堆栈内存溢出
  繁体   English   中英

如何在Objective-C中格式化日期，类似于jquery.timeago库？

[英]How can I format a date in Objective-C similar to the jquery.timeago library?

 原文  2011-10-18 15:37:51  2   9    iphone/ objective-c/ ios/ nsdate

问题描述

我有一个表格单元格中显示的项目，其中一部分是过去的日期/时间戳。

在Objective-C中，如何以与网络上的jquery.timeago插件相同的方式完成格式化？

也就是说，接受日期并输出如下内容：

  • '现在'
  • '2分钟前'
  • '24天前'
  • '一个月前'

我看到这里有一个NSDate扩展类，其中包含dateWithDaysBeforeNow，dateWithMinutesBeforeNow等方法，但如果有一个已经完成此操作的库，我将使用它。

编辑：除此之外，如果某人编写了一个方法（接受一个日期，返回一个字符串）来实现这一点，无论是使用这个链接的扩展库还是其他方法，我都会给他们答案。

EDIT 2 Bounty适用于任何可以在Objective-C中编写模糊日期算法的人。

9 个解决方案

解决方案1
 14 已采纳  2011-11-25 12:06:53

创建静态类方法： 

+ (NSString *)stringForTimeIntervalSinceCreated:(NSDate *)dateTime serverTime:(NSDate *)serverDateTime{
    NSInteger MinInterval;
    NSInteger HourInterval;
    NSInteger DayInterval;
    NSInteger DayModules;   

    NSInteger interval = abs((NSInteger)[dateTime timeIntervalSinceDate:serverDateTime]);
    if(interval >= 86400)    
    {
        DayInterval  = interval/86400;
        DayModules = interval%86400;
        if(DayModules!=0)
        {
            if(DayModules>=3600){
                //HourInterval=DayModules/3600;
                return [NSString stringWithFormat:@"%i days", DayInterval];
            }
            else {
                if(DayModules>=60){
                    //MinInterval=DayModules/60;
                    return [NSString stringWithFormat:@"%i days", DayInterval];
                }
                else {
                    return [NSString stringWithFormat:@"%i days", DayInterval];
                }
            }
        }
        else 
        {
        return [NSString stringWithFormat:@"%i days", DayInterval];
        }

    }

    else{

        if(interval>=3600)
        {

            HourInterval= interval/3600;
            return [NSString stringWithFormat:@"%i hours", HourInterval];

        }

        else if(interval>=60){

            MinInterval = interval/60;

            return [NSString stringWithFormat:@"%i minutes", MinInterval];
        }
        else{
            return [NSString stringWithFormat:@"%i Sec", interval];
        }

    }

}

解决方案2
 6  2011-12-01 14:25:22

好吧，我昨晚无法入睡 - 猜我会咬人。 这是jQuery的timeAgo的line-for-line端口，其中包含原始JavaScript源代码以供参考。 使用标准的ObjC / AppKit机制进行用户默认和本地化。 显然忽略了与Web相关的东西，比如更新现有的DOM元素。 还省略了可以在设置中放置函数的机制，因为这是一种特定于JavaScript的。 无需再费周折：

头文件： 

//
//  NSDate+JQTimeAgoAdditions.h
//  JQTimeAgo
//

#import <Foundation/Foundation.h>

@interface NSDate (JQTimeAgoAdditions)

- (NSString*)timeAgo;

@end

extern NSString* const kJQTimeAgoAllowFutureKey;
extern NSString* const kJQTimeAgoStringsPrefixAgoKey;
extern NSString* const kJQTimeAgoStringsPrefixFromNowKey;
extern NSString* const kJQTimeAgoStringsSuffixAgoKey;
extern NSString* const kJQTimeAgoStringsSuffixFromNowKey;
extern NSString* const kJQTimeAgoStringsSecondsKey;
extern NSString* const kJQTimeAgoStringsMinuteKey;
extern NSString* const kJQTimeAgoStringsMinutesKey;
extern NSString* const kJQTimeAgoStringsHourKey;
extern NSString* const kJQTimeAgoStringsHoursKey;
extern NSString* const kJQTimeAgoStringsDayKey;
extern NSString* const kJQTimeAgoStringsDaysKey;
extern NSString* const kJQTimeAgoStringsMonthKey;
extern NSString* const kJQTimeAgoStringsMonthsKey;
extern NSString* const kJQTimeAgoStringsYearKey;
extern NSString* const kJQTimeAgoStringsYearsKey;
extern NSString* const kJQTimeAgoStringsNumbersKey;

