Tired of AsyncTask in Android?

async.groovy

// Tired of AsyncTask in Android?
// Here's how you could write it in Groovy!

Fluent.async {
   new URL('http://foo').text
}.then { text ->
   textView.text = text
}

This particular example crashes for me with the following stacktrace:

    java.lang.RuntimeException: An error occured while executing doInBackground()
            at android.os.AsyncTask$3.done(AsyncTask.java:300)
            at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
            at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
            at java.util.concurrent.FutureTask.run(FutureTask.java:242)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:841)
     Caused by: java.lang.ClassCastException: java.lang.Object[] cannot be cast to java.lang.Void[]
            at me.champeau.gr8confagenda.app.Fluent.doInBackground(Fluent.groovy)
            at android.os.AsyncTask$2.call(AsyncTask.java:288)
            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:841)

etsinko: I had the same problem. You need to download this class to your project and save it as Fluent.java, not Fluent.groovy. Then it will work.