Lock screen orientation (Android) [duplicate]

Question

I'm writing an android application that uses tabs with different contents (activities). In one of these activities, I would like to lock the screen orientation to "Landscape"-mode, but in the other activities, I want the normal orientation (according to sensor).

What I'm doing now is that I'm calling

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

when I switch to the landscape mode activity, and

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);

when I switch back to the other activities. However, this doesn't seem to work, the whole application locks up. What is the normal approach to this problem?

Answer 1

In the Manifest, you can set the screenOrientation to landscape. It would look something like this in the XML:

<activity android:name="MyActivity"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation|screenSize">
...
</activity>

Where MyActivity is the one you want to stay in landscape.

The android:configChanges=... line prevents onResume(), onPause() from being called when the screen is rotated. Without this line, the rotation will stay as you requested but the calls will still be made.

Note: keyboardHidden and orientation are required for < Android 3.2 (API level 13), and all three options are required 3.2 or above, not just orientation.