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嘿,我的日期是“2010 年 7 月 30 日”。我如何仅将其打印为月份和日期,即。“7/30”我尝试使用 NSFormatter,但它打印的是我当前的日期,而不是我的数据库中存在的日期。

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2 回答 2

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您可以.NSDate

这是一个示例标题:

@interface NSDate (Utilities)

+ (NSDate *) customDateForString:(NSString *)dateString;
+ (NSDateFormatter *) customDateFormatter;

@end

实施:

@implementation NSDate (Utilities)

static NSDateFormatter *customDateFormatter = nil;

+ (NSDateFormatter *) customDateFormatter {
    // Example: 7/30
    if (!customDateFormatter) {
        customDateFormatter = [[NSDateFormatter alloc] init];
        [customDateFormatter setFormatterBehavior:NSDateFormatterBehavior10_4];
        [customDateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"en_US"] autorelease]];

        // cf. http://unicode.org/reports/tr35/tr35-6.html#Date_Format_Patterns
        [customDateFormatter setDateFormat:@"M/d"];
    }  
    return customDateFormatter;
}

+ (NSDate *) customDateForString:(NSString *)dateString {
    return [[self customDateFormatter] dateFromString:dateString];
}

@end

每当您需要解析日期字符串时,您都可以这样称呼它:

NSLog(@"Parsed date: %@", [NSDate customDateForString:@"7/30/2010"]); // Parsed date: 7/30
于 2010-07-30T10:50:27.347 回答
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NSDate *date = dateFromYourDataBase;
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"M/dd"];
NSLog(@"%@", [formatter stringFromDate:date]);
[formatter release];
于 2010-07-30T11:00:41.317 回答