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Android Build a Blog Reader Android App Getting Data from the Web Moving Work from the Main Thread to an AsyncTask

Mr Mac
Mr Mac
8,213 Points
Posted by Mr Mac
Mr Mac
8,213 Points

Getting Data from the Web, Moving work from the main thread to Asynctask. Challenge 2/3

Trying to solve this challenge and have redone the video qute a few times. Still unable to comprehend the challenge of "Declare the 'doInBackground(Object... params)' method inside your custom AsyncTask. Make it 'protected', return a String, and then simply return an empty String in the body. Don't forget the '@Override' annotation on the line above the declaration!"

I have the following code down:

"package com.example;

import android.os.Bundle; import android.view.View; import java.io.IOException; import java.net.MalformedURLException; import android.util.Log; import android.os.AsyncTask;

public class MainListActivity extends ListActivity {

public static final String URL = "http://www.teamtreehouse.com";
public static final String TAG = MainListActivity.class.getSimpleName();
  private class CustomAsyncTask extends AsyncTask<Object,Void,String>{
    @Override
    protected String doInBackground(){
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main_list);

    try {
        URL treehouseUrl = new URL(URL);
        HttpURLConnection connection = (HttpURLConnection) treehouseUrl.openConnection();
        connection.connect();
        int responseCode = connection.getResponseCode();
    }
    catch (MalformedURLException e) {
        Log.e(TAG, "MalformedURLException caught!", e);
    }
    catch (IOException e) {
        Log.e(TAG, "IOException caught!", e);
    }};
      return "";
}

}

Cheers!

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Your doInBackground is including onCreate. And there's no Object... params either.

I think something like this should work ... 

public class MainListActivity extends ListActivity {

    public static final String URL = "http://www.teamtreehouse.com";
    public static final String TAG = MainListActivity.class.getSimpleName();

      private class CustomAsyncTask extends AsyncTask<Object, Void, String>{
        @Override
        protected String doInBackground(Object ... params){
          return "";
        }
    }
    @Override
    public void onCreate(Bundle savedInstanceState) { ...

Hope that helps!

Steve.

Mr Mac
Mr Mac
8,213 Points
Mr Mac
Mr Mac
8,213 Points

Thanks Steve!