Android 12 support, update AndroidX libraries (#2367)

* Android 12 support, update AndroidX libraries

* fix ktlint

* add Android 12 splash screen support

* fix comments in MainActivity

* remove deprecated Intent.ACTION_CLOSE_SYSTEM_DIALOGS

* delete TimelineViewModelTest

* fix notifications on Android 12

* improve splash screen

* handle pending intent flags in a dedicated function

app/src/main/res/drawable/background_splash.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item>
-        <color android:color="@color/tusky_grey_20"/>
-    </item>
-    <item>
-        <bitmap
-            android:src="@drawable/splash"
-            android:gravity="center" />
-    </item>
-</layer-list>

app/src/main/res/drawable/ic_splash.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="240dp"
+    android:layout_width="240dp">
+
+    <item android:drawable="@drawable/ic_launcher_background" />
+
+    <item
+        android:top="40dp"
+        android:bottom="40dp"
+        android:left="40dp"
+        android:right="40dp"
+        android:drawable="@drawable/ic_launcher_foreground" />
+
+</layer-list>

app/src/main/res/values-v27/styles.xml

@@ -1,15 +1,5 @@
 <resources>
 
-    <style name="SplashTheme" parent="Theme.AppCompat.NoActionBar">
-        <item name="android:windowBackground">@drawable/background_splash</item>
-        <item name="colorPrimary">@color/tusky_grey_20</item>
-        <item name="colorPrimaryDark">@color/tusky_grey_20</item>
-        <item name="android:windowNoTitle">true</item>
-        <item name="android:windowLightNavigationBar">false</item>
-        <item name="android:navigationBarColor">@color/tusky_grey_20</item>
-        <item name="android:navigationBarDividerColor">@color/tusky_grey_25</item>
-    </style>
-
     <style name="TuskyTheme" parent="TuskyBaseTheme">
         <item name="android:windowLightNavigationBar">@bool/lightNavigationBar</item>
         <item name="android:navigationBarColor">@color/colorBackground</item>

app/src/main/res/values/colors.xml

@@ -11,6 +11,8 @@
     <color name="white">#fff</color>
     <color name="black">#000</color>
 
+    <color name="notification_color">@color/tusky_blue</color>
+
     <!-- the number roughly corresponds to the % lightness of the grey -->
     <color name="tusky_grey_05">#070b14</color>
     <color name="tusky_grey_10">#16191f</color>
@@ -24,7 +26,6 @@
     <color name="tusky_grey_90">#d9e1e8</color>
     <color name="tusky_grey_95">#ebeff4</color>
 
-
     <color name="transparent_tusky_blue">#8c2b90d9</color>
     <color name="transparent_black">#8f000000</color>
     <color name="header_background_filter_dark">#44000000</color>

app/src/main/res/values/styles.xml

@@ -30,11 +30,10 @@
         <item name="status_text_large">22sp</item>
     </style>
 
-    <style name="SplashTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
-        <item name="android:windowBackground">@drawable/background_splash</item>
-        <item name="colorPrimary">@color/tusky_grey_10</item>
-        <item name="colorPrimaryDark">@color/tusky_grey_10</item>
-        <item name="android:windowNoTitle">true</item>
+    <style name="SplashTheme" parent="Theme.SplashScreen">
+        <item name="windowSplashScreenAnimatedIcon">@drawable/ic_splash</item>
+        <item name="windowSplashScreenBackground">@color/tusky_grey_20</item>
+        <item name="postSplashScreenTheme">@style/TuskyTheme</item>
     </style>
 
     <style name="TuskyTheme" parent="TuskyBaseTheme" />