iOS 取消延时执行 performSelector: withObject: afterDelay:

- (void)viewDidLoad {

    [superviewDidLoad];

    // Do any additional setup after loading the view.

    //[self setLayout];

    

    [selfperformSelector:@selector(Test:)withObject:@"参数"afterDelay:1.0];

    [NSObjectcancelPreviousPerformRequestsWithTarget:selfselector:@selector(Test:)object:@"参数"];

    

}

-(void)Test:(NSString *)str

{

   NSLog(@"延时执行正在执行,%@",str);

}

注意事项: 取消延时执行的参数一定要和延时执行的参数是一样的