android.os - JRE Emulation | JRE Emulation
package

android.os

Provides basic operating system services, message passing, and inter-process communication on the device.

Classes

AsyncTask<Params, Progress, Result>

AsyncTask enables proper and easy use of the UI thread. 

SystemClock Core timekeeping facilities. 

Enums

AsyncTask.Status Indicates the current status of the task.