Update SDLActivity.java

Enabled immersive mode on Android devices during onCreate in the lifecycle.

projects/mtg/Android/src/org/libsdl/app/SDLActivity.java

@@ -1115,16 +1115,41 @@ public class SDLActivity extends Activity implements OnKeyListener {
     }
 
     // Setup
+	private void enterImmersiveMode() {
+		final View decorView = getWindow().getDecorView();
+		decorView.setSystemUiVisibility(
+			View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+			| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+			| View.SYSTEM_UI_FLAG_FULLSCREEN
+			| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+			| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+			| View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+		);
+	}
+	
+	@Override
+		public void onWindowFocusChanged(boolean hasFocus) {
+			super.onWindowFocusChanged(hasFocus);
+			if (hasFocus) {
+				enterImmersiveMode();
+			}
+		}
+
+	
     @Override
 	protected void onCreate(Bundle savedInstanceState) {
-        //Log.d(TAG, "onCreate()");
 		super.onCreate(savedInstanceState);
 
-        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll()
+		StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
-                                                                              .build();
 		StrictMode.setThreadPolicy(policy);
+
 		setContentView(R.layout.main);
+
+		// Enable immersive mode
+		enterImmersiveMode();
+
 		getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+
 		// So we can call stuff from static callbacks
 		mSingleton = this;
 		mContext = this.getApplicationContext();