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Android

Posted by Tunde Adegoroye
Tunde Adegoroye
20,597 Points

Finishing Our AsyncTask code challenge

Im currently on the 2nd step on this code challenge:

Inside 'onPostExecute()', set the member variable 'mStatus' to the value passed into 'onPostExecute()'. Then call the 'updateStatusLabel()' method of 'CustomActivity'.

i am using this

import android.os.AsyncTask;
import android.os.Bundle;

    public class CustomActivity extends Activity {

    public String mStatus;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom);
        CustomAsyncTask task = new CustomAsyncTask();
        task.execute();
    }

    protected void updateStatusLabel() {
        super.updateStatusLabel();
    }

    protected class CustomAsyncTask extends AsyncTask<Object, Void, String> {   
        @Override
        protected String doInBackground(Object... params) {
            // Imagine this is some code to do some work
            return "Done!";
        }
    @Override
    protected void onPostExecute(String result){
    mStatus = result.updateStatusLabel();

    }

    }

But i can not see where i am getting it wrong

help please it's saying

Bummer! Compilation Error! Check your syntax and make sure you are 1) setting 'mStatus' correctly and 2) calling 'updateStatusLabel()' correctly.

Nick Pettit
Nick Pettit
Treehouse Teacher
Nick Pettit
Nick Pettit
Treehouse Teacher

Hi Tunde Adegoroye,

I'm not sure what the answer is here, but I've pinged Ben Jakuben, our Andrioid teacher. He should be able to help you out. :)

3 Answers

Ben Jakuben
STAFF
Ben Jakuben
Treehouse Teacher
Ben Jakuben
Ben Jakuben
Treehouse Teacher

Let's take a look at the line you added to onPostExecute:

mStatus = result.updateStatusLabel();

On the right side, the way this is written, you are trying to call the updateStatusLabel() method of the result variable, which is a String. That method isn't a String method, though. It's a local method from the CustomActivity class we are working in.

mStatus is a String variable, so you can simply assign the result String variable to it.

Then on a new line you just want to call the method updateStatusLabel() all by itself. Since it's defined in the CustomActivity class (which contains all of our code, even the CustomAsyncTask) and doesn't return anything, you can simply call it on its own.

Allan Evans
Allan Evans
9,501 Points

Thanks for answering that, I was a little confused on the "updateStatusLabel()" as well.

x y
x y
1,908 Points
x y
x y
1,908 Points

Compilation Error! Verify that the 'onPostExecute()' method starts with 'protected void' and actually returns a String inside the curly braces, and check the rest of your syntax

Ben Jakuben
Ben Jakuben
Treehouse Teacher
Ben Jakuben
Ben Jakuben
Treehouse Teacher

Did you ever get this working? If not, paste your code in a reply and we'll get you there. :)

Dave Buda
Dave Buda
5,157 Points
Dave Buda
Dave Buda
5,157 Points

protected void onPostExecute(String result){ mStatus = result; updateStatusLabel();