How to throw an exception if a method is executed from main thread

Question

I have a class with severeal methods which extract data from a sqlite database. I would like to "force" the users of this class to call these methods in a thread or an asynctask.

How can i prevent a method to run on the main thread ?

I would like to achieve something similar to the android.os.NetworkOnMainThreadException thrown when you try to do some networking on the ui thread.

Answer 1

Do something like:

if (Looper.myLooper() == Looper.getMainLooper()) {
   throw new DontDoThisOnUiThreadPleaseException();
}

Source: Looper.getMainLooper() and Looper.myLooper().