文章目录

1. 1. iOS有用的代码

iOS有用的代码

//iOS设置navigation是否可用

self.navigationController.navigationBar.userInteractionEnabled
= YES;

//延迟执行某个方法

[self
performSelector: selector(showSVProgressHUD) withObject:nil
afterDelay:0.2];

//block

UIActivityIndicatorView *spiner = [[UIActivityIndicatorViewalloc]
initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];

        [spiner startAnimating];

        

        self.navigationItem.rightBarButtonItem = [[UIBarButtonItemalloc] initWithCustomView:spiner];

        

        dispatch_queue_t
generatePassQueue = dispatch_queue_create(“passQueue”, NULL);

        dispatch_async(generatePassQueue, ^{

            [selfinitGeneratePassbook];

            dispatch_async(dispatch_get_main_queue(), ^{

                [self initPassbookBtn];

            });

        });

        dispatch_release(generatePassQueue);

    }

//让线程睡眠1秒钟

[NSThreadsleepUntilDate:[NSDatedateWithTimeIntervalSinceNow:1.0f]];