/**
 * 橫向的LinearLayout，就是整個swipemenu的父布局
 * 主要定義了添加Item的方法及Item的屬性設(shè)置
 * @author baoyz
 * @date 2014-8-23
 *
 */
public class SwipeMenuView extends LinearLayout implements OnClickListener {
 
  private SwipeMenuListView mListView;
  private SwipeMenuLayout mLayout;
  private SwipeMenu mMenu;
  private OnSwipeItemClickListener onItemClickListener;
  private int position;
 
  public int getPosition() {
    return position;
  }
 
  public void setPosition(int position) {
    this.position = position;
  }
 
  public SwipeMenuView(SwipeMenu menu, SwipeMenuListView listView) {
    super(menu.getContext());
    mListView = listView;
    mMenu = menu; //
    // MenuItem的list集合
    List<SwipeMenuItem> items = menu.getMenuItems();
    int id = 0;
    //通過item構(gòu)造出View添加到SwipeMenuView中
    for (SwipeMenuItem item : items) {
      addItem(item, id++);
    }
  }
  /**
   * 將 MenuItem 轉(zhuǎn)換成 UI控件,一個item就相當(dāng)于一個垂直的LinearLayout，
   * SwipeMenuView就是橫向的LinearLayout，
   */
  private void addItem(SwipeMenuItem item, int id) {
    //布局參數(shù)
    LayoutParams params = new LayoutParams(item.getWidth(),
        LayoutParams.MATCH_PARENT);
 
    LinearLayout parent = new LinearLayout(getContext());
    //設(shè)置menuitem的id，用于后邊的點擊事件區(qū)分item用的
    parent.setId(id);
    parent.setGravity(Gravity.CENTER);
    parent.setOrientation(LinearLayout.VERTICAL);
    parent.setLayoutParams(params);
    parent.setBackgroundDrawable(item.getBackground());
    //設(shè)置監(jiān)聽器
    parent.setOnClickListener(this);
    addView(parent); //加入到SwipeMenuView中，橫向的
 
    if (item.getIcon() != null) {
      parent.addView(createIcon(item));
    }
    if (!TextUtils.isEmpty(item.getTitle())) {
      parent.addView(createTitle(item));
    }
  }
  //創(chuàng)建img
  private ImageView createIcon(SwipeMenuItem item) {
    ImageView iv = new ImageView(getContext());
    iv.setImageDrawable(item.getIcon());
    return iv;
  }
  /*根據(jù)參數(shù)創(chuàng)建title
   */
  private TextView createTitle(SwipeMenuItem item) {
    TextView tv = new TextView(getContext());
    tv.setText(item.getTitle());
    tv.setGravity(Gravity.CENTER);
    tv.setTextSize(item.getTitleSize());
    tv.setTextColor(item.getTitleColor());
    return tv;
  }
 
  @Override
  /**
   * 用傳來的mLayout判斷是否打開
   * 調(diào)用onItemClick點擊事件
   */
  public void onClick(View v) {
    if (onItemClickListener != null && mLayout.isOpen()) {
      onItemClickListener.onItemClick(this, mMenu, v.getId());
    }
  }
 
  public OnSwipeItemClickListener getOnSwipeItemClickListener() {
    return onItemClickListener;
  }
 
  /**
   * 設(shè)置item的點擊事件
   * @param onItemClickListener
   */
  public void setOnSwipeItemClickListener(OnSwipeItemClickListener onItemClickListener) {
    this.onItemClickListener = onItemClickListener;
  }
 
  public void setLayout(SwipeMenuLayout mLayout) {
    this.mLayout = mLayout;
  }
 
  /**
   * 點擊事件的回調(diào)接口
   */
  public static interface OnSwipeItemClickListener {
    /**
     * onClick點擊事件中調(diào)用onItemClick
     * @param view 父布局
     * @param menu menu實體類
     * @param index menuItem的id
     */
    void onItemClick(SwipeMenuView view, SwipeMenu menu, int index);
  }
}

public class SwipeMenuLayout extends FrameLayout {
 
  private static final int CONTENT_VIEW_ID = 1;
  private static final int MENU_VIEW_ID = 2;
 
  private static final int STATE_CLOSE = 0;
  private static final int STATE_OPEN = 1;
  //方向
  private int mSwipeDirection;
  private View mContentView;
  private SwipeMenuView mMenuView;
  。。。。。
  public SwipeMenuLayout(View contentView, SwipeMenuView menuView) {
    this(contentView, menuView, null, null);
  }
 
