1
2
3
4
5
6

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:3 target:self selector:@selector(calledMethods:) userInfo:nil repeats:YES];
// 每3秒调用一次方法
- (void)calledMethods:(id)timer
{
      // 循环内容
}

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:3 target:self selector:@selector(calledMethods:) userInfo:nil repeats:YES]; // 每3秒调用一次方法 - (void)calledMethods:(id)timer { // 循环内容 }

1

timer.fireDate = [NSDate distantFuture];

timer.fireDate = [NSDate distantFuture];

1

timer.fireDate = [NSDate date];

timer.fireDate = [NSDate date];

1

[timer  invalidate];

[timer invalidate];