Android OnGestureListener Fling没有检测到

概述我想在屏幕的一个屏幕中检测到运动.我正在使用以下代码. public class MyinfoActivity extends Activity implements OnGestureListener { @Override public void onCreate(Bundle savedInstanceState) { .......... . 我想在屏幕的一个屏幕中检测到运动.我正在使用以下代码.

public class MyinfoActivity extends Activity implements OnGestureListener {    @OverrIDe    public voID onCreate(Bundle savedInstanceState) {        ..........        ..........        gestureScanner = new GestureDetector(this);        resBlock = (tableRow) findVIEwByID(R.ID.ResBlock);        gestureScanner = new GestureDetector(this);    }    @OverrIDe    public boolean ontouchEvent(MotionEvent me){        Log.d(null,"touch");        if (gestureScanner.ontouchEvent(me))            return gestureScanner.ontouchEvent(me);        else            return false;    }    @OverrIDe    public boolean onFling(MotionEvent e1,MotionEvent e2,float veLocityX,float veLocityY) {        Log.d(null,"Fling");        ............        ............    }    @OverrIDe    public boolean onDown(MotionEvent arg0) {        return false;    }    @OverrIDe    public voID onLongPress(MotionEvent e) {}    @OverrIDe    public boolean onScroll(MotionEvent e1,float distanceX,float distanceY) {        return false;    }    @OverrIDe    public voID onShowPress(MotionEvent e) {}    @OverrIDe    public boolean onSingleTapUp(MotionEvent e) {        return false;    }}

它正在检测到touchEvent,但它并没有检测到任何甩动.我的代码有什么问题？

解决方法 我使用以下代码解决了这个问题.

public class MyinfoActivity extends Activity {    private GestureDetector gestureScanner;    @OverrIDe    public voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.myinfotrackerinner);        gestureScanner = new GestureDetector(this,simpleOnGestureListener);    }    @OverrIDe    public boolean ontouchEvent(MotionEvent event) {        return gestureScanner.ontouchEvent(event);    }    GestureDetector.SimpleOnGestureListener simpleOnGestureListener =                       new GestureDetector.SimpleOnGestureListener() {        @OverrIDe        public boolean onDown(MotionEvent event) {            return true;        }        @OverrIDe        public boolean onFling(MotionEvent event1,MotionEvent event2,float veLocityY) {            Log.d(null,"Fling");            int dx = (int) (event2.getX() - event1.getX());            // don't accept the fling if it's too short            // as it may conflict with a button push            if (Math.abs(dx) > MAJOR_MOVE                        && Math.abs(veLocityX) > Math.abs(veLocityY)) {                if (veLocityX > 0) {                    moveGraph("L");                } else {                    moveGraph("R");                }                return true;            } else {                return false;            }        }    };}

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