和实施文件： 

//
//  NSDate+JQTimeAgoAdditions.m
//  JQTimeAgo
//

#import "NSDate+JQTimeAgoAdditions.h"

@implementation NSDate (JQTimeAgoAdditions)

- (NSString*)timeAgo
{
    NSTimeInterval distanceMillis = -1000.0 * [self timeIntervalSinceNow];
//        inWords: function(distanceMillis) {
//            var $l = this.settings.strings;
    NSUserDefaults* defs = [NSUserDefaults standardUserDefaults];
//            var prefix = $l.prefixAgo;
    NSString* prefix = [defs stringForKey: kJQTimeAgoStringsPrefixAgoKey];
//            var suffix = $l.suffixAgo;
    NSString* suffix = [defs stringForKey: kJQTimeAgoStringsSuffixAgoKey];
//            if (this.settings.allowFuture) {
    if ([defs boolForKey: kJQTimeAgoAllowFutureKey])
    {
//                if (distanceMillis < 0) {
        if (distanceMillis < 0.0) 
        {
//                    prefix = $l.prefixFromNow;
            prefix = [defs stringForKey: kJQTimeAgoStringsPrefixFromNowKey];
//                    suffix = $l.suffixFromNow;
            suffix = [defs stringForKey: kJQTimeAgoStringsSuffixFromNowKey];
//                }
        }
//                distanceMillis = Math.abs(distanceMillis);
        distanceMillis = fabs(distanceMillis);            
//            }
    }
//            
//            var seconds = distanceMillis / 1000;
    const double seconds = distanceMillis / 1000.0;
//            var minutes = seconds / 60;
    const double minutes = seconds / 60.0;
//            var hours = minutes / 60;
    const double hours = minutes / 60.0;
//            var days = hours / 24;
    const double days = hours / 24.0;
//            var years = days / 365;
    const double years = days / 365.0;
//            
//            function substitute(stringOrFunction, number) { ... }
    // Use stringWithFormat, etc.
//            
//            var words = seconds < 45 && substitute($l.seconds, Math.round(seconds)) ||
    NSString* words = nil;
    if (seconds < 45)
        words = [[defs stringForKey: kJQTimeAgoStringsSecondsKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)round(seconds)]];
//            seconds < 90 && substitute($l.minute, 1) ||
    else if (seconds < 90)
        words = [[defs stringForKey: kJQTimeAgoStringsMinuteKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)1]];

//            minutes < 45 && substitute($l.minutes, Math.round(minutes)) ||
    else if (minutes < 45)
        words = [[defs stringForKey: kJQTimeAgoStringsMinutesKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)round(minutes)]];

//            minutes < 90 && substitute($l.hour, 1) ||
    else if (minutes < 90)
        words = [[defs stringForKey: kJQTimeAgoStringsHourKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)1]];

//            hours < 24 && substitute($l.hours, Math.round(hours)) ||
    else if (hours < 24)
        words = [[defs stringForKey: kJQTimeAgoStringsHoursKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)round(hours)]];

//            hours < 48 && substitute($l.day, 1) ||
    else if (hours < 48)
        words = [[defs stringForKey: kJQTimeAgoStringsDayKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)1]];
//            days < 30 && substitute($l.days, Math.floor(days)) ||
    else if (days < 30)
        words = [[defs stringForKey: kJQTimeAgoStringsDaysKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)floor(days)]];

//            days < 60 && substitute($l.month, 1) ||
    else if (days < 60)
        words = [[defs stringForKey: kJQTimeAgoStringsMonthKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)1]];

