iOS 封装一个Model 处理返回时间

在项目开发中从服务器中请求下来的时间想要处理

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创建 Time 类 继承NSObject

Time.h
#import <Foundation/Foundation.h>

@interface Time : NSObject
// 处理后返回
+ (NSString *)handleDate:(NSString *)dateString;
// 从服务器请求下来的
+ (NSString *)timeIntervalToDate:(NSString *)timeinterval;
@end

---

Time.m

#import "Time.h"

@implementation Time

/*
 传入时间与现在时间差距在60秒以内，输出@“刚刚”
 1个小时以内，输出@“**分钟前”
 差距1-24小时以内，输出@“**小时前”
 差距24小时到48小时，输出昨天
  差距大于48小时，输出@“完整日期”
 */

// 处理后返回
+ (NSString *)handleDate:(NSString *)dateString {

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];

NSDate *date = [dateFormatter dateFromString:dateString];

NSTimeInterval timeInterval = date.timeIntervalSinceNow;
double time = -(timeInterval - 28800);
NSString *backString;
if (time < 60 && time > 0) {
    backString = @"刚刚";
} else if (time > 60 && time < 3600 ) {
    int Minute = time / 60;
    backString = [NSString stringWithFormat:@"%d 分钟前",Minute];
    
} else if (time > 3600 && time < 86400) {
    int Hour = time / 3600;
    backString = [NSString stringWithFormat:@"%d 小时前",Hour];
    
} else if (time > 86400 && time < 172800) {
   
    backString = [NSString stringWithFormat:@"昨天"];
    
} else if (time > 172800) {
    dateFormatter.dateFormat = @"MM-dd HH:mm";
    backString = [dateFormatter stringFromDate:date];
}


return backString;
}


// 从服务器请求下来的
+ (NSString *)timeIntervalToDate:(NSString *)timeinterval {

NSTimeInterval time = [timeinterval doubleValue]; //因为时差问题要加8小时 == 28800 sec
NSDate *detailDate = [NSDate dateWithTimeIntervalSince1970:time];

//实例化一个NSDateFormatter对象
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

//设定时间格式,这里可以设置成自己需要的格式
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];

NSString *currentDateStr = [dateFormatter stringFromDate:detailDate];

return currentDateStr;
}

@end

调用

//时间
NSString * date = [Time timeIntervalToDate:model.addtime];
        
cellb.time.text = [Time handleDate:date];