Fix splash screen loading on Android

platform/android/java/app/AndroidManifest.xml

@@ -45,7 +45,7 @@
         <activity
             android:name=".GodotApp"
             android:label="@string/godot_project_name_string"
-            android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
+            android:theme="@style/GodotAppSplashTheme"
             android:launchMode="singleTask"
             android:screenOrientation="landscape"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|density|keyboard|navigation|screenLayout|uiMode"

platform/android/java/app/res/drawable/splash_drawable.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+	<item android:drawable="@drawable/splash_bg_color" />
+
+	<item>
+		<bitmap
+				android:gravity="center"
+				android:src="@drawable/splash" />
+	</item>
+
+</layer-list>

platform/android/java/app/res/values/themes.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+	<style name="GodotAppMainTheme" parent="@android:style/Theme.Black.NoTitleBar.Fullscreen"/>
+
+	<style name="GodotAppSplashTheme" parent="@style/GodotAppMainTheme">
+		<item name="android:windowBackground">@drawable/splash_drawable</item>
+	</style>
+</resources>

platform/android/java/app/src/com/godot/game/GodotApp.java

@@ -32,9 +32,17 @@ package com.godot.game;
 
 import org.godotengine.godot.FullScreenGodotApp;
 
+import android.os.Bundle;
+
 /**
  * Template activity for Godot Android custom builds.
  * Feel free to extend and modify this class for your custom logic.
  */
 public class GodotApp extends FullScreenGodotApp {
+
+	@Override
+	public void onCreate(Bundle savedInstanceState) {
+		setTheme(R.style.GodotAppMainTheme);
+		super.onCreate(savedInstanceState);
+	}
 }