Question

如何转换字符串日期@“2016-10-19T12：37：15.0896144 + 00:00”int second / Min / hour / days / months / year。

我有约会创造价值，即@“2016-10-19T12：37：15.0896144 + 00:00”

**几秒后需要显示“50秒”

几分钟后需要显示“40分钟”

几个小时后需要显示@“20小时”

几天后需要展示@“3天”

几个月后需要显示@“4个月”

几年后需要展示@“2年”**

我尝试的是我不工作的。

NSString* format = @"2016-10-19T12:37:15.0896144+00:00";
    // Set up an NSDateFormatter for UTC time zone
NSDateFormatter* formatterUtc = [[NSDateFormatter alloc] init];
[formatterUtc setDateFormat:format];
[formatterUtc setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
    // Cast the input string to NSDate
NSDate* utcDate = [formatterUtc dateFromString:[formatterUtc stringFromDate:timeString]];

    // Set up an NSDateFormatter for the device's local time zone
NSDateFormatter* formatterLocal = [[NSDateFormatter alloc] init];
[formatterLocal setDateFormat:format];
[formatterLocal setTimeZone:[NSTimeZone localTimeZone]];
    // Create local NSDate with time zone difference
NSDate* localDate = [formatterUtc dateFromString:[formatterLocal stringFromDate:utcDate]];
NSTimeInterval seconds = [[NSDate date] timeIntervalSinceDate:localDate];

非常感谢您的意见。

Answer 1

使用NSDateFormatter将字符串转换为日期。然后使用NSDateComponentsFormatter {1}}和maximumUnitCount来包含秒，分钟，小时，天，月和年。

allowedUnits

如果您对NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; dateFormatter.dateFormat = @"yyyy-MM-dd'T'HH:mm:ss.SSSSSSSZ"; dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US_POSIX"]; NSDate *date1 = [dateFormatter dateFromString:@"2016-08-19T12:37:15.0896144+00:00"]; NSDate *date2 = [NSDate date]; // or, if date2 is also from a string, just use that dateFormatter again NSDateComponentsFormatter *componentsFormatter = [[NSDateComponentsFormatter alloc] init]; componentsFormatter.unitsStyle = NSDateComponentsFormatterUnitsStyleFull; componentsFormatter.allowedUnits = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond; componentsFormatter.maximumUnitCount = 1; NSString *string = [componentsFormatter stringFromDate:date1 toDate:date2];设置感到疑惑，请参阅Apple Technical Q&A 1480。

如何从当前日期创建日期值

1 个答案: