David Langley langleyd
kommen
/ gist:5743831
Created
June 9, 2013 14:56
Queue presentViewController and dismissViewControllerAnimated with dispatch semaphores.
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| - (void) queueViewControllerTransition:(BOOL)show { | |
| static dispatch_queue_t presentAndDismissViewControllerQueue; | |
| static dispatch_once_t onceToken; | |
| dispatch_once(&onceToken, ^{ | |
| presentAndDismissViewControllerQueue = dispatch_queue_create("presentAndDismissViewControllerQueue", DISPATCH_QUEUE_SERIAL); | |
| }); | |
| dispatch_async(presentAndDismissViewControllerQueue, ^{ | |
| dispatch_semaphore_t sema = dispatch_semaphore_create(0); | |
| dispatch_async(dispatch_get_main_queue(), ^{ |