//            days < 365 && substitute($l.months, Math.floor(days / 30)) ||
    else if (days < 365)
        words = [[defs stringForKey: kJQTimeAgoStringsMonthsKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)floor(days/30.0)]];

//            years < 2 && substitute($l.year, 1) ||
    else if (years < 2)
        words = [[defs stringForKey: kJQTimeAgoStringsYearKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)1]];
//            substitute($l.years, Math.floor(years));
    else
        words = [[defs stringForKey: kJQTimeAgoStringsYearsKey] stringByReplacingOccurrencesOfString: @"%d" withString: [NSString stringWithFormat: @"%d", (int)floor(years)]];
//            
//            return $.trim([prefix, words, suffix].join(" "));
    NSString* retVal = [[NSString stringWithFormat: @"%@ %@ %@", 
                         (prefix ? prefix : @""),
                         (words ? words : @""),
                         (suffix ? suffix : @"")] stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
    return retVal;
//        },
}

// Load settings
+ (void)load
{    
    // Frameworks are guaranteed to be loaded by now so we can use NSDictionary, etc...
    // See here for details: http://www.mikeash.com/pyblog/friday-qa-2009-05-22-objective-c-class-loading-and-initialization.html
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        @autoreleasepool 
        {
            NSDictionary* settings = [NSDictionary dictionaryWithObjectsAndKeys:
                                      [NSNumber numberWithBool: NO], kJQTimeAgoAllowFutureKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsPrefixAgoKey, nil, [NSBundle mainBundle], @" ", @"kJQTimeAgoStringsPrefixAgoKey"), kJQTimeAgoStringsPrefixAgoKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsPrefixFromNowKey, nil, [NSBundle mainBundle], @" ", @"kJQTimeAgoStringsPrefixFromNowKey"), kJQTimeAgoStringsPrefixFromNowKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsSuffixAgoKey, nil, [NSBundle mainBundle], @"ago", @"kJQTimeAgoStringsSuffixAgoKey"), kJQTimeAgoStringsSuffixAgoKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsSuffixFromNowKey, nil, [NSBundle mainBundle], @"from now", @"kJQTimeAgoStringsSuffixFromNowKey"), kJQTimeAgoStringsSuffixFromNowKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsSecondsKey, nil, [NSBundle mainBundle], @"less than a minute", @"kJQTimeAgoStringsSecondsKey"), kJQTimeAgoStringsSecondsKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsMinuteKey, nil, [NSBundle mainBundle], @"about a minute", @"kJQTimeAgoStringsMinuteKey"), kJQTimeAgoStringsMinuteKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsMinutesKey, nil, [NSBundle mainBundle], @"%d minutes", @"kJQTimeAgoStringsMinutesKey"), kJQTimeAgoStringsMinutesKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsHourKey, nil, [NSBundle mainBundle], @"about an hour", @"kJQTimeAgoStringsHourKey"), kJQTimeAgoStringsHourKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsHoursKey, nil, [NSBundle mainBundle], @"about %d hours", @"kJQTimeAgoStringsHoursKey"), kJQTimeAgoStringsHoursKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsDayKey, nil, [NSBundle mainBundle], @"about a day", @"kJQTimeAgoStringsDayKey"), kJQTimeAgoStringsDayKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsDaysKey, nil, [NSBundle mainBundle], @"%d days", @"kJQTimeAgoStringsDaysKey"), kJQTimeAgoStringsDaysKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsMonthKey, nil, [NSBundle mainBundle], @"about a month", @"kJQTimeAgoStringsMonthKey"), kJQTimeAgoStringsMonthKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsMonthsKey, nil, [NSBundle mainBundle], @"%d months", @"kJQTimeAgoStringsMonthsKey"), kJQTimeAgoStringsMonthsKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsYearKey, nil, [NSBundle mainBundle], @"about a year", @"kJQTimeAgoStringsYearKey"), kJQTimeAgoStringsYearKey,
                                      NSLocalizedStringWithDefaultValue(kJQTimeAgoStringsYearsKey, nil, [NSBundle mainBundle], @"%d years", @"kJQTimeAgoStringsYearsKey"), kJQTimeAgoStringsYearsKey,
                                      nil];


