lock android screen orientation to landscape

Question

I am developing an android application whose one feature is to lock screen orientation to Landscape , I want to apply this orientation change to all the android application in p

Answer 1

Applications like the one you have linked do this by modifying the global system settings values associated with rotation. Have a look at the Settings.System class for the constants available to applications. Specifically, the ACCELEROMETER_ROTATION and USER_ROTATION values will probably be of interest.

You will also need to declare the android.permission.WRITE_SETTINGS and possibly the android.permission.WRITE_SECURE_SETTINGS permissions in your manifest.