原文地址：http://blog.csdn.net/yixiaoqingyuz/article/details/6453798代码如下：

ChangeOrientationHandler.java

public class ChangeOrientationHandler extends Handler {
    private Activity activity; public ChangeOrientationHandler(Activity ac) { super(); activity = ac; } @Override public void handleMessage(Message msg) { if (msg.what == 888) { int orientation = msg.arg1; if (orientation > 45 && orientation < 135) { activity.setRequestedOrientation(SCREEN_ORIENTATION_REVERSE_LANDSCAPE); // Log.d(MainActivity.TAG, "横屏翻转: "); } else if (orientation > 135 && orientation < 225) { activity.setRequestedOrientation(SCREEN_ORIENTATION_REVERSE_PORTRAIT); // Log.d(MainActivity.TAG, "竖屏翻转: "); } else if (orientation > 225 && orientation < 315) { activity.setRequestedOrientation(SCREEN_ORIENTATION_LANDSCAPE); // Log.d(MainActivity.TAG, "横屏: "); } else if ((orientation > 315 && orientation < 360) || (orientation > 0 && orientation < 45)) { activity.setRequestedOrientation(SCREEN_ORIENTATION_PORTRAIT); // Log.d(MainActivity.TAG, "竖屏: "); } } super.handleMessage(msg); } }

OrientationSensorListener.java

public class OrientationSensorListener implements SensorEventListener {
    private static final int _DATA_X = 0; private static final int _DATA_Y = 1; private static final int _DATA_Z = 2; public static final int ORIENTATION_UNKNOWN = -1; private Handler rotateHandler; public OrientationSensorListener(Handler handler) { rotateHandler = handler; } public void onAccuracyChanged(Sensor arg0, int arg1) { // TODO Auto-generated method stub } public void onSensorChanged(SensorEvent event) { float[] values = event.values; int orientation = ORIENTATION_UNKNOWN; float X = -values[_DATA_X]; float Y = -values[_DATA_Y]; float Z = -values[_DATA_Z]; float magnitude = X * X + Y * Y; // Don't trust the angle if the magnitude is small compared to the y value if (magnitude * 4 >= Z * Z) { float OneEightyOverPi = 57.29577957855f; float angle = (float) Math.atan2(-Y, X) * OneEightyOverPi; orientation = 90 - (int) Math.round(angle); // normalize to 0 - 359 range while (orientation >= 360) { orientation -= 360; } while (orientation < 0) { orientation += 360; } } if (rotateHandler != null) { rotateHandler.obtainMessage(888, orientation, 0).sendToTarget(); } } }

MainActivity.java

public class MainActivity extends AppCompatActivity {
    public static final String TAG = "MainActivity"; private Button button; private Handler handler; private OrientationSensorListener listener; private SensorManager sm; private Sensor sensor; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); handler = new ChangeOrientationHandler(this); sm = (SensorManager) getSystemService(Context.SENSOR_SERVICE); sensor = sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); listener = new OrientationSensorListener(handler); sm.registerListener(listener, sensor, SensorManager.SENSOR_DELAY_UI); button = (Button) findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { Log.d(TAG, "onClick: " + getResources().getConfiguration().orientation); } }); } @Override protected void onPause() { sm.unregisterListener(listener); super.onPause(); } @Override protected void onResume() { sm.registerListener(listener, sensor, SensorManager.SENSOR_DELAY_UI); super.onResume(); } }