Fire event on AsyncTask finished
android, android-asynctask, android-event, interface, listener
Solution
I would like to add an event that is fired by the post-execute method of the AsyncTask class. Then a listener on the login activity will close itself and the main activity is visible.
`onPostExecute()` is already a callback, you could create another callback like you described but it is unnecessary. Simply pass a reference of your login Activity to your AsyncTask then use it to call `finish()` and `startActivity()` in `onPostExecute()`.
Problem
My app has a login activity and it checks the credentials via an internet website. To do so, I (have to) use an AsyncTask class. When login is successful, a global variable is set to true. Because this is asynchronous, the activity won't wait for the result so I would like to add an event that is fired by the post-execute method of the AsyncTask class. Then a `listener` on the login activity will close itself and the main activity is visible. I would like to know if and how this is possible. I have tried some examples from other posts, but can't figure it out from those. I think I have to do the following: - create an `interface` in the `AsyncTask` class - from the `post_execute` method of that class, I raise the event, but how? - put a `listener` in the login activity, but how? any help is appreciated. Regards, Eric