Crash when not using default game View on Android

[obigu]

#7004 seems to have introduced a bug that crashed apps on startup that don't use default libGDX View due to the following ClassCastException.

java.lang.ClassCastException: android.widget.RelativeLayout cannot be cast to android.widget.FrameLayout
                                                                                                    	at com.badlogic.gdx.backends.android.DefaultAndroidInput.createDefaultEditText(DefaultAndroidInput.java:762)
                                                                                                    	at com.badlogic.gdx.backends.android.DefaultAndroidInput.access$100(DefaultAndroidInput.java:71)
                                                                                                    	at com.badlogic.gdx.backends.android.DefaultAndroidInput$3.run(DefaultAndroidInput.java:209)
                                                                                                    	at android.os.Handler.handleCallback(Handler.java:958)
                                                                                                    	at android.os.Handler.dispatchMessage(Handler.java:99)
                                                                                                    	at android.os.Looper.loopOnce(Looper.java:205)
                                                                                                    	at android.os.Looper.loop(Looper.java:294)
                                                                                                    	at android.app.ActivityThread.main(ActivityThread.java:8177)
                                                                                                    	at java.lang.reflect.Method.invoke(Native Method)
                                                                                                    	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
                                                                                                    	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971)

The error comes from the following libGDX snippet on DefaultAndroidInput:

private void createDefaultEditText () {
		View view = ((AndroidGraphics)app.getGraphics()).getView();
		FrameLayout frameLayout = (FrameLayout)view.getParent();

in which it assumes the view uses a FrameLayout but that may not be the case.

Can reproduce on 1.12.2-SNAPSHOT by initializing a game with custom layout such as this one that uses RelativeLayout with 2 Views or anything other than a FrameLayout:

View gameView = initializeForView(game, config);
		View bannerAdView = bannerService.setup();
		RelativeLayout layout = new RelativeLayout(this);
		layout.addView(gameView);
		layout.addView(bannerAdView);
		setContentView(layout);

Pinging @Berstanio