Android handler to prevent memory overflow

Time: April 20, 2016 14:21:49

  
 

   
  

  
static class MyHandler extends Handler {
   
  

  
 private WeakReference<Context> weakReference;
   
  

  

   
  

  
 public MyHandler(Context context) {
   
  

  
 weakReference = new WeakReference<>(context);
   
  

  
 }
   
  

  

   
  

  
 @Override
   
  

  
 public void handleMessage(Message msg) {
   
  

  
 XXActivity activity = (XXActivity) weakReference.get();
   
  

  
 if (activity != null) {
   
  

  
 activity.textView.setText(result);
   
  

  
 }
   
  

  
 }
   
  

  
 }
  
 

Note: In the highlighted section, you need to convert the context obtained from Weakreference.get () to the activity subclass you want to get the appropriate control for the current activity. If you simply convert to activity, you cannot get the controls under the activity and manipulate them.

From for notes (Wiz)

Android handler to prevent memory overflow