Update ListView in the main thread from another thread

Question

I have a separate thread running to get data from the internet. After that, I would like to update the ListView in the main thread by calling adapter.notifyDataSetChanged(). But it does not work. Any workaround for that? Thanks.

Answer 1

Assume yourActivity is the activity that your widget has been placed into it, yourView is The widget and adapter is The widget's adapter:

yourActivity.runOnUiThread(new Runnable() {
 public void run() {    
         try{
                adapter.notifyDataSetChanged();
         }
         catch{}
 }
}

Answer 2

Or, post a message to the listview's message queue (which would execute on the UI thread):

list.post(new Runnable() {                  
    @Override
    public void run() {
       adapter.notifyDataSetChanged();

    }
});