Listen for orientation change when screenOrientation="sensorLandscape"

Question

I am wanting to listen for an orientation change in an activity. I've attempted some of the usual things,

• onConfigurationChange with orientation in the android:configChanges element in the manifest,
• There's no restart of the activity, (proved with breakpoints), so I can't check getWindowManager().getDefaultDisplay().getRotation() after a rotation unless I check it constantly in my draw thread, which is wasteful.
• I could use OrientationEventListener but this gets called for every degree change of the phone, which (imo) is also wasteful.

I am trying to detect the difference from LandscapeLeft and LandscapeRight. I'm unsure how else to approach it at this point.

Answer 1

I don't believe the OrientationEventListener will necessarily tell you whether or not the screen's orientation has changed since it only returns the degrees.

Using getWindowManager().getDefaultDisplay().getRotation() is probably the way to go, but you would have to know the device's default orientation since this will only tell you the rotation based on the default.

There's a decent blog about using the various sensors with orientation changes and the coordinate system here.