Android Device onConfigurationChanged event does not handling orientation

Question

i have an activity and on startup of the activity i need to change the orientation in lanscape and then later on i want to handle both orientation changes as user rotates de

Answer 1

On this statement

if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT)
    {
        Toast.makeText(this, "portrait", Toast.LENGTH_LONG).show();
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    }
    if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE)
    {
        Toast.makeText(this, "landscape", Toast.LENGTH_LONG).show();
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    } 

also in onCreate(Bundle bundle);

You called

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

or

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

It means that your activity is in landscape/portrait orientation and never rotate again

removing it will trigger the onConfigurationChanged(Configuration) again