Android Thread Priority

Time: December 28, 2015 16:41:31
Process.setthreadpriority (Process.thread_priority_background); Set the thread priority to the background, so that when multiple threads are concurrent, many insignificant threads will be allocated a less CPU time, which facilitates the processing of the main thread, in the following ways:
int Thread_priority_audio//thread priority used by standard music playback
int Thread_priority_background//Standard daemon
int Thread_priority_default//priority of default app
int Thread_priority_display//Standard display system priority, mainly to improve UI refresh
int Thread_priority_foreground//Standard foreground thread priority
int thread_priority_less_favorable//below favorable
int thread_priority_lowest//valid thread lowest priority
int thread_priority_more_favorable//above favorable
int Thread_priority_urgent_audio//Standard more important audio playback priority
The int thread_priority_urgent_display//standard is more important than the display priority and is also applicable for input events.

From for notes (Wiz)

Android Thread Priority