我正在使用dispatch_after()
并dispatch_get_current_queue()
推迟一种方法.例如,延迟1秒:
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_current_queue(), ^{ [self someMethod]; });
正如dispatch_get_current_queue()
从iOS 6的弃用,是否有任何其他等效的方式来做到这一点,而无需创建为彼此分离方法performSelector:withObject:afterDelay:
?
这里有一个类似的问题,但仍然使用弃用的方式.谢谢!
编辑:
来自Peter Segerblom的回答:
// Without updating UI dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ NSLog(@"Hello World"); }); // updating UI dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{ UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)]; [imageView setBackgroundColor:[UIColor redColor]]; [self.view addSubview:imageView]; });
干杯!