
diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/RepeatRuleWeeklyDialog.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/RepeatRuleWeeklyDialog.kt
index d190d04c4..d69ce0ddb 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/RepeatRuleWeeklyDialog.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/RepeatRuleWeeklyDialog.kt
@@ -2,7 +2,6 @@ package com.simplemobiletools.calendar.dialogs
 
 import android.app.Activity
 import android.support.v7.app.AlertDialog
-import android.view.View
 import com.simplemobiletools.calendar.R
 import com.simplemobiletools.calendar.extensions.config
 import com.simplemobiletools.commons.extensions.setupDialogStuff
@@ -12,7 +11,7 @@ import kotlinx.android.synthetic.main.dialog_vertical_linear_layout.view.*
 class RepeatRuleWeeklyDialog(val activity: Activity, val curRepeatRule: Int, val callback: (repeatRule: Int) -> Unit) :
         AlertDialog.Builder(activity) {
     val dialog: AlertDialog
-    val view: View = activity.layoutInflater.inflate(R.layout.dialog_vertical_linear_layout, null)
+    val view = activity.layoutInflater.inflate(R.layout.dialog_vertical_linear_layout, null)
 
     init {
         val days = arrayOf(R.string.monday, R.string.tuesday, R.string.wednesday, R.string.thursday, R.string.friday, R.string.saturday, R.string.sunday)
diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/SelectCalendarsDialog.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/SelectCalendarsDialog.kt
new file mode 100644
index 000000000..87cf212cb
--- /dev/null
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/SelectCalendarsDialog.kt
@@ -0,0 +1,57 @@
+package com.simplemobiletools.calendar.dialogs
+
+import android.app.Activity
+import android.support.v7.app.AlertDialog
+import android.view.ViewGroup
+import com.simplemobiletools.calendar.R
+import com.simplemobiletools.calendar.extensions.getCalDAVCalendars
+import com.simplemobiletools.commons.extensions.setupDialogStuff
+import kotlinx.android.synthetic.main.calendar_item_account.view.*
+import kotlinx.android.synthetic.main.calendar_item_calendar.view.*
+import kotlinx.android.synthetic.main.dialog_select_calendars.view.*
+
+class SelectCalendarsDialog(val activity: Activity, val callback: (calendars: Int) -> Unit) : AlertDialog.Builder(activity) {
+    var prevAccount = ""
+    var dialog: AlertDialog
+    var view = (activity.layoutInflater.inflate(R.layout.dialog_select_calendars, null) as ViewGroup)
+
+    init {
+        val calendars = activity.getCalDAVCalendars()
+        val sorted = calendars.sortedWith(compareBy({ it.accountName }, { it.displayName }))
+        sorted.forEach {
+            if (prevAccount != it.accountName) {
+                prevAccount = it.accountName
+                addCalendarItem(false, it.accountName)
+            }
+
+            addCalendarItem(true, it.displayName)
+        }
+
+        dialog = AlertDialog.Builder(activity)
+                .setPositiveButton(R.string.ok, { dialogInterface, i -> confirmSelection() })
+                .setNegativeButton(R.string.cancel, null)
+                .create().apply {
+            activity.setupDialogStuff(view, this, R.string.select_caldav_calendars)
+        }
+    }
+
+    private fun addCalendarItem(isEvent: Boolean, text: String) {
+        val calendarItem = activity.layoutInflater.inflate(if (isEvent) R.layout.calendar_item_calendar else R.layout.calendar_item_account,
+                view.dialog_select_calendars_holder, false)
+
+        if (isEvent) {
+            calendarItem.calendar_item_calendar_switch.text = text
+            calendarItem.setOnClickListener {
+                calendarItem.calendar_item_calendar_switch.toggle()
+            }
+        } else {
+            calendarItem.calendar_item_account.text = text
+        }
+
+        view.dialog_select_calendars_holder.addView(calendarItem)
+    }
+
+    private fun confirmSelection() {
+
+    }
+}
diff --git a/app/src/main/res/layout/calendar_item_account.xml b/app/src/main/res/layout/calendar_item_account.xml
new file mode 100644
index 000000000..96c206a8d
--- /dev/null
+++ b/app/src/main/res/layout/calendar_item_account.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.simplemobiletools.commons.views.MyTextView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/calendar_item_account"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_marginBottom="@dimen/activity_margin"
+    android:layout_marginLeft="@dimen/big_margin"
+    android:layout_marginStart="@dimen/big_margin"
+    android:layout_marginTop="@dimen/activity_margin"
+    android:alpha="0.6"
+    android:textAllCaps="true"
+    android:textColor="@color/divider_strong"
+    android:textSize="@dimen/small_text_size"
+    tools:text="Account"/>
diff --git a/app/src/main/res/layout/calendar_item_calendar.xml b/app/src/main/res/layout/calendar_item_calendar.xml
new file mode 100644
index 000000000..4aefba01c
--- /dev/null
+++ b/app/src/main/res/layout/calendar_item_calendar.xml
@@ -0,0 +1,22 @@
+<?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/calendar_item_calendar_holder"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="?attr/selectableItemBackground">
+
+    <com.simplemobiletools.commons.views.MySwitchCompat
