ios – NSDateFormatter：根据currentLocale的日期,不含Year

这不可能太难了

我想显示一个没有一年的日期.例如：“8月2日”(美国)或“02.08”. (德国)
它也适用于一大堆其他地区.

到目前为止我唯一的想法是用一年的正常格式,然后从生成的字符串中删除年份.

解决方法

我想你需要看看：

+ (Nsstring *)dateFormatFromTemplate:(Nsstring *)template options:(NSUInteger)opts locale:(NSLocale *)locale

根据文档：

Returns a localized date format string representing the given date format components arranged appropriately for the specified locale.
Return Value
A localized date format string representing the date format components given in template,arranged appropriately for the locale specified by locale.

The returned string may not contain exactly those components given in template,but may—for example—have locale-specific adjustments applied.

discussion

Different locales have different conventions for the ordering of date components. You use this method to get an appropriate format string for a given set of components for a specified locale (typically you use the current locale—see currentLocale).

The following example shows the difference between the date formats for British and American English:

NSLocale *usLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];
NSLocale *gbLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_GB"];

Nsstring *dateFormat;
// NOTE!!! I removed the 'y' from the example
Nsstring *dateComponents = @"MMMMd";  //@"yMMMMd";

dateFormat = [NSDateFormatter dateFormatFromTemplate:dateComponents options:0 locale:usLocale];
NSLog(@"Date format for %@: %@",[usLocale displayNameForKey:NSLocaleIdentifier value:[usLocale localeIdentifier]],dateFormat);

dateFormat = [NSDateFormatter dateFormatFromTemplate:dateComponents options:0 locale:gbLocale];
NSLog(@"Date format for %@: %@",[gbLocale displayNameForKey:NSLocaleIdentifier value:[gbLocale localeIdentifier]],dateFormat);

// Output:
// Date format for English (United States): MMMM d,y
// Date format for English (United Kingdom): d MMMM y

额外的代码(添加到上面的代码)：

// 
NSDateFormatter * formatter = [[NSDateFormatter alloc] init];
formatter.locale = gbLocale;
formatter.dateFormat = dateFormat;
NSLog(@"date: %@",[formatter stringFromDate: [NSDate date]]);

看这里：
NSDateFormatter Class Reference