ios – 计时器为3:30分钟,有添加和跳过选项？

概述我是ios中的newbe,所以我想帮助制作一个3:30分钟的计时器,它有两个选项add和skip,它会在计时器到达00:00后消失.请帮助我,我现在处于非常困难的境地. 这是计时器 -(void)updatelable:(NSTimer *)timer { remainingTime=180; for (int i=remainingTime;i==0 ;i--) { 我是ios中的newbe,所以我想帮助制作一个3:30分钟的计时器,它有两个选项add和skip,它会在计时器到达00:00后消失.请帮助我,我现在处于非常困难的境地.

这是计时器

-(voID)updatelable:(NSTimer *)timer {    remainingTime=180;    for (int i=remainingTime;i==0 ;i--) {        NSInteger minutes = floor(*(remainingTime))/ 60;        remainingTime = remainingTime-(minutes*60);        NSInteger seconds = remainingTime;        second.text =[Nsstring stringWithFormat:@"%02ld",seconds];        minute.text =[Nsstring stringWithFormat:@"%02ld",minutes];        timerLabel.text = @"Time up!!";    }    [timer invalIDate];}

解决方法 试试这个

.h文件

{    int counter;    NSTimer timer;}

在.m文件中

- (voID)vIEwDIDLoad {     counter = 210;//total Time     timer = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(targetmethod:) userInfo:nil repeats:YES];         }-(voID)targetmethod:(NSTimer*)timr{     if(counter == 0)     {         [timer invalIDate]         //set label hIDden here after 3:30 minutes     }     //strTime is string containing remaining time     Nsstring *strTime = [self formatTimeFromSeconds:counter];     counter--;}

对于Label文本调用此方法

-(Nsstring *)formatTimeFromSeconds:(int)numberOfSeconds{    int seconds = numberOfSeconds % 60;    int minutes = (numberOfSeconds / 60) % 60;    int hours = numberOfSeconds / 3600;    //we have >=1 hour => example : 3h:25m    if (hours)        return [Nsstring stringWithFormat:@"%dh:%dm:%ds",hours,minutes,seconds];    //we have 0 hours and >=1 minutes => example : 3m:25s    if (minutes)        return [Nsstring stringWithFormat:@"%dm:%ds",seconds];    //we have only seconds example : 25s    return [Nsstring stringWithFormat:@"%ds",seconds];}

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