How to set screen orientation to portrait mode on Android TV App?

Question

I have an Android TV App , that needs to change its activity to portrait mode. Already set the android:screenOrientation="portrait" but no success.

Note: On the emulator it did work at Android 6 but not at Android 9.

I also tried it programatically but it was the same result: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

I also found out that there is an App ( Set Orientation App ) which can rotate the Systems Screen completely.

How can I achieve the same result on my Android TV App?

My intention is to switch the Screen orientation during runtime on specific conditions.

Answer 1

If you have root access on the tv, you can edit probs to change it to the screen orientation.