Implement splash screen for cold start

app/src/main/AndroidManifest.xml

@@ -26,7 +26,7 @@
 
         <activity
             android:name=".activities.MainActivity"
-            android:theme="@style/AppTheme.NoActionBar"
+            android:theme="@style/AppTheme.SplashScreen"
             android:launchMode="singleTop">
 
             <intent-filter>

app/src/main/java/com/emanuelef/remote_capture/activities/MainActivity.java

@@ -101,6 +101,7 @@ public class MainActivity extends BaseActivity implements NavigationView.OnNavig
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        setTheme(R.style.AppTheme_NoActionBar);
         super.onCreate(savedInstanceState);
 
         initAppState();

app/src/main/res/drawable-v23/splash_screen.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:opacity="opaque">
+
+  <item android:drawable="@color/colorPrimary" />
+
+  <item
+      android:drawable="@drawable/ic_logo"
+      android:width="128dp"
+      android:height="128dp"
+      android:gravity="center"
+      tools:targetApi="m" />
+</layer-list>

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

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:opacity="opaque">
+
+  <item android:drawable="@color/colorPrimary" />
+
+  <item
+      android:drawable="@drawable/ic_logo"
+      android:gravity="center"
+      tools:targetApi="m" />
+</layer-list>

app/src/main/res/layout/main_screen.xml

@@ -4,6 +4,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     tools:context=".activities.MainActivity"
+    android:background="@android:color/transparent"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 

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

@@ -14,6 +14,10 @@
         <item name="windowNoTitle">true</item>
     </style>
 
+    <style name="AppTheme.SplashScreen" parent="AppTheme.NoActionBar">
+        <item name="android:windowBackground">@drawable/splash_screen</item>
+    </style>
+
     <style name="AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
 
     <style name="PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />