Android(安卓)GestureDetector滑动监听事件

项目中需要做滑动监听事件，具体如下：

做的过程中遇到点小麻烦，写了监听后无效，具体原因及解决方法请看后面

final int RIGHT = 0;      final int LEFT = 1;      private GestureDetector gestureDetector; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_detail_news_img);gestureDetector = new GestureDetector(NewsDetailImgActivity.this,onGestureListener);  private GestureDetector.OnGestureListener onGestureListener = new GestureDetector.SimpleOnGestureListener() {@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {Log.v(TAG, "onFling...");float x = e2.getX() - e1.getX();float y = e2.getY() - e1.getY();if (x > 300) {doResult(RIGHT);} else if (x < -300) {doResult(LEFT);}return true;}};public boolean onTouchEvent(MotionEvent event) {return gestureDetector.onTouchEvent(event);}public void doResult(int action) {switch (action) {case RIGHT:Log.v(TAG, "go right");System.out.println("go right");break;case LEFT:Log.v(TAG, "go LEFT");System.out.println("go LEFT");break;}}}

今天做的时候很莫名其妙的监听滑动事件不管用了，后来找到原因是因为布局文件中用了ScrollView，与GestureDetector冲突，解决方法是重写dispatchTouchEvent方法即可：

@Overridepublic boolean dispatchTouchEvent(MotionEvent ev) {// TODOAuto-generatedmethodstubgestureDetector.onTouchEvent(ev); // 让GestureDetector响应触碰事件super.dispatchTouchEvent(ev); // 让Activity响应触碰事件return false;}

在找原因的时候发现布局文件中添加android:longClickable="true"对监听滑动事件也有影响，具体没仔细研究

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