Question

I realize this issue is somewhat trivial, but I’m interested in knowing the “correct” answer.

I’m trying to extend android.os.AsyncTask<Params, Progress, Result>,
but my task doesn’t require any parameters.

Given that I have to overload protected Result doInBackground(Params... params),
what is the “best” way to pass in no parameters?

Currently, I’m using Object as the Params type and starting the task with:
new MyAsyncTask().execute( (Object)null );
This is totally functional, but I’m new to Java and don’t know if this is a good way of accomplishing what I’m trying to do.

Obviously I can’t put something like void or null in for the Params field, but if I use a wildcard I’m unsure of what to do about the arguments to doInBackground(Params... params).

Any suggestions?

Answer 1

Use Void (note the capital V) for any data types that you do not need. Be sure to use the @Override annotation, so the compiler will catch any problems. Here is a sample application demonstrating this.