idleTimerDisabled not working since iPhone 3.0

Question

I have used:

[UIApplication sharedApplication].idleTimerDisabled = YES;

in a number of Apps developed and running under iPhone OS 2.x and n

Answer 1

Even in 2015, using iOS 8.2, this bug is still alive and kicking.

Here's my solution, using XCode 6.2.

iPhone - phone goes to sleep even if idleTimerDisabled is YES

Basically, even now, in 2015, the only way to safely make sure that the device doesn't go to sleep is to repeatedly call a piece of code to keep the device awake.

-(void)callEveryTwentySeconds
{
    //  DON'T let the device go to sleep during our sync
    [[UIApplication sharedApplication] setIdleTimerDisabled:NO];
    [[UIApplication sharedApplication] setIdleTimerDisabled:YES];
}