  public SwipeMenuLayout(View contentView, SwipeMenuView menuView,
      Interpolator closeInterpolator, Interpolator openInterpolator) {
    super(contentView.getContext());
    mCloseInterpolator = closeInterpolator;
    mOpenInterpolator = openInterpolator;
    mContentView = contentView;
    mMenuView = menuView;
    //將SwipeMenuLayout設(shè)置給SwipeMenuView，用于判斷是否打開
    mMenuView.setLayout(this);
    init();
  }
  private void init() {
    setLayoutParams(new AbsListView.LayoutParams(LayoutParams.MATCH_PARENT,
        LayoutParams.WRAP_CONTENT));
 
    mGestureListener = new SimpleOnGestureListener() {
      @Override
      public boolean onDown(MotionEvent e) {
        isFling = false;
        return true;
      }
 
      @Override
      //velocityX這個參數(shù)是x軸方向的速率，向左是負(fù)的，向右是正的
      public boolean onFling(MotionEvent e1, MotionEvent e2,
          float velocityX, float velocityY) {
        // TODO
        if (Math.abs(e1.getX() - e2.getX()) > MIN_FLING
            && velocityX < MAX_VELOCITYX) {
          isFling = true;
        }
        Log.i("tag","isFling="+isFling+" e1.getX()="+e1.getX()+" e2.getX()="+e2.getX()+
            " velocityX="+velocityX+" MAX_VELOCITYX="+MAX_VELOCITYX);
        // Log.i("byz", MAX_VELOCITYX + ", velocityX = " + velocityX);
        return super.onFling(e1, e2, velocityX, velocityY);
      }
    };
    mGestureDetector = new GestureDetectorCompat(getContext(),
        mGestureListener);
 
    。。。。
 
    LayoutParams contentParams = new LayoutParams(
        LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
    mContentView.setLayoutParams(contentParams);
    if (mContentView.getId() < 1) {
      //noinspection ResourceType
      mContentView.setId(CONTENT_VIEW_ID);
    }
    //noinspection ResourceType
    mMenuView.setId(MENU_VIEW_ID);
    mMenuView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
        LayoutParams.WRAP_CONTENT));
 
    addView(mContentView);
    addView(mMenuView);
 
  }

/**
   * 滑動事件，用于外邊調(diào)用的接口
   * 這是一個對外暴露的API，而調(diào)用這個API的是SwipeMenuListView，那么MotionEvent是SwipeMenuListView的MotionEvent
   * @param event
   * @return
   */
  public boolean onSwipe(MotionEvent event) {
    mGestureDetector.onTouchEvent(event);
    switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN:
      mDownX = (int) event.getX();//記下點擊的x坐標(biāo)
      isFling = false;
      break;
    case MotionEvent.ACTION_MOVE:
      // Log.i("byz", "downX = " + mDownX + ", moveX = " + event.getX());
      int dis = (int) (mDownX - event.getX());
      if (state == STATE_OPEN) {//當(dāng)狀態(tài)是open時，dis就是0
        Log.i("tag", "dis = " + dis);//這個值一直是0
        //DIRECTION_LEFT = 1 || DIRECTION_RIGHT = -1
        dis += mMenuView.getWidth()*mSwipeDirection;//mSwipeDirection=1
        Log.i("tag", "dis = " + dis + ", mSwipeDirection = " + mSwipeDirection);
      }
      Log.i("tag", "ACTION_MOVE downX = " + mDownX + ", moveX = " + event.getX()+", dis="+dis);
      swipe(dis);
      break;
    case MotionEvent.ACTION_UP:
      //判斷滑動距離，是打開還是關(guān)閉
      //在這里，如果已經(jīng)有一個item打開了，此時滑動另外的一個item，還是執(zhí)行這個方法，怎么改進(jìn)？
      if ((isFling || Math.abs(mDownX - event.getX()) > (mMenuView.getWidth() / 2)) &&
          Math.signum(mDownX - event.getX()) == mSwipeDirection) {
        Log.i("tag", "ACTION_UP downX = " + mDownX + ", moveX = " + event.getX());
        // open
        smoothOpenMenu();
      } else {
        // close
        smoothCloseMenu();
        return false;
      }
      break;
    }
    return true;
  }
 
