How is application orientation (landscape or portrait) locked?

Question

I have tried to freeze orientation using:

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

Although the display stays in

Answer 1

First, don't use setRequestedOrientation() if you can avoid it. Use the android:screenOrientation attribute in your manifest element instead.

Second, you will also need android:configChanges="keyboardHidden|orientation" in your manifest element to prevent the destroy/recreate cycle.