说实话,这道题给我整的一突突。突然感觉自己不了解GCD了,因此后边的篇幅会好好复习一下
- (void)dispatchLog{
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
NSLog(@"1");
});
NSLog(@"2");
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"3");
});