Cacher is the code snippet organizer for pro developers

//when updating UI within "doInBackground" method, use runOnUIThread

runOnUiThread(new Runnable() {
     
      @Override
      public void run() {
          //perform action
      }
  });

//enter command into main thread, can pass parameter in "execute" method
Object object = new Object();
new JSONTask().execute(object);

//to reference Object parameter, call objects[0] in "doInBackground"
public class JSONTask extends AsyncTask <Object, String, String> {

    Object mainObject;
  
    @Override
    protected void onPreExecute() {
      //perform action
    }

    @Override
    protected String doInBackground(Object... objects) {
      
      mainObject = objects[0];
      //works because reference semantics
      
      String data = "";
      return data;  
    }

    @Override
    protected void onPostExecute(String result) { 
      //modify mainObject and perform action on result that doInBackground returns
    }
}

//calling .get() method on "new JSONTask().execute()" will freeze UI thread