Android - 'sensorPortrait' orientation not working

Question

I have come across a problem where the orientation sensorPortrait does not work, i have tried enabling both through the manifest and within the activity itself with

Answer 1

As a work around i have created a SensorPortraitActivity:

public class SensorPortraitActivity extends AppCompatActivity {

    private static final int PORTRAIT = 0;
    private static final int REVERSE_PORTRAIT = 180;
    private static final int OFFSET = 45;
    private static final int UNKNOWN = -1;

//  account for 0 = 360 (eg. -1 = 359)
    private static final int PORTRAIT_START = PORTRAIT - OFFSET + 360; 
    private static final int PORTRAIT_END = PORTRAIT + OFFSET;
    private static final int REVERSE_PORTRAIT_START = REVERSE_PORTRAIT - OFFSET;
    private static final int REVERSE_PORTRAIT_END = REVERSE_PORTRAIT + OFFSET;

    private OrientationChangeListener mListener;
    private OrientationEventListener mOrientationListener;
    private CurrentOrientation mCurrentOrientation;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mOrientationListener = new OrientationEventListener(this) {
            @Override
            public void onOrientationChanged(int i) {
                orientationChanged(i);
            }
        };
    }

    @Override
    protected void onResume() {
        super.onResume();
        mOrientationListener.enable();
    }

    @Override
    protected void onPause() {
        super.onPause();
        mOrientationListener.disable();
    }

    //optional 
    public void setOrientationChangeListener(OrientationChangeListener listener){
        mListener = listener;
    }

    private void orientationChanged(int degrees) {

        if (degrees != UNKNOWN){

            if (degrees >= PORTRAIT_START || degrees <= PORTRAIT_END){

                if (mCurrentOrientation != CurrentOrientation.PORTRAIT){

                    mCurrentOrientation = CurrentOrientation.PORTRAIT;
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

                if (mListener != null){
                    mListener.onPortrait();
                }
            }
        } else if (degrees >= REVERSE_PORTRAIT_START && degrees <= REVERSE_PORTRAIT_END){

            if (mCurrentOrientation != CurrentOrientation.REVERSE_PORTRAIT){

                mCurrentOrientation = CurrentOrientation.REVERSE_PORTRAIT;
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);

                    if (mListener != null) {
                        mListener.onReversePortrait();
                    }
                }
            }
        }
    }

    interface OrientationChangeListener {
        void onPortrait();
        void onReversePortrait();
    }

    enum CurrentOrientation {
        PORTRAIT, REVERSE_PORTRAIT
    }
}

Although it does seem like overkill for something as simple as this.

To use it simple extend SensorPortraitActivity

public class ExampleActivity extends SensorPortraitActivity implements SensorPortraitView.OrientationChangeListener {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //set listener if you want callbacks
        super.setOrientationChangeListener(this);
    }

    @Override
    public void onPortrait() {
        //portrait orientation
    }

    @Override
    public void onReversePortrait() {
        //reverse portrait orientation
    }
}