you can use my library
Add to your android project Or show on github
https://github.com/iyadseizer/mikro.git

hello all that is easy way to fetch your data in http-header-field [important] [flash=]example[/flash] http-header-field="Authorization:key=Izalg..gf,Content-Type:application/json" and in body you will write a json template as this http-data="{\"to\":\"deviceToken\"...