今天在做demo时，须要设置ListView的item的长按和点击事件。OnItemLongClickListener和OnItemClickListener，然而点击事件能够实现，可是在长按操作时会同一时候触发点击事件（长按和点击冲突），然后查看了一下Android的相关源代码，能够看到系统是优先对应clicklisener的，他是没有返回值的的。而对于OnItemLongClickListener是有一个返回值标识。
对于一次长按操作。假设返回false，则2个lisener都会对应，假设返回true则系统仅仅处理长按事件。
因此。想要自己的OnItemLongClickListener长按事件生效，须要将返回值设为true。
以下是源代码
/**
* Interface definition for a callback to be invoked when an item in this
* AdapterView has been clicked.
*/
public interface OnItemClickListener { /**
* Callback method to be invoked when an item in this AdapterView has
* been clicked.
* <p>
* Implementers can call getItemAtPosition(position) if they need
* to access the data associated with the selected item.
*
* @param parent The AdapterView where the click happened.
* @param view The view within the AdapterView that was clicked (this
* will be a view provided by the adapter)
* @param position The position of the view in the adapter.
* @param id The row id of the item that was clicked.
*/
void onItemClick(AdapterView<?> parent, View view, int position, long id);
}
/**
* Interface definition for a callback to be invoked when an item in this
* view has been clicked and held.
*/
public interface OnItemLongClickListener {
/**
* Callback method to be invoked when an item in this view has been
* clicked and held.
*
* Implementers can call getItemAtPosition(position) if they need to access
* the data associated with the selected item.
*
* @param parent The AbsListView where the click happened
* @param view The view within the AbsListView that was clicked
* @param position The position of the view in the list
* @param id The row id of the item that was clicked
* 源代码这里已经给出解释。假设返回值设为true。则系统消耗掉长按事件
* @return true if the callback consumed the long click, false otherwise
*/
boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id);
}