C# Android:如何检测单个视图的滑动手势，例如按钮、文本视图、整个活动等

Question

我正在尝试开发一个应用程序，其中将有3-4个按钮。在每个按钮上，我想要检测向右/向左/向上/向下滑动的手势。但我希望每个按钮的这些手势的功能不同。我不明白该怎么做。快来人帮帮忙。目前，我能够在整个布局/类上成功地检测到滑动手势，但无法对按钮、文本视图等特定视图执行此操作。

Answer 1

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;
}

}