- (void)viewDidLoad {
NSLog(@"1");
[super viewDidLoad];
//不阻塞当前主线程执行
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"3");
});
NSLog(@"2");
}
打印按1-2-3顺序
- (void)viewDidLoad {
NSLog(@"1");
[super viewDidLoad];
//不阻塞当前主线程执行
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"3");
});
NSLog(@"2");
}
打印按1-2-3顺序
dispatch_async 异步执行 dispatch_async(dispatch_get_global_qu...
dispatch_async(主队列除外都会创建新线程) dispatch_async(dispatch_queu...
dispatch_async 不会阻塞当前线程 dispatch_async 会阻塞当前线程，一直等到它提交的任务...
dispatch_async底层 dispatch_async的源码不多,接下来我们要探索两个方面: 子线程创建的...
dispatch_async经常应用于我们日常开发中,一提到dispatch_async我们想到的是多线程或者异步...
dispatch_async Declaration Parameters queue block Discussion
dispatch_async(dispatch_get_main_queue(), ^{ });
- (void)viewDidLoad { dispatch_async(dispatch_get_global_...
检查应用 - (void)___checkVersion { dispatch_async(dispatch_...
本文标题： dispatch_async
本文链接：https://www.haomeiwen.com/subject/fclhsttx.html
网友评论