Question

How can I prevent my app form rotating. I want it so if the user is in portrait mode, the app will always be in portrait mode, and if they start the app in landscape the app will always be in lanscape (until the app is closed and started again)

Answer 1

public static void lockOrientation(Activity a) {
    if (a.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
        a.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    } else {
        a.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    }
}

public static void unlockOrientation(Activity a) {
    a.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}