            [[NSUserDefaults standardUserDefaults] registerDefaults: settings];
        }
    });
}

@end

NSString* const kJQTimeAgoAllowFutureKey = @"kJQTimeAgoAllowFutureKey";
NSString* const kJQTimeAgoStringsPrefixAgoKey = @"kJQTimeAgoStringsPrefixAgoKey";
NSString* const kJQTimeAgoStringsPrefixFromNowKey = @"kJQTimeAgoStringsPrefixFromNowKey";
NSString* const kJQTimeAgoStringsSuffixAgoKey = @"kJQTimeAgoStringsSuffixAgoKey";
NSString* const kJQTimeAgoStringsSuffixFromNowKey = @"kJQTimeAgoStringsSuffixFromNowKey";
NSString* const kJQTimeAgoStringsSecondsKey = @"kJQTimeAgoStringsSecondsKey";
NSString* const kJQTimeAgoStringsMinuteKey = @"kJQTimeAgoStringsMinuteKey";
NSString* const kJQTimeAgoStringsMinutesKey = @"kJQTimeAgoStringsMinutesKey";
NSString* const kJQTimeAgoStringsHourKey = @"kJQTimeAgoStringsHourKey";
NSString* const kJQTimeAgoStringsHoursKey = @"kJQTimeAgoStringsHoursKey";
NSString* const kJQTimeAgoStringsDayKey = @"kJQTimeAgoStringsDayKey";
NSString* const kJQTimeAgoStringsDaysKey = @"kJQTimeAgoStringsDaysKey";
NSString* const kJQTimeAgoStringsMonthKey = @"kJQTimeAgoStringsMonthKey";
NSString* const kJQTimeAgoStringsMonthsKey = @"kJQTimeAgoStringsMonthsKey";
NSString* const kJQTimeAgoStringsYearKey = @"kJQTimeAgoStringsYearKey";
NSString* const kJQTimeAgoStringsYearsKey = @"kJQTimeAgoStringsYearsKey";
NSString* const kJQTimeAgoStringsNumbersKey = @"kJQTimeAgoStringsNumbersKey";

解决方案3
 4  2011-11-24 17:11:27

我写了一个NSDate类别，以人类可读的格式返回时间增量（例如，“4周，2天”）。 您可以在此处下载并根据您的需要进行调整： https ： //github.com/chriscdn/RHTools （查找NSDate + timesince）。

解决方案4
 3  2013-12-10 04:14:53

我知道这是旧的，但这是我做的，这很简单...... 

NSDate *placeDate = [object createdAt];
NSTimeInterval timeSince = [placeDate timeIntervalSinceNow];
NSLog(@"%f", timeSince);

if (timeSince > -60) {
cell.date.text = [NSString stringWithFormat:@"%f seconds ago", -timeSince];
}
else if (timeSince <= -60 && timeSince > -3600){
    cell.date.text = [NSString stringWithFormat:@"%.0f minutes ago", -timeSince/60];
}
else if (timeSince <= -3600 && timeSince > -86400){
    cell.date.text = [NSString stringWithFormat:@"%.0f hours ago", -timeSince/60/60];
}
else if (timeSince <= -86400 && timeSince > -604800){
    cell.date.text = [NSString stringWithFormat:@"%.0f days ago", -timeSince/24/60/60];
}
else if (timeSince <= -604800 && timeSince > -2592000){
    cell.date.text = [NSString stringWithFormat:@"%.0f weeks ago", -timeSince/7/24/60/60];
}
else if (timeSince <= -2592000 && timeSince > -31536000){
    cell.date.text = [NSString stringWithFormat:@"%.0f months ago", -timeSince/30/24/60/60];
}
else {
    cell.date.text = [NSString stringWithFormat:@"%.1f years ago", -timeSince/365/24/60/60];
}