  public boolean isOpen() {
    return state == STATE_OPEN;
  }
  /**
   * 滑動dis的距離，把mContentView和mMenuView都滑動dis距離
   * @param dis
   */
  private void swipe(int dis) {
    if(!mSwipEnable){
      return ;
    }
    //left is positive;right is negative
    if (Math.signum(dis) != mSwipeDirection) {//left=1;right =-1
      dis = 0; //不滑動
    } else if (Math.abs(dis) > mMenuView.getWidth()) {//大于它的寬度，dis就是mMenuView.getWidth()
      dis = mMenuView.getWidth()*mSwipeDirection;
    }
    //重新設(shè)置布局，不斷左移(或者右移)，
    mContentView.layout(-dis, mContentView.getTop(),
        mContentView.getWidth() -dis, getMeasuredHeight());
 
    if (mSwipeDirection == SwipeMenuListView.DIRECTION_LEFT) {//1
      //同上重新設(shè)置menuview的布局，畫圖很清晰
      mMenuView.layout(mContentView.getWidth() - dis, mMenuView.getTop(),
          mContentView.getWidth() + mMenuView.getWidth() - dis,
          mMenuView.getBottom());
    } else {
      mMenuView.layout(-mMenuView.getWidth() - dis, mMenuView.getTop(),
          - dis, mMenuView.getBottom());
    }
  }
  /**
   * 更新狀態(tài)state = STATE_CLOSE;
   * 關(guān)閉menu
   */
  public void smoothCloseMenu() {
    state = STATE_CLOSE;
    if (mSwipeDirection == SwipeMenuListView.DIRECTION_LEFT) {
      mBaseX = -mContentView.getLeft();
      //滑動mMenuView.getWidth()的距離，正好隱藏掉
      mCloseScroller.startScroll(0, 0, mMenuView.getWidth(), 0, 350);
    } else {
      mBaseX = mMenuView.getRight();
      mCloseScroller.startScroll(0, 0, mMenuView.getWidth(), 0, 350);
    }
    postInvalidate();
  }
 
  public void smoothOpenMenu() {
    if(!mSwipEnable){
      return ;
    }
    state = STATE_OPEN;
    if (mSwipeDirection == SwipeMenuListView.DIRECTION_LEFT) {
      mOpenScroller.startScroll(-mContentView.getLeft(), 0, mMenuView.getWidth(), 0, 350);
      Log.i("tag","mContentView.getLeft()="+mContentView.getLeft()+", mMenuView="+mMenuView.getWidth());//-451,就是移動的距離dis，-（downX-moveX）
      //mContentView.getLeft()=-540, mMenuView=540 ,這倆的絕對值是相等的，完全正確！哈哈·
    } else {
      mOpenScroller.startScroll(mContentView.getLeft(), 0, mMenuView.getWidth(), 0, 350);
    }
    //在非ui thread中調(diào)用這個方法，使視圖重繪
    postInvalidate();
  }
  。。。
}

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    //寬度是無限擴(kuò)展的，高度是指定的
    mMenuView.measure(MeasureSpec.makeMeasureSpec(0,
        MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec(
        getMeasuredHeight(), MeasureSpec.EXACTLY));
  }
  protected void onLayout(boolean changed, int l, int t, int r, int b) {
    mContentView.layout(0, 0, getMeasuredWidth(),
        mContentView.getMeasuredHeight());
    if (mSwipeDirection == SwipeMenuListView.DIRECTION_LEFT) {//左滑
      //相對于父view，以左邊和上邊為基準(zhǔn)，隱藏在右邊
      mMenuView.layout(getMeasuredWidth(), 0,
          getMeasuredWidth() + mMenuView.getMeasuredWidth(),
          mContentView.getMeasuredHeight());
    } else {  //右滑，隱藏在左邊
      mMenuView.layout(-mMenuView.getMeasuredWidth(), 0,
          0, mContentView.getMeasuredHeight());
    }
  }

public class SwipeMenuAdapter implements WrapperListAdapter,
    OnSwipeItemClickListener {
 
  private ListAdapter mAdapter;
  private Context mContext;
  private SwipeMenuListView.OnMenuItemClickListener onMenuItemClickListener;
 
  public SwipeMenuAdapter(Context context, ListAdapter adapter) {
    mAdapter = adapter;
    mContext = context;
  }
  。。。。
  /**
   * 添加滑動時的顯示的菜單
   * 在這里可以看出每一個Item都是一個SwipeMenuLayout
   */
  public View getView(int position, View convertView, ViewGroup parent) {
    SwipeMenuLayout layout = null;
    if (convertView == null) {
      View contentView = mAdapter.getView(position, convertView, parent);//item的view
      SwipeMenu menu = new SwipeMenu(mContext); //創(chuàng)建SwipeMenu
      menu.setViewType(getItemViewType(position));
      createMenu(menu); //測試的，可以先不管
      SwipeMenuView menuView = new SwipeMenuView(menu,
          (SwipeMenuListView) parent);
      menuView.setOnSwipeItemClickListener(this);
      SwipeMenuListView listView = (SwipeMenuListView) parent;
      layout = new SwipeMenuLayout(contentView, menuView,
          listView.getCloseInterpolator(),
          listView.getOpenInterpolator());
      layout.setPosition(position);
    } else {
      layout = (SwipeMenuLayout) convertView;
      layout.closeMenu();
      layout.setPosition(position);
      View view = mAdapter.getView(position, layout.getContentView(),
          parent);
    }
    if (mAdapter instanceof BaseSwipListAdapter) {
      boolean swipEnable = (((BaseSwipListAdapter) mAdapter).getSwipEnableByPosition(position));
      layout.setSwipEnable(swipEnable);
    }
    return layout;
  }
  //這個方法在創(chuàng)建時，重寫啦，在這里是測試的，可以不管。
  public void createMenu(SwipeMenu menu) {
    // Test Code
   。。。。。。
  }
  /**
   * OnSwipeItemClickListener的回掉方法
   * 這個方法在該類創(chuàng)建時，重寫啦。
   */
  public void onItemClick(SwipeMenuView view, SwipeMenu menu, int index) {
    if (onMenuItemClickListener != null) {
      onMenuItemClickListener.onMenuItemClick(view.getPosition(), menu,
          index);
    }
  }
  。。。。//省略了不重要的
}

public class SwipeMenuListView extends ListView {
 
  private static final int TOUCH_STATE_NONE = 0;
  private static final int TOUCH_STATE_X = 1;
  private static final int TOUCH_STATE_Y = 2;
 
  public static final int DIRECTION_LEFT = 1; //方向
  public static final int DIRECTION_RIGHT = -1;
  private int mDirection = 1;//swipe from right to left by default
 
  private int MAX_Y = 5;
  private int MAX_X = 3;
  private float mDownX;
  private float mDownY;
  private int mTouchState;
  private int mTouchPosition;
 
  private SwipeMenuLayout mTouchView;
  private OnSwipeListener mOnSwipeListener;
  //創(chuàng)建menuItem的
  private SwipeMenuCreator mMenuCreator;
  //menuItem的item點擊事件
  private OnMenuItemClickListener mOnMenuItemClickListener;
  private OnMenuStateChangeListener mOnMenuStateChangeListener;
  private Interpolator mCloseInterpolator; //動畫變化率
  private Interpolator mOpenInterpolator;
 
  //----added in myself--下面這兩行是我自己加的，
  //你如果下下來代碼demo運行下你會發(fā)現(xiàn)，當(dāng)一個item已經(jīng)滑開時，滑動另外的item，此時原來打開的item沒有關(guān)閉，可以看下QQ的側(cè)滑，它是關(guān)閉的，我這里就稍微修改了下。
  private int mOldTouchPosition = -1;
  private boolean shouldCloseMenu;
  //--------
 
  public SwipeMenuListView(Context context) {
    super(context);
    init();
  }
 
  public SwipeMenuListView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init();
  }
 
  public SwipeMenuListView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
  }
  //初始化變量
  private void init() {
    MAX_X = dp2px(MAX_X);
    MAX_Y = dp2px(MAX_Y);
    mTouchState = TOUCH_STATE_NONE;
  }
 
  @Override
  /**
   * 對參數(shù)adapter進(jìn)行了一次包裝，包裝成SwipeMenuAdapter
   */
  public void setAdapter(ListAdapter adapter) {
    super.setAdapter(new SwipeMenuAdapter(getContext(), adapter) {
      @Override
      public void createMenu(SwipeMenu menu) {
        if (mMenuCreator != null) {
          mMenuCreator.create(menu);
        }
      }
 
