android中OnItemClickListener的参数解释

时间:2022-06-15 01:27:41
@Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) {}

基本解释:
parent: The AdapterView where the click happened.
view: The view within the AdapterView that was clicked (this will be a view provided by the adapter)
position: The position of the view in the adapter.
id: The row id of the item that was clicked. 我的解释:
parent:   因为ListView,GridView,Spinner,Gallery等继承自AdapterView,所以AdapterView即指的是ListView,GridView,Spinner,Gallery等子view
view:    就是AdapterView中某个被点击的item,这个item是一个View(里面可能包含其它子View),可以利用view.findViewById获得其子View
position:  就是点击发生的view(item)在可视屏幕范围内的index。
id:    就是点击发生的view(item)在整个AdapterView范围内的index。 因此,界面出来后,若屏幕没有发生任何滚动的情况下,position等于id。若屏幕发生了滚动,则大多数情况下position不等于id,除非屏幕又滚到了开头。