The new update for Android loopj Async Http lib is out and they changed a lot. Now you need to manually set Looper.prepare() otherwise it uses synchronious mode ins
Looper.prepare()
It's because this version have a several bugs.
I high recomend you use OkHttp async layer, it's basically the same structure.
Or if you want the same structure based on OkHttpClient (Square Inc) use this:
https://github.com/leonardoxh/AsyncOkHttpClient