Android开发心得-ListView的监听事件
2015-05-30 09:17
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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
[java] view
plaincopy
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;
}
}
}
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
[java] view
plaincopy
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;
}
}
}
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