iOS 在每一个cell上添加一个定时器的方案

1 首先创建一个数组，用来创建所有的定时器的时间

- (NSMutableArray *)totalLastTime
{
    if (!_totalLastTime) {
        _totalLastTime = [NSMutableArray array];
    }
    return _totalLastTime;
}

2 当从网络请求过来时间之后，循环遍历，行数和时间作为Key，将值作为value放进字典中放进数组

            // 所有剩余的时间  lastTime
            for (int i = 0; i < strongSelf.bigModel.activeTeamList.count; i ++) {
                NSDictionary *dic = strongSelf.bigModel.activeTeamList[i];
                
                NSDate *date = [SKTool changeTimeStringtoDate:dic[@"EndTime"]];
                
                double time =  [date timeIntervalSinceDate:[NSDate date]];
                
                NSMutableDictionary *para = [NSMutableDictionary dictionary];
                [para setValue:@(i) forKey:@"row"];
                [para setValue:[NSNumber numberWithDouble:time] forKey:@"lastTime"];
                [self.totalLastTime addObject:para];
            }
            

3 没定时器更新的方法中去取出row 和 时间，更新到cell 上面去，然后再将更新过的时间更新到数组中去。

- (void)refreshLessTime {
    
    NSUInteger time;
    
    for (int i = 0; i < self.totalLastTime.count; i++) {
        
        time = [[[self.totalLastTime objectAtIndex:i] objectForKey:@"lastTime"]integerValue];
        
        NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[[[self.totalLastTime objectAtIndex:i] objectForKey:@"row"] integerValue] inSection:1];
    
        BaoPinCellA *cell = (BaoPinCellA *)[self.tableView cellForRowAtIndexPath:indexPath];
        cell.timeLbL.text = [NSString stringWithFormat:@"剩余:%@",[self lessSecondToDay:--time]];
        NSDictionary *dic = @{@"row": [NSString stringWithFormat:@"%li",(long)indexPath.row],@"lastTime": [NSString stringWithFormat:@"%lu",(unsigned long)time]};
        [self.totalLastTime replaceObjectAtIndex:i withObject:dic];
    }
}