      @Override
      public void onItemClick(SwipeMenuView view, SwipeMenu menu,
                  int index) {
        boolean flag = false;
        if (mOnMenuItemClickListener != null) {
          flag = mOnMenuItemClickListener.onMenuItemClick(
              view.getPosition(), menu, index);
        }
        //再次點擊list中的item關(guān)閉menu
        if (mTouchView != null && !flag) {
          mTouchView.smoothCloseMenu();
        }
      }
    });
  }
  。。。。。
  @Override
  //攔截事件，判斷事件是點擊事件還是滑動事件
  public boolean onInterceptTouchEvent(MotionEvent ev) {
    //在攔截處處理，在滑動設(shè)置了點擊事件的地方也能swip，點擊時又不能影響原來的點擊事件
    int action = ev.getAction();
    switch (action) {
      case MotionEvent.ACTION_DOWN:
        mDownX = ev.getX();
        mDownY = ev.getY();
        boolean handled = super.onInterceptTouchEvent(ev);
        mTouchState = TOUCH_STATE_NONE; //每次Down都把狀態(tài)變?yōu)闊o狀態(tài)
        //返回item的position
        mTouchPosition = pointToPosition((int) ev.getX(), (int) ev.getY());
 
        //得到那個點擊的item對應(yīng)的view，就是SwipeMenuLayout
        View view = getChildAt(mTouchPosition - getFirstVisiblePosition());
        //只在空的時候賦值 以免每次觸摸都賦值，會有多個open狀態(tài)
        if (view instanceof SwipeMenuLayout) {
          //如果有打開了 就攔截.mTouchView是SwipeMenuLayout
          //如果兩次是一個mTouchView，更新mTouchView；如果不是一個view，就攔截返回true
          if (mTouchView != null && mTouchView.isOpen() && !inRangeOfView(mTouchView.getMenuView(), ev)) {
            Log.i("tag","Listview中的onInterceptTouchEvent ACTION_DOWN。");
            return true;
          }
          mTouchView = (SwipeMenuLayout) view;
          mTouchView.setSwipeDirection(mDirection);//默認(rèn)是left=1
        }
        //如果摸在另外一個view，攔截此事件
        if (mTouchView != null && mTouchView.isOpen() && view != mTouchView) {
          handled = true;
        }
 
        if (mTouchView != null) {
          mTouchView.onSwipe(ev);
        }
        return handled;
      case MotionEvent.ACTION_MOVE: //MOVE時攔截事件，在onTouch中進(jìn)行處理
        float dy = Math.abs((ev.getY() - mDownY));
        float dx = Math.abs((ev.getX() - mDownX));
        if (Math.abs(dy) > MAX_Y || Math.abs(dx) > MAX_X) {
          //每次攔截的down都把觸摸狀態(tài)設(shè)置成了TOUCH_STATE_NONE 只有返回true才會走onTouchEvent 所以寫在這里就夠了
          if (mTouchState == TOUCH_STATE_NONE) {
            if (Math.abs(dy) > MAX_Y) {
              mTouchState = TOUCH_STATE_Y;
            } else if (dx > MAX_X) {
              mTouchState = TOUCH_STATE_X;
              if (mOnSwipeListener != null) {
                mOnSwipeListener.onSwipeStart(mTouchPosition);
              }
            }
          }
          return true;
        }
    }
    return super.onInterceptTouchEvent(ev);
  }
 
  @Override
  public boolean onTouchEvent(MotionEvent ev) {
    if (ev.getAction() != MotionEvent.ACTION_DOWN && mTouchView == null)
      return super.onTouchEvent(ev);
    int action = ev.getAction();
    switch (action) {
      case MotionEvent.ACTION_DOWN: //這個DOWN事件的前提是已經(jīng)攔截事件啦，所以可能的情況時：1.該menu已經(jīng)滑出來，再點擊左邊的item區(qū)域
                      //2.menu已經(jīng)滑出來，點擊了其他的item
                      //3.滑動item時，先DOWN在MOVE
        Log.i("tag","Listview中的onTouchEvent ACTION_DOWN。是否點擊了另一個item");
        int oldPos = mTouchPosition; //這里設(shè)計不合理，onInterceptTouchEvent之后直接調(diào)用的這個事件，mTouchPosition是一樣的
        if(mOldTouchPosition == -1){//-1 is the original value
          mOldTouchPosition = mTouchPosition;
        }
        mDownX = ev.getX();
        mDownY = ev.getY();
        mTouchState = TOUCH_STATE_NONE;
 
