package com.example.y2222.myview;import android.content.Context;import android.util.AttributeSet;import android.util.Log;import android.view.GestureDetector;import android.view.MotionEvent;import android.widget.LinearLayout;/** * Created by raise.yang on 2016/06/29. */public class GestureDemoView extends LinearLayout { //1,定義GestureDetector類 private GestureDetector m_gestureDetector; public GestureDemoView(Context context, AttributeSet attrs) {  this(context, attrs, 0); } public GestureDemoView(Context context, AttributeSet attrs, int defStyleAttr) {  super(context, attrs, defStyleAttr);  //設置為可點擊  setClickable(true);  //2,初始化手勢類，同時設置手勢監聽  m_gestureDetector = new GestureDetector(context, onGestureListener);  //雙擊監聽-一般很少用到  m_gestureDetector.setOnDoubleTapListener(onDoubleTapListener); } @Override public boolean onTouchEvent(MotionEvent event) {  //3,將touch事件交給gesture處理  m_gestureDetector.onTouchEvent(event);  return super.onTouchEvent(event); } //初始化手勢監聽對象，使用GestureDetector.OnGestureListener的實現抽象類，因為實際開發中好多方法用不上 private final GestureDetector.OnGestureListener onGestureListener = new GestureDetector.SimpleOnGestureListener() {  @Override  public boolean onSingleTapUp(MotionEvent e) {   Log.d("GestureDemoView", "onSingleTapUp() ");   return super.onSingleTapUp(e);  }  @Override  public void onLongPress(MotionEvent e) {   Log.d("GestureDemoView", "onLongPress() ");   super.onLongPress(e);  }  @Override  public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {   Log.d("GestureDemoView", "onScroll() distanceX = " + distanceX);   return super.onScroll(e1, e2, distanceX, distanceY);  }  @Override  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {   Log.d("GestureDemoView", "onFling() velocityX = " + velocityX);   return super.onFling(e1, e2, velocityX, velocityY);  }  @Override  public void onShowPress(MotionEvent e) {   Log.d("GestureDemoView", "onShowPress() ");   super.onShowPress(e);  }  @Override  public boolean onDown(MotionEvent e) {   Log.d("GestureDemoView", "onDown() ");   return super.onDown(e);  }  @Override  public boolean onDoubleTap(MotionEvent e) {   Log.d("GestureDemoView", "onDoubleTap() ");   return super.onDoubleTap(e);  }  @Override  public boolean onDoubleTapEvent(MotionEvent e) {   Log.d("GestureDemoView", "onDoubleTapEvent() ");   return super.onDoubleTapEvent(e);  }  @Override  public boolean onSingleTapConfirmed(MotionEvent e) {   Log.d("GestureDemoView", "onSingleTapConfirmed() ");   return super.onSingleTapConfirmed(e);  }  @Override  public boolean onContextClick(MotionEvent e) {   Log.d("GestureDemoView", "onContextClick() ");   return super.onContextClick(e);  } }; private final GestureDetector.OnDoubleTapListener onDoubleTapListener = new GestureDetector.OnDoubleTapListener() {  @Override  public boolean onSingleTapConfirmed(MotionEvent e) {   Log.d("GestureDemoView", "onSingleTapConfirmed() OnDoubleTapListener");   return false;  }  @Override  public boolean onDoubleTap(MotionEvent e) {   Log.d("GestureDemoView", "onDoubleTap() OnDoubleTapListener");   return false;  }  @Override  public boolean onDoubleTapEvent(MotionEvent e) {   Log.d("GestureDemoView", "onDoubleTapEvent() OnDoubleTapListener");   return false;  } };}