Question

I create a GLKViewController like this:

// Create a GLK View Controller to handle animation timings
_glkVC = [[GLKViewController alloc] initWithNibName:nil bundle:nil];
_glkVC.preferredFramesPerSecond = 60;
_glkVC.view = self.glkView;
_glkVC.delegate = self;
_glkVC.paused = YES;
NSLog(@"initial state: %@", _glkVC.paused ? @"paused" : @"running");

but it immediately starts calling the delegate update method and the output from the NSLog above is: initial state: running

I am managing my view updates with setNeedsDisplay but I want the GLKViewController to handle animations from time to time so I want to unpause it only when needed. Is there a way to start the controller in a paused state?

Answer 1

In lieu of any answers I’m using this work-around:

I set .preferredFramesPerSecond = 1 initially and then in the update method I check if(preferredFramesPerSecond == 1) and set .paused = YES (and also set my real desired value for preferredFramesPerSecond). I can then allow the rest of the update method to run once after initialisation, or return immediately if I don’t want it to run yet.

I then trigger redraws manually as needed with setNeedsDisplay and unpause it when I need it to animate.

If anyone has a better solution please answer as usual.