        mTouchPosition = pointToPosition((int) ev.getX(), (int) ev.getY());//list中
        //這里改了，pldPos沒有用，改為mOldTouchPosition
        if (mTouchPosition == mOldTouchPosition && mTouchView != null
            && mTouchView.isOpen()) {
          mTouchState = TOUCH_STATE_X; //x方向(橫著)滑開
          //調(diào)用SwipeMenuLayout的onSwipe()事件接口
          mTouchView.onSwipe(ev);
          Log.i("tag","Listview中的onTouchEvent ACTION_DOWN?；瑒恿嘶螯c擊了另一個item");
          return true;
        }
      if(mOldTouchPosition != mTouchPosition){ //when the DOWN position is different
          //shouldCloseMenu = true;
          mOldTouchPosition = mTouchPosition;
        }
        View view = getChildAt(mTouchPosition - getFirstVisiblePosition());
        //已經(jīng)有一個menu滑開了，此時如果點擊了另一個item
        //這個方法永遠(yuǎn)執(zhí)行不到！
        if (mTouchView != null && mTouchView.isOpen()) {
          //關(guān)閉swipeMenu
          mTouchView.smoothCloseMenu();
          mTouchView = null;
          // return super.onTouchEvent(ev);
          // try to cancel the touch event
          MotionEvent cancelEvent = MotionEvent.obtain(ev);
          cancelEvent.setAction(MotionEvent.ACTION_CANCEL);
          onTouchEvent(cancelEvent); //取消事件，時間結(jié)束
 
          //進(jìn)行menu close的回掉
          if (mOnMenuStateChangeListener != null) {
            mOnMenuStateChangeListener.onMenuClose(oldPos);
          }
          return true;
        }
 
        if (view instanceof SwipeMenuLayout) {
          mTouchView = (SwipeMenuLayout) view;
          mTouchView.setSwipeDirection(mDirection);
        }
        if (mTouchView != null) {
          mTouchView.onSwipe(ev);
        }
        break;
      case MotionEvent.ACTION_MOVE:
        //有些可能有header,要減去header再判斷
        mTouchPosition = pointToPosition((int) ev.getX(), (int) ev.getY()) - getHeaderViewsCount();
        //如果滑動了一下沒完全展現(xiàn)，就收回去，這時候mTouchView已經(jīng)賦值，再滑動另外一個不可以swip的view
        //會導(dǎo)致mTouchView swip 。 所以要用位置判斷是否滑動的是一個view
        if (!mTouchView.getSwipEnable() || mTouchPosition != mTouchView.getPosition()) {
          break;
        }
        float dy = Math.abs((ev.getY() - mDownY));
        float dx = Math.abs((ev.getX() - mDownX));
        if (mTouchState == TOUCH_STATE_X) { //X方向的話
          if (mTouchView != null) {
            mTouchView.onSwipe(ev); //調(diào)用滑動事件
          }
          getSelector().setState(new int[]{0});
          ev.setAction(MotionEvent.ACTION_CANCEL);
          super.onTouchEvent(ev);//事件結(jié)束
          return true;
        } else if (mTouchState == TOUCH_STATE_NONE) {//DOWN事件后的Move
          if (Math.abs(dy) > MAX_Y) {
            mTouchState = TOUCH_STATE_Y;
          } else if (dx > MAX_X) {
            mTouchState = TOUCH_STATE_X;
            if (mOnSwipeListener != null) {
              mOnSwipeListener.onSwipeStart(mTouchPosition);
            }
          }
        }
        break;
      case MotionEvent.ACTION_UP: //關(guān)閉了menu
        Log.i("tag","onTouchEvent事件的ACTION_UP");
        if (mTouchState == TOUCH_STATE_X) {
          if (mTouchView != null) {
            Log.i("tag","onTouchEvent事件的ACTION_UP 為什么沒有關(guān)閉");
            boolean isBeforeOpen = mTouchView.isOpen();
            //調(diào)用滑動事件
            mTouchView.onSwipe(ev);
            boolean isAfterOpen = mTouchView.isOpen();
            if (isBeforeOpen != isAfterOpen && mOnMenuStateChangeListener != null) {
              if (isAfterOpen) {
                mOnMenuStateChangeListener.onMenuOpen(mTouchPosition);
              } else {
                mOnMenuStateChangeListener.onMenuClose(mTouchPosition);
              }
            }
            if (!isAfterOpen) {
              mTouchPosition = -1;
              mTouchView = null;
            }
          }
          if (mOnSwipeListener != null) {
            //進(jìn)行滑動結(jié)束的回掉
            mOnSwipeListener.onSwipeEnd(mTouchPosition);
          }
          ev.setAction(MotionEvent.ACTION_CANCEL);
          super.onTouchEvent(ev);
          return true;
        }
        break;
    }
    return super.onTouchEvent(ev);
  }
 
