iOS实现代码只让执行一次
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- (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];
}
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