Question

更新iPad版本8.3之后的日期格式问题代码返回NIL值但在模拟器和iPod中工作正常

-(NSString *)dateFormat:(NSString *)str{
  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];      
  [dateFormatter setDateFormat:@"yyyy/mm/dd HH:mm:ss zzz"];
  NSDate *dateFromString = [[NSDate alloc] init];
  dateFromString = [dateFormatter dateFromString:str];

 //problem here when i call this method from simulator and ipod it runs  perfectly
 //and returns  2015-01-27 00:27:48 +0000 but in case of IPad(iOS 8.3) it return NIL

NSDateFormatter* df = [[NSDateFormatter alloc] init];
[df setDateStyle:NSDateFormatterMediumStyle];
[df setTimeStyle:NSDateFormatterShortStyle];
NSString* myString = [df stringFromDate:dateFromString];
return myString;
}

//code to call above method with date string which are return from web service
[self dateFormat:@"2015/01/26 16:27:48 PST"];

Answer 1

检查输入字符串日期格式。
它应采用以下格式： - yyyy/MM/dd HH:mm:ss zzz

Answer 2

您应该检查ipad日期和时间设置。要将字符串，2015/01/26 16:27:48转换为日期，ipad日期和时间格式必须为24小时。

Answer 3

月份由'MM'表示，而不是'mm'。将日期格式更改为

[dateFormatter setDateFormat:@"yyyy/MM/dd HH:mm:ss zzz"];

更新iPad版本8.3后的日期格式问题

3 个答案: