#import <Foundation/Foundation.h>

@interface TimerManger : NSObject

/**

 结束定时器

 */

- (void)stopTimer;

/**

 开始定时器

 */

- (void)startTimerWithTimeInterVal:(NSTimeInterval)timeInterVal;

/**

 单利

 */

+ (instancetype)shareTimer;

@end

#import "TimerManger.h"

static NSString * TIMER_NOTIFICATION = @"TIMER_NOTIFICATION";

@interface TimerManger ()

/**

 定时器

 */

@property (nonatomic, strong) NSTimer *timer;

@end

@implementation TimerManger

+ (instancetype)shareTimer

{

    static dispatch_once_t onceToken;

    static TimerManger *instance;

    dispatch_once(&onceToken, ^{

        instance = [[TimerManger alloc]init];

    });

    return instance;

}

- (void)startTimerWithTimeInterVal:(NSTimeInterval)timeInterVal

{

    if (_timer) return;

    _timer = [NSTimer timerWithTimeInterval:timeInterVal

                                     target:self

                                   selector:@selector(timerAction:)

                                   userInfo:nil

                                    repeats:YES];

    [[NSRunLoop mainRunLoop] addTimer:_timer

                              forMode:NSRunLoopCommonModes];

}

/**

 定时器调用事件

 @param timer timer

 */

- (void)timerAction:(NSTimer *)timer

{

    [[NSNotificationCenter defaultCenter] postNotificationName:TIMER_NOTIFICATION

                                             object:nil

                                           userInfo:nil];

}

/**

 结束定时器

 */

- (void)stopTimer

{

    [self.timer invalidate];

    self.timer = nil;

}

@end

#import <UIKit/UIKit.h>

@interface TimerTableViewCell : UITableViewCell

/**

 时间差

 */

@property (nonatomic, copy) NSString * diffTimestr;

@end

#import "TimerTableViewCell.h"

#import "TimerManger.h"

@interface TimerTableViewCell ()

@property (nonatomic, assign) double diffTime;

@end

@implementation TimerTableViewCell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier

{

    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {

        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(TimerSelector) name:@"TIMER_NOTIFICATION" object:nil];

    }

    return self;

}

- (void)setDiffTimestr:(NSString *)diffTimestr

{

    _diffTime = [diffTimestr doubleValue];

        if (_diffTime >  ) {

        [[TimerManger shareTimer] startTimerWithTimeInterVal:];

    }

}

- (void)TimerSelector

{

    _diffTime = _diffTime -;

    self.textLabel.text = [NSString stringWithFormat:@"倒计时:%@",[self gettimestrWithdifftime:_diffTime]];

    if (_diffTime <= ) {

        self.textLabel.text = @"倒计时:00:00:00";

    }

}

- (NSString *)gettimestrWithdifftime:(double)difftime

{

    //天数

    NSString *days = [NSString stringWithFormat:@"%02ld", (NSInteger)((difftime)////)];

    //小时数

    NSString *hours = [NSString stringWithFormat:@"%02ld", (NSInteger)((difftime)///)%];

    //分钟数

    NSString *minute = [NSString stringWithFormat:@"%02ld", (NSInteger)((difftime)//)%];

    //秒数

        NSString *second = [NSString stringWithFormat:@"%02ld", ((NSInteger)(difftime))/%];

    return [NSString stringWithFormat:@"%@天%@小时%@分%@",days,hours,minute,second];

}

@end