1.實現SensorEventListener

public class OrientationListener implements SensorEventListener {
    private int mOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
    private OnOrientationChangeListener mListener;

    public OrientationListener(OnOrientationChangeListener listener) {
        mListener = listener;
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        if (Sensor.TYPE_ACCELEROMETER != event.sensor.getType()) {
            return;
        }

        float[] values = event.values;
        float x = values[0];
        float y = values[1];

        int newOrientation;
        if (x < 4.5 && x >= -4.5 && y >= 4.5) {
            newOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
        } else if (x >= 4.5 && y < 4.5 && y >= -4.5) {
            newOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
        } else if (x <= -4.5 && y < 4.5 && y >= -4.5) {
            newOrientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
        }else {
            newOrientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
        }

        if (mOrientation != newOrientation) {
            if (mListener != null) {
                mListener.orientationChanged(newOrientation);
            }
            mOrientation = newOrientation;
        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {

    }

    public interface OnOrientationChangeListener {
        void orientationChanged(int newOrientation);
    }
}

 

2.註冊Listener

private SensorManager mSensorManager;
private OrientationListener mOrientationListener;
private void init(){
	mSensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
	mOrientationListener = new OrientationListener(newOrientation -> {
	    //設定螢幕方向
	    //setRequestedOrientation(newOrientation);
	    
	});
	mSensorManager.registerListener(mOrientationListener, mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);
}
 

3.取消註冊

記得在onDestroy()中取消註冊的監聽

@Override
protected void onDestroy() {
   	super.onDestroy();
	mSensorManager.unregisterListener(mOrientationListener);
}