Start activity in landscape mode and it can rotate to portrait also

Question

I am developing an app having one activity have two different views for Landscape and Portrait mode. Everything fine on handling orientation but the problem is that I want to show Landscape mode first and then user can change orientation to portrait later whether previous activity is in Portrait mode.

when I am forcefully defining orientation to landscape in manifest or by calling in onCreate setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); then method onConfigurationChanged

@Override
    public void onConfigurationChanged(Configuration newConfig) {
        // TODO Auto-generated method stub
        super.onConfigurationChanged(newConfig);
    }

not being called.

I have also defined

android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"

in Manifest .

Any help will appreciable.

Answer 1

Try this alternative option using a OrientationEventListener in your Activity code:

private OrientationEventListener orientationEventListener;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    orientationEventListener = new OrientationEventListener(this, SensorManager.SENSOR_DELAY_NORMAL) {

        @Override
        public void onOrientationChanged(int orientation) {

            // ....

        }
    };

    if (orientationEventListener.canDetectOrientation()) {
        orientationEventListener.enable();
    }

}

@Override
protected void onDestroy() {
    super.onDestroy();
    orientationEventListener.disable();
}