How to Disable landscape mode in Android?

Question

How can I disable landscape mode for some of the views in my Android app?

Answer 1

if your activity related to the first device orientation state,get the current device orientation in the onCreate method and then fix it forever:

        int deviceRotation = ((WindowManager) getBaseContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getOrientation();

        if(deviceRotation == Surface.ROTATION_0) {
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        }
        else if(deviceRotation == Surface.ROTATION_180)
        {
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
        }
        else if(deviceRotation == Surface.ROTATION_90)
        {
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }
        else if(deviceRotation == Surface.ROTATION_270)
        {
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
        }