android–GestureDetectorCompact不工作？

概述我的代码publicclassTestActivityextendsAppCompatActivityimplementsGestureDetector.OnGestureListener,GestureDetector.OnDoubleTapListener{@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceStat

我的代码

 public class TestActivity extends AppCompatActivity implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener {    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_test);        GestureDetectorCompat gestureDetectorCompat=new GestureDetectorCompat(this,this);        gestureDetectorCompat.setonDoubleTapListener(this);    }    @OverrIDe    public boolean onDown(MotionEvent e) {        return false;    }    @OverrIDe    public voID onShowPress(MotionEvent e) {    }    @OverrIDe    public boolean onSingleTapUp(MotionEvent e) {        return false;    }    @OverrIDe    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {        return false;    }    @OverrIDe    public voID onLongPress(MotionEvent e) {    }    @OverrIDe    public boolean onFling(MotionEvent e1, MotionEvent e2, float veLocityX, float veLocityY) {        return false;    }    @OverrIDe    public boolean onSingleTapConfirmed(MotionEvent e) {        return false;    }    @OverrIDe    public boolean onDoubleTap(MotionEvent e) {        return false;    }    @OverrIDe    public boolean onDoubleTapEvent(MotionEvent e) {        return false;    }}

我正在调试每个方法,但没有一个被调用.
哪里我错了？

解决方法:

不会自动调用GestureDetectorCompat.您必须在Activity中覆盖ontouchEvent(MotionEvent事件),并将事件传递给手势检测器.例如.

public boolean ontouchEvent(MotionEvent event) {    return gestureDetectorCompat.ontouchEvent(event);}

您可以找到文档here.请参阅它,了解返回值的含义.

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