摘要:
UIGraphicsBeginImageContext(image1.size); [image1 drawInRect:CGRectMake(0, 0, image1.size.width, image1.size.height)]; [image2 drawInRe... 阅读全文
摘要:
//会卡住主线程[NSThread sleepForTimeInterval:时间(秒)];//定制延迟任务后,不会卡主线程,在主线程执行[self performSelector:@selector(方法名) withObject:方法参数 afterDelay:时间(秒)];//GCD延迟执行d... 阅读全文