Lock screen orientation (Android)
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
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.