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42、通过ontouch检测expandableListview的单击、长按、列表滚动

 

一、在model定义变量:

public boolean isExpandableListviewScroll = false;//这个是

 

首先监听expandableListview的滚动:

    Expandablelistview_all_waiting_push.setOnScrollListener(new OnScrollListener() {
            
            @Override
            public void onScrollStateChanged(AbsListView view, int scrollState) {
                // TODO Auto-generated method stub
                isExpandableListviewScroll = true;    
                    
            }
            
            @Override
            public void onScroll(AbsListView view, int firstVisibleItem,
                    int visibleItemCount, int totalItemCount) {
                // TODO Auto-generated method stub
                //push_all_waiting_expandable_adapter.isScroll = true;
            }
        });

 

 

二、在adapter中定义变量:

public boolean flagLongClick = true;

public boolean flagPressed = true;

 

         otl = new View.OnTouchListener() {
                    
                    @Override
                    public synchronized boolean onTouch(View v, MotionEvent ev) {
                        // TODO Auto-generated method stub
                            
                          switch (ev.getAction() & MotionEvent.ACTION_MASK) {
                            
                            case MotionEvent.ACTION_DOWN:
                                    
                                    mDownX = ev.getX();
                                    mDownY = ev.getY();
                                    lastPressTime = System.currentTimeMillis();
                                    mealDone.isExpandableListviewScroll = false;
                                
                                    if(!flagPressed)
                                    {
                                        flagPressed = true;
                                    
                                        CommonUtils.LogWuwei(tag,"lastPressTime is "+lastPressTime);
                                    
                                      new Handler().postDelayed(new Runnable() {
                                        
                                        @Override
                                        public void run() {
                                            // TODO Auto-generated method stub
                                            
                                            CommonUtils.LogWuwei(tag, "flagLongClick is "+flagLongClick);
                                            
                                            if(flagLongClick && !mealDone.isExpandableListviewScroll)
                                            {
                                                mealDone.isExpandableListviewScroll = false;
                                                btn_whether_packaged.performLongClick();
                                                flagLongClick = false;
                                            }
                                            
                                        }
                                    }, 300);
                                    }
                                    
                                    
                                break;
                            case MotionEvent.ACTION_CANCEL:
                            case MotionEvent.ACTION_UP:
                                    flagPressed = false;
                                    
                                    if (!isScroll) 
                                    {
                                        if(mealDone.isExpandableListviewScroll)
                                        {
                                            mealDone.isExpandableListviewScroll = false;
                                            return true;
                                        }
                                        
                                        long nowTime = System.currentTimeMillis();
                                        
                                        
                                        if(nowTime-lastPressTime > 300)
                                        {
                                            
                                            lastPressTime = 0;
                                            flagLongClick = true;
                                            
                                            
                                        }
                                        else
                                        {
                                            flagLongClick = false;
                                            Log.e(tag, "onClick ");
                                            btn_whether_packaged.performClick();
                                            
                                        }
                                        return false;    
                                    }
                                    else
                                    {
                                        isScroll = false;
                                        return false;    
                                    }
                                
                            case MotionEvent.ACTION_MOVE:
                                     flagPressed = false;
                                     flagLongClick = true;
                                     
                                     if(Math.abs(mDownX-ev.getX()) > 150)
                                     {
                                        Log.e(tag, "action move is scroll");
                                        isScroll = true;
                                     }
                                break;
                            default:
                                    return false    ; 
                        } 
                        
                          return false    ;
                        

 

处理流程:

0、如果expandableListview滚动,则isExpandableListviewScroll置为

 

1、检测到expandableListview的item按下

①记录按下时间 lastPressTime ;

①首先判断上次按下是否弹起,如果弹起,那么启动一个0.3秒后执行的的定时任务,

②定时任务如下:

判断是否长按且expandableListview没有滚动(!isExpandableListviewScroll && flagLongClick

如果符合条件,将isExpandableListviewScroll置为false,同时响应事先写好的长按事件。

 

2、那么如何响应单击事件?

单击事件手抬起的时候,也就是在响应MotionEvent.ACTION_UP的时候,手势抬起处理流程:

①flagPressed = true;意思就是本次按下事件已经抬起

判断isExpandableListviewScroll是否为真,也就是看是否在滚动,

  2、1、如果是滚动,那么就什么不用响应

  2、2、获取当前时间,如果当前时间和按下时间差小于0.3秒,那么执行实现写好的单击事件

 

 

3、move事件

如果move则认为手抬起、长按事件flag为真(因为手一直未松开)

 

posted @ 2015-07-09 17:31  kunyashaw  阅读(290)  评论(0编辑  收藏  举报
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