原文地址:http://blog.sina.com.cn/s/blog_91ff71c0010188u9.htmlhtml
1.NSDateFormatter配合NSDate與NSString之間的轉化
NSDateFormatter有下面2個方法:spa
- (NSString *)stringFromDate:(NSDate *)date;//NSDate轉NSString - (NSDate *)dateFromString:(NSString *)string;//NSString轉NSDate
e.g.
code
NSString *dateString=@"1900-01-01"; NSDateFormatter *dateFormatter=[[NSDateFormatter alloc]init]; [dateFormatter setDateFormat:@"yyyy-MM-dd"]; NSDate *date=[dateFormatter dateFromString:dateString]; [dateFormatter release];
NSString轉NSDate與上面相似component
NSString *dateString=[dateFormatter dateFromString:[NSDate date]];
2.NSDateFormatter 的一些格式介紹orm
[dateFormatter setDateFormat:@"yyyy年MM月dd日#EEEE"];//EEEE爲星期幾,EEE爲周幾 [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; [dateFormatter setDateFormat:@"yyyy年MMMMd日"];//MMMM 爲xx月,一個d能夠省去01日前的0
3.NSString轉NSDate少一天的解決辦法
用下面這種格式化方式 htm
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; NSCalendar *calendar = [NSCalendar currentCalendar]; NSDateComponents *components = [calendar components:(NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit) fromDate:[NSDate date]]; NSDate *todayDate = [calendar dateFromComponents:components];