解决方案5
 2  2011-10-18 15:52:30

您可以尝试使用NSDateFormater并自行编写。

如果价值低于一分钟，则立即写入，否则分钟，小时，天等。

解决方案6
 0  2014-01-09 17:53:34

您可以使用NSDate-TimeAgo 。 它可以使用CocoaPods安装在您的项目中。

  1. 将文件添加到项目中 - 手动或通过Cocoapods（pod'NSDate + TimeAgo'）
  2. 使用#import "NSDate+TimeAgo.h"导入标题
  3. 使用库方法timeAgo。

解决方案7
 0  2014-11-21 00:53:40

https://stackoverflow.com/a/8268903/1915957

↑转换swift代码。 

class func stringForTimeIntervalSinceCreated(dateTime :NSDate, serverTime serverDateTime:NSDate) -> String {
    var MinInterval  :Int = 0
    var HourInterval :Int = 0
    var DayInterval  :Int = 0
    var DayModules   :Int = 0

    let interval = abs(Int(dateTime.timeIntervalSinceDate(serverDateTime)))
    if (interval >= 86400) {
        DayInterval = interval/86400
        DayModules = interval%86400
        if (DayModules != 0) {
            if (DayModules>=3600) {
                //HourInterval=DayModules/3600;
                return String(DayInterval) + " days"
            } else {
                if (DayModules >= 60) {
                    //MinInterval=DayModules/60;
                    return String(DayInterval) + " days"
                } else {
                    return String(DayInterval) + " days"
                }
            }
        } else {
            return String(DayInterval) + " days"
        }
    } else {
        if (interval >= 3600) {
            HourInterval = interval/3600
            return String(HourInterval) + " hours"
        } else if (interval >= 60) {
            MinInterval = interval/60
            return String(MinInterval) + " minutes"
        } else {
            return String(interval) + " Sec"
        }
    }
}

解决方案8
 0  2015-02-09 14:08:09

+ (NSString *)changeTime:(NSString *)serverDateTime{
    NSInteger MinInterval;
    NSInteger HourInterval;
    NSInteger DayInterval;
    //NSInteger DayModules;
    NSTimeInterval _interval=[serverDateTime doubleValue];
    NSDate *Serverdate = [NSDate dateWithTimeIntervalSince1970:_interval];
    NSInteger interval = (long)((NSInteger)[[NSDate date] timeIntervalSinceDate:Serverdate]);
    if(interval >= 86400)
    {
        DayInterval  = interval/86400;// no. of days
        if (DayInterval > 14){
            return [NSString stringWithFormat:@"w+"];
        }
        if (DayInterval >= 7 && DayInterval <= 14){
            int diff =  (int)DayInterval / 7;
            return [NSString stringWithFormat:@"%iw",diff];
        }
        return [NSString stringWithFormat:@"%id",(int)DayInterval];
    }
    else{

        if(interval>=3600)
        {

            HourInterval= interval/3600;
            return [NSString stringWithFormat:@"%lih", (long)HourInterval];

        }
        else if(interval>=60){

            MinInterval = interval/60;

            return [NSString stringWithFormat:@"%lim", (long)MinInterval];
        }
        else{
            return [NSString stringWithFormat:@"%lis", (long)interval];
        }
        return @"now";
    }

}

解决方案9
 0  2015-02-09 15:10:08

如果你有日期和时间的问题。 你应该想到这个图书馆

https://github.com/MatthewYork/DateTools

它总是有帮助的！

暂无
暂无

声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

相关问题 如何在Objective-C中正确格式化此日期？ 如何在Objective-C中更改日期格式 如何将系统毫秒转换为objective-c中的Date 在Objective-C中设置日期格式 如何将C ++库链接到Objective-C程序 我可以使用来自Objective-C的Mono库（在iPhone上）吗？ 如何使用Objective-C库连接到iPhone上的RTSP h.264流 如何使用 Objective-C 解析日期字符串 如何在Objective-C中转义斜杠和引号？ Objective-C：如何以全局方式访问字符串变量？
相关标签
 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM