iOS实现代码只执行一次
投稿：hebedich
本文给大家分享的是在iOS中控制代码在整个软件生命周期中只运行一次的代码，有需要的小伙伴可以参考下。
iOS实现代码只让执行一次
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self performSelector:@selector(wangmumu:) withObject:@"100" afterDelay:1];
}
- (void) wangmumu:(NSString *)han{
static dispatch_once_t hanwanjie;
//只执行一次
dispatch_once(&hanwanjie, ^{
NSLog(@"12345678910");
});
int niha = [han intValue] - 1;
if (niha == 10) {
return;
}
[self performSelector:@selector(hanwanjie:) withObject:[NSString stringWithFormat:@"%d",niha] afterDelay:1];
}