Capture orientation change event before it happens

Question

It\'s simple to lock the orientation to portrait or landscape.

Answer 1

Use this piece of code in onPause() method. When rotatio changes, activty re-coustructs it self which means on-Create is called again and previous activity is finish();

    int currentOrientation = getResources().getConfiguration().orientation;
    if (currentOrientation == Configuration.ORIENTATION_LANDSCAPE){
        if (display.getRotation() == Surface.ROTATION_0)
        // play with different angles e.g ROTATION_90, ROTATION_180
    }

So when rotation changes the previous activites's onPause() will be called and at that stage you can decide what you want with new orientation.

Answer 2

1. Force the activity to stay in one mode (e.g. landscape) via setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); in onCreate(..)

2. Attach your own orientation listener,

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

           @Override
           public void onOrientationChanged(int orientation) {
               if (Math.abs(orientation - 90) < 30){
                      // your device orientation has changed, you can update UI                        accordingly, (layout won't rotate).
           }
       };
       orientationEventListener.enable();
   

Keep in mind that if you do this you will receive x & y axis of touch events 'inversed' when you discard the configuration change. Also, if you have a navigation bar, it will remain where it is and won't rotate as well!