How to prevent auto-lock screen in hooking SpringBoard?

问题

My application needs the screen be unlocked to do some functions, usually this app runs as background process, how can I prevent auto-lock? I mean on jailbroken environment.

Why does the code below can not be available from SpringBoard?

[[UIApplication sharedApplication] setIdleTimerDisabled:YES];

回答1:

[[UIApplication sharedApplication] setIdleTimerDisabled:YES];

回答2:

Have a look on SpringBoard class

This code should be run in SpringBoard:

SpringBoard *sb = [UIApplication sharedApplication];
[sb clearIdleTimer];

After you get things done, remember to reset it to normal state:

[sb resetIdleTimerAndUndim:YES]; // or NO if you don't want the screen dims at once.

来源：https://stackoverflow.com/questions/17467251/how-to-prevent-auto-lock-screen-in-hooking-springboard