Simple step by step tutorial to send a HTTP GET network request on Android using Retrofit library
In this example we will learn how to programatically write text/paste image on an Image in Android
AlarmManager as the name itself suggests is used to schedule time based operations outside the lifecycle of your application. With the help of AlarmManager you can schedule your application to run at any scheduled time in future. Once the scheduled time arrives the target application starts running even if the device is asleep.