Android开发时,最常用的控件之一就是ListView了,而使用ListView的同时,必然需要对它设置监听器,常用的监听器有这么几个
1.OnItemClickListener
2.OnTouchListener
3.OnScrollListener
1监听器在点击该项目的子项时触发,2监听器在触碰到ListView时触发,3监听器在ListView滚动时触发,
下面几个例子分别表述了具体处理的办法
- class ItemClickEvent implements OnItemClickListener {
- @Override
- public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
- long arg3) {
- // TODO Auto-generated method stub
- // arg1.setVisibility(View.GONE);
- // 对子项处理的办法
- // BtnCheck(0);
- System.out.println(arg2);
- }
- }
- class ItemTouchEvent implements OnTouchListener {
- @Override
- public boolean onTouch(View v, MotionEvent event) {
- // TODO Auto-generated method stub
- // System.out.println("触摸..");
- if (event.getAction() == MotionEvent.ACTION_MOVE) {
- // System.out.println("MOVE"); //接触到ListView移动时
- BtnCheck(0);
- } else if (event.getAction() == MotionEvent.ACTION_UP) {
- // System.out.println("up"); //离开ListView时
- BtnCheck(currentPage);
- } else if (event.getAction() == MotionEvent.ACTION_DOWN) {
- // System.out.println("down"); //接触到ListView时
- BtnCheck(0);
- }
- return false;
- }
- }
- class LvScrollEvent implements OnScrollListener {
- @Override
- public void onScroll(AbsListView view, int firstVisibleItem,
- int visibleItemCount, int totalItemCount) {
- // TODO Auto-generated method stub
- }
- @Override
- public void onScrollStateChanged(AbsListView view, int scrollState) {
- // TODO Auto-generated method stub
- switch (scrollState) {
- case OnScrollListener.SCROLL_STATE_IDLE: //
- BtnCheck(currentPage);
- // mBusy = false;
- System.out.println("停止...");
- break;
- case OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
- BtnCheck(0);
- // mBusy = true;
- System.out.println("正在滑动...");
- break;
- case OnScrollListener.SCROLL_STATE_FLING:
- BtnCheck(0);
- // mBusy = true;
- System.out.println("开始滚动...");
- break;
- }
- }
- }
本文详细介绍了Android开发中ListView的三种常用监听器:OnItemClickListener、OnTouchListener和OnScrollListener,并提供了具体的实现示例代码。
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