重置定时器

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我是靠谱客的博主糊涂金毛，这篇文章主要介绍重置定时器，现在分享给大家，希望可以做个参考。

使用简单的操作，设置计时器

复制代码

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- (IBAction)timerStart:(id)sender {

if(!secondCounter == 0){
        [countdownTimer invalidate];
    }
    else {
           [self setTimer];
     }
}

计时器的代码

复制代码

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- (void)timerRun {
    secondCounter = secondCounter - 1;
    int minutes = secondCounter;

    NSString *timerOutput = [NSString stringWithFormat:@"%d", minutes ];
    countDownLabel.text = timerOutput;

    if(secondCounter == 0){
        [countdownTimer invalidate];
        countdownTimer = nil;
    }
}

- (void)setTimer {
    secondCounter = 60;
    countdownTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(timerRun) userInfo:nil repeats:YES];

}