+        android:id="@+id/calendar_item_calendar_switch"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@null"
+        android:clickable="false"
+        android:paddingBottom="@dimen/activity_margin"
+        android:paddingLeft="@dimen/big_margin"
+        android:paddingRight="@dimen/activity_margin"
+        android:paddingTop="@dimen/activity_margin"
+        tools:text="Calendar name"/>
+
+</RelativeLayout>
diff --git a/app/src/main/res/layout/dialog_select_calendars.xml b/app/src/main/res/layout/dialog_select_calendars.xml
new file mode 100644
index 000000000..d15b701b8
--- /dev/null
+++ b/app/src/main/res/layout/dialog_select_calendars.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/dialog_select_calendars_scrollview"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <LinearLayout
+        android:id="@+id/dialog_select_calendars_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingTop="@dimen/activity_margin">
+
+    </LinearLayout>
+</ScrollView>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 2eb99ef2e..6341bcf5e 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index 2dfda7398..a18fd5a78 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 2b36d13c1..544abe3a1 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values-hi-rIN/strings.xml b/app/src/main/res/values-hi-rIN/strings.xml
index a569738c4..d78f3824b 100644
--- a/app/src/main/res/values-hi-rIN/strings.xml
+++ b/app/src/main/res/values-hi-rIN/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values-hu/strings.xml b/app/src/main/res/values-hu/strings.xml
index 1e143ce17..b7257d484 100644
--- a/app/src/main/res/values-hu/strings.xml
+++ b/app/src/main/res/values-hu/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index 169e580dd..1b1b7c2d7 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values-iw/strings.xml b/app/src/main/res/values-iw/strings.xml
index cede253c2..f1b42e7e6 100644
--- a/app/src/main/res/values-iw/strings.xml
+++ b/app/src/main/res/values-iw/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 178833d4e..e904fb4b5 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 0bbea0196..559d70712 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -195,7 +195,9 @@
     <string name="display_past_events">Pokazuj wydarzenia z przeszłości</string>
     <string name="snooze_delay">Opóźnij przypomnienie o</string>
     <string name="widgets">Widżety</string>
-    <string name="cannot_while_offline">Nie możesz tego zrobić bez dostępu do internetu.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minutę</item>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index 8a4643077..3210a09bf 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values-pt/strings.xml b/app/src/main/res/values-pt/strings.xml
index 77e66e0f0..836b640f7 100644
--- a/app/src/main/res/values-pt/strings.xml
+++ b/app/src/main/res/values-pt/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Mostrar eventos passados</string>
     <string name="snooze_delay">Adiar lembrete com a opção Snooze</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minuto</item>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index c001ad119..52d639d2b 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -204,7 +204,9 @@
     <string name="display_past_events">Показывать прошедшие события</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d минута</item>
diff --git a/app/src/main/res/values-sk/strings.xml b/app/src/main/res/values-sk/strings.xml
index 4363db67d..e3454a0ff 100644
--- a/app/src/main/res/values-sk/strings.xml
+++ b/app/src/main/res/values-sk/strings.xml
@@ -197,7 +197,9 @@
     <string name="display_past_events">Zobraziť minulé udalosti spred</string>
     <string name="snooze_delay">Posunúť pripomienku s Odložiť o</string>
     <string name="widgets">Widgety</string>
-    <string name="cannot_while_offline">Nemôžete to urobiť bez internetu.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Zvoľte kalendáre pre synchronizáciu</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minútu</item>
diff --git a/app/src/main/res/values-sv/strings.xml b/app/src/main/res/values-sv/strings.xml
index dd75ebf81..5aeeabd42 100644
--- a/app/src/main/res/values-sv/strings.xml
+++ b/app/src/main/res/values-sv/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Visa tidigare händelser</string>
     <string name="snooze_delay">Skjut upp påminnelse med Snooza</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minut</item>
diff --git a/app/src/main/res/values-tr/strings.xml b/app/src/main/res/values-tr/strings.xml
index 0844c0e97..cd5ee0976 100644
--- a/app/src/main/res/values-tr/strings.xml
+++ b/app/src/main/res/values-tr/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 95ac100fa..b53992792 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -190,7 +190,9 @@
     <string name="display_past_events">Display events from the past</string>
     <string name="snooze_delay">Postpone reminder with Snooze by</string>
     <string name="widgets">Widgets</string>
-    <string name="cannot_while_offline">You cannot do that while offline.</string>
+
+    <!-- CalDAV sync -->
+    <string name="select_caldav_calendars">Select calendars to sync</string>
 
     <plurals name="by_minutes">
         <item quantity="one">%1$d minute</item>