Android Helper code to move code back and forth between an AsyncTask background thread and the main UI thread, and to implicitly convert a block of code into an OnClickListener.

Helpers.scala

object Helpers {

  def backgroundThread(code: => Unit) {
    val task = new AsyncTask[AnyRef,AnyRef,AnyRef]() {
      override def doInBackground(params: AnyRef*) = {
        code
        null
      }
    }
    task.execute()
  }

  def uiThread(code: => Unit) {
    new Handler(Looper.getMainLooper()).post(new Runnable() {
      override def run() {
        code
      }
    })
  }

  implicit def onClick(handler: View => _): OnClickListener =
    new OnClickListener() {
      override def onClick(source: View) { handler(source) }
    }

}