Question

I’m learning from Google’s Android developing tutorial and i came across a problem.
In Android’s Connecting to the Network Guide it says to create a class that extends AsyncTask.

So when I wrote the class it automatically implements the method as follows:

private Object doInBackground(Object... args) {..}  //it's fine

but when i try writing just as it says in the tutorial:

private String doInBackground(String... args) {..} //it gives an error

and the error says:

The method doInBackground(String...) of type MainActivity.DownloadWebpageText must override a superclass method.

So how do I change Object to String without getting an error there?

Answer 1

When you extend AsyncTask you must define the inputs to the background, progress, and post execute methods. Like this

private class MyTask extends AsyncTask<String, Void, Boolean>

Which would define a class that extends AsyncTask and takes as input String and returns a Boolean to the onPostExecute method.