  public void smoothOpenMenu(int position) {
    if (position >= getFirstVisiblePosition()
        && position <= getLastVisiblePosition()) {
      View view = getChildAt(position - getFirstVisiblePosition());
      if (view instanceof SwipeMenuLayout) {
        mTouchPosition = position;
        if (mTouchView != null && mTouchView.isOpen()) {
          mTouchView.smoothCloseMenu();
        }
        mTouchView = (SwipeMenuLayout) view;
        mTouchView.setSwipeDirection(mDirection);
        mTouchView.smoothOpenMenu();
      }
    }
  }
  /**
   * 可以進(jìn)去看源代碼，就是將不同的單位統(tǒng)一轉(zhuǎn)換成像素px，這里是dp->px
   * @param dp
   * @return
   */
  private int dp2px(int dp) {
    return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
        getContext().getResources().getDisplayMetrics());
  }
  public static interface OnMenuItemClickListener {
    boolean onMenuItemClick(int position, SwipeMenu menu, int index);
  }
 
  public static interface OnSwipeListener {
    void onSwipeStart(int position);
 
    void onSwipeEnd(int position);
  }
 
  public static interface OnMenuStateChangeListener {
    void onMenuOpen(int position);
 
    void onMenuClose(int position);
  }
  。。。。
}

I/tag: Listview中的onInterceptTouchEvent ACTION_DOWN。view=class com.baoyz.swipemenulistview.SwipeMenuLayout
I/tag: onInterceptTouchEvent ACTION_DOWN handled=false
I/tag: SwipeMenuLayout onTouchEvent
I/tag: Listview中的onTouchEvent ACTION_DOWN。是否點擊了另一個item
I/tag: oldPos=1 mTouchPosition=1
I/tag: ACTION_MOVE downX = 987, moveX = 906.69666, dis=80
I/tag: ACTION_MOVE downX = 987, moveX = 855.5785, dis=131
I/tag: ACTION_MOVE downX = 987, moveX = 797.6258, dis=189
I/tag: ACTION_MOVE downX = 987, moveX = 735.9639, dis=251
I/tag: ACTION_MOVE downX = 987, moveX = 666.5104, dis=320
I/tag: ACTION_MOVE downX = 987, moveX = 589.0626, dis=397
I/tag: ACTION_MOVE downX = 987, moveX = 509.15567, dis=477
I/tag: ACTION_MOVE downX = 987, moveX = 431.7224, dis=555
I/tag: ACTION_MOVE downX = 987, moveX = 361.2613, dis=625
I/tag: ACTION_MOVE downX = 987, moveX = 319.70398, dis=667
I/tag: onTouchEvent事件的ACTION_UP
I/tag: onTouchEvent事件的ACTION_UP 為什么沒有關(guān)閉
I/tag: isFling=true e1.getX()=987.08606 e2.getX()=319.70398 velocityX=-4122.911 MAX_VELOCITYX=-1500
I/tag: ACTION_UP downX = 987, moveX = 319.70398
I/tag: mContentView.getLeft()=-540, mMenuView=540

//這個方法永遠(yuǎn)執(zhí)行不到！作者的愿意是當(dāng)mTouchPosition ！= oldPos時CloseMenu，但是按照這個代碼這兩個值是永遠(yuǎn)相等的，
        //因為對應(yīng)的是一個MotionEvent當(dāng)然就相等啦
        if (mTouchView != null && mTouchView.isOpen()) {
          //關(guān)閉swipeMenu
          mTouchView.smoothCloseMenu();
          //mTouchView = null;
          // return super.onTouchEvent(ev);
          // try to cancel the touch event
          MotionEvent cancelEvent = MotionEvent.obtain(ev);
          cancelEvent.setAction(MotionEvent.ACTION_CANCEL);
          onTouchEvent(cancelEvent); //取消事件，時間結(jié)束
 
          //進(jìn)行menu close的回掉
          if (mOnMenuStateChangeListener != null) {
            mOnMenuStateChangeListener.onMenuClose(oldPos);
          }
          return true;
        }