官网地址 ttp://developer.android.com/training/gestures/detector.html：

一、可以直接覆盖Activity的onTouch方法

public class MainActivity extends Activity {...// This example shows an Activity, but you would use the same approach if// you were subclassing a View.@Overridepublic boolean onTouchEvent(MotionEvent event){             int action = MotionEventCompat.getActionMasked(event);            switch(action) {        case (MotionEvent.ACTION_DOWN) :            Log.d(DEBUG_TAG,"Action was DOWN");            return true;        case (MotionEvent.ACTION_MOVE) :            Log.d(DEBUG_TAG,"Action was MOVE");            return true;        case (MotionEvent.ACTION_UP) :            Log.d(DEBUG_TAG,"Action was UP");            return true;        case (MotionEvent.ACTION_CANCEL) :            Log.d(DEBUG_TAG,"Action was CANCEL");            return true;        case (MotionEvent.ACTION_OUTSIDE) :            Log.d(DEBUG_TAG,"Movement occurred outside bounds " +                    "of current screen element");            return true;              default :             return super.onTouchEvent(event);    }      }

二：也可以给单个的view设置监听器

View myView = findViewById(R.id.my_view); myView.setOnTouchListener(new OnTouchListener() {    public boolean onTouch(View v, MotionEvent event) {        // ... Respond to touch events               return true;    }});

三：但是 onTouch方法毕竟只能检测一些简单的手势，像滑动、双击、长按等，单用onTouch方法处理就显得棘手了，谷歌提供了方便的  GestureDetector 类来更方便的处理手势。

具体的需要实例  GestureDetectorCompat 类， 该类中的构造方法需要实现 监听器。GestureDetector.OnGestureListener 去通知用户，当各种事件（滑动、双击、长按等）发生。为了使 GestureDetector 正常监听事件，同时需要重写Activity的 nTouch方法，把事件交给Detector。具体见官网demo：

public class MainActivity extends Activity implements         GestureDetector.OnGestureListener,        GestureDetector.OnDoubleTapListener{        private static final String DEBUG_TAG = "Gestures";    private GestureDetectorCompat mDetector;     // Called when the activity is first created.     @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        // Instantiate the gesture detector with the        // application context and an implementation of        // GestureDetector.OnGestureListener        mDetector = new GestureDetectorCompat(this,this);        // Set the gesture detector as the double tap        // listener.        mDetector.setOnDoubleTapListener(this);    }    @Override     public boolean onTouchEvent(MotionEvent event){         this.mDetector.onTouchEvent(event);        // Be sure to call the superclass implementation        return super.onTouchEvent(event);    }    @Override    public boolean onDown(MotionEvent event) {         Log.d(DEBUG_TAG,"onDown: " + event.toString());         return true;    }    @Override    public boolean onFling(MotionEvent event1, MotionEvent event2,             float velocityX, float velocityY) {        Log.d(DEBUG_TAG, "onFling: " + event1.toString()+event2.toString());        return true;    }    @Override    public void onLongPress(MotionEvent event) {        Log.d(DEBUG_TAG, "onLongPress: " + event.toString());     }    @Override    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,            float distanceY) {        Log.d(DEBUG_TAG, "onScroll: " + e1.toString()+e2.toString());        return true;    }    @Override    public void onShowPress(MotionEvent event) {        Log.d(DEBUG_TAG, "onShowPress: " + event.toString());    }    @Override    public boolean onSingleTapUp(MotionEvent event) {        Log.d(DEBUG_TAG, "onSingleTapUp: " + event.toString());        return true;    }    @Override    public boolean onDoubleTap(MotionEvent event) {        Log.d(DEBUG_TAG, "onDoubleTap: " + event.toString());        return true;    }    @Override    public boolean onDoubleTapEvent(MotionEvent event) {        Log.d(DEBUG_TAG, "onDoubleTapEvent: " + event.toString());        return true;    }    @Override    public boolean onSingleTapConfirmed(MotionEvent event) {        Log.d(DEBUG_TAG, "onSingleTapConfirmed: " + event.toString());        return true;    }}