Question

i know it should be context.
what exactly is a context though.
usually when i create a dialog in a class
i do something like this:

final Dialog dialog = new Dialog(this);

but now i am trying to create a dialog in an AsyncTask<>
therefore i cannot do the above cause AsyncTask isn’t a context evidently.
the AsyncTask is a class in itself, which is to say its not a subclass right now.

public class popTask extends AsyncTask<Void, Void, String> {

Context con =

@Override
protected void onPostExecute(String result) {
    // TODO Auto-generated method stub
    super.onPostExecute(result);

    final Dialog dialog = new Dialog(con);
    dialog.setContentView(R.layout.custom);
    dialog.setTitle("New & Hot advertise");

    // set the custom dialog components - text, image and button
    TextView text = (TextView) dialog.findViewById(R.id.text);
    text.setText("Android custom dialog example!");
    ImageView image = (ImageView) dialog.findViewById(R.id.image);
    image.setImageResource(R.drawable.yoda);

    Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
    // if button is clicked, close the custom dialog
    dialogButton.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            dialog.dismiss();
        }
    });

    dialog.show();
}


@Override
protected String doInBackground(Void... params) {
    // TODO Auto-generated method stub
    return null;
}



}

Answer 1

The following are the two ways you can send your context from the activity where you are executing your AsyncTask:

popTask pTask = new popTask(mContext); //OR
pTask.execute(mContext);

In your popTask create a private variable where you can set your context.

In the first option you need to have a constructor for your class popTask where you are accepting a context.

For the second option if you are not passing anything meaningful to the function doInBackground() you can change the following line:

public class popTask extends AsyncTask<Object, Void, String>

protected Object doInBackground(Object... params) {
this.mContext = (Context) params[0];

}

you will receive the context object in the doInBackground() which you can set in the private Context variable of the popTask class and then access it in the doInBackground() function.