- (void)timeChange {
 self.totalSeconds --;
 if (self.totalSeconds < 0) {
   self.timerLabel.text = @"倒计时结束";
  return;
 }
 self.timerLabel.text = [self timeChangeWithSeconds:self.totalSeconds];
}
- (void)setDataDict:(NSDictionary *)dataDict {
 _dataDict = dataDict;
 NSString *totalTime = dataDict[@"totalTime"];
 self.totalSeconds = totalTime.integerValue;
 self.timerLabel.text = [self timeChangeWithSeconds:self.totalSeconds];
 if (!_timer) {
  _timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(timeChange) userInfo:nil repeats:YES];
  [[NSRunLoop currentRunLoop] addTimer:_timer forMode:UITrackingRunLoopMode];
 }
}
- (NSString*)timeChangeWithSeconds:(NSInteger)seconds {
 NSInteger temp1 = seconds/60;
 NSInteger temp2 = temp1/ 60;
 NSInteger d = temp2 / 24;
 NSInteger h = temp2 % 24;
 NSInteger m = temp1 % 60;
 NSInteger s = seconds %60;
 NSString * hour = h< 9 ? [NSString stringWithFormat:@"0%ld",(long)h] :[NSString stringWithFormat:@"%ld",(long)h];
 NSString *day = d < 9 ? [NSString stringWithFormat:@"0%ld",(long)d] : [NSString stringWithFormat:@"%ld",(long)d];
 NSString *minite = m < 9 ? [NSString stringWithFormat:@"0%ld",(long)m] : [NSString stringWithFormat:@"%ld",(long)m];
 NSString *second = s < 9 ? [NSString stringWithFormat:@"0%ld",(long)s] : [NSString stringWithFormat:@"%ld",(long)s];
 return [NSString stringWithFormat:@"%@天:%@时:%@分:%@秒",day,hour,minite,second];
}

- (void)setDataDict:(NSDictionary *)dataDict {
 _dataDict = dataDict;
  if (self.totalSeconds !=0) {
   self.timerLabel.text = [self timeChangeWithSeconds:self.totalSeconds];
 }else {
  NSString *totalTime = dataDict[@"totalTime"];
  self.totalSeconds = totalTime.integerValue;
  self.timerLabel.text = [self timeChangeWithSeconds:self.totalSeconds];
 }
  if (!_timer) {
  _timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(timeChange) userInfo:nil repeats:YES];
  [[NSRunLoop currentRunLoop] addTimer:_timer forMode:UITrackingRunLoopMode];
 }
}

/**定时器触发*/
- (void)timeChange {
 NSMutableArray *tempArrM = [NSMutableArray array];
 for (NSDictionary *dict in self.dataArr) {
  NSString *totalTime = dict[@"totalTime"];
  if ([totalTime isEqualToString:@"0"]) {
    totalTime = @"0";
  }else {
   totalTime = [NSString stringWithFormat:@"%ld",totalTime.integerValue -1];
  }
  [tempArrM addObject:@{@"totalTime":totalTime}];
 }
 self.dataArr = tempArrM;
 [self.pageTableView reloadData];
}

 _timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(timeChange) userInfo:nil repeats:YES];
   [[NSRunLoop currentRunLoop] addTimer:_timer forMode:UITrackingRunLoopMode];