Use PullToRefresh to differentiate between pull-down refresh and pull-up loading

Use PullToRefresh to differentiate between pull-down refresh and pull-up loading

There are a lot of articles on how to use PullToRefresh. I will not go into details here.

When using the PullToRefresh library, you need to distinguish between PullToRefresh and pull-down. Baidu will get a method to modify the PullToRefresh. java source file, such as callback.

In fact, PullToRefresh has provided us with a method to view the source code.

Com. handmark. pulltorefresh. library. PullToRefreshBase. java sets a piece of code to refresh the listener:

@Overridepublic final void setOnRefreshListener(OnRefreshListener
 
   listener) {mOnRefreshListener = listener;mOnRefreshListener2 = null;}@Overridepublic final void setOnRefreshListener(OnRefreshListener2
  
    listener) {mOnRefreshListener2 = listener;mOnRefreshListener = null;}
  
 

Let's look at com. handmark. pulltorefresh. library. PullToRefreshBase. OnRefreshListener2.

/** * An advanced version of the Listener to listen for callbacks to Refresh. * This listener is different as it allows you to differentiate between Pull * Ups, and Pull Downs. *  * @author Chris Banes */public static interface OnRefreshListener2
  
    {// TODO These methods need renaming to START/END rather than DOWN/UP/** * onPullDownToRefresh will be called only when the user has Pulled from * the start, and released. */public void onPullDownToRefresh(final PullToRefreshBase
   
     refreshView);/** * onPullUpToRefresh will be called only when the user has Pulled from * the end, and released. */public void onPullUpToRefresh(final PullToRefreshBase
    
      refreshView);}
    
   
  

Therefore, you can:

mPullRefreshListView.setOnRefreshListener(new  com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2
  
   () {@Overridepublic void onPullDownToRefresh(PullToRefreshBase
   
     refreshView) {Toast.makeText(PullToRefreshListActivity.this, "onPullDownToRefresh", Toast.LENGTH_SHORT).show();new GetDataTask().execute();}@Overridepublic void onPullUpToRefresh(PullToRefreshBase
    
      refreshView) {Toast.makeText(PullToRefreshListActivity.this, "onPullUpToRefresh", Toast.LENGTH_SHORT).show();new GetDataTask().execute();}});