NSDate格式问题 [英] NSDate format issue

问题描述

以下是来自nsdate格式化程序的代码...由于某种原因，值dateSelected不正确...而不是2011年4月30日下午7:55它返回2011-05-01 02:55 ...任何想法我做错了什么？

  NSDateFormatter * outputFormatter = [[NSDateFormatter alloc] init]; 
 [outputFormatter setDateFormat：@h：mm a]; 
 objEventInsert.eventtime = [outputFormatter stringFromDate：self.datePicker.date]; 
 NSLog（@％@，objEventInsert.eventtime）; 
 NSDateFormatter * dateForm = [[NSDateFormatter alloc] init]; 
 [dateForm setDateFormat：@LLLL d y h：mm a]; 
 NSDate * dateSelected = [dateForm dateFromString：[NSString stringWithFormat：@％@％@，objEventInsert.eventstartdate，objEventInsert.eventtime]]; 
 NSLog（@％@，objEventInsert.eventstartdate）; 
 objEventInsert.date = dateSelected; 
 NSLog（@％@，objEventInsert.date）;  

NSLog响应.. 。

  2011-04-30 19：54：14.264 APP [24017：207] 7:55 PM 
 2011 -04-30 19：54：16.216 APP [24017：207] 2011年4月30日
 2011-04-30 19：54：17.654 APP [24017：207] 2011-05-01 02:55:00 +0000 
  

解决方案

这是正确的UTC时间。您需要设置区域设置/时区以获取当地时间，即7:55。

请参阅这些答案示例

• 使用NSDateFormatter 不一致的行为在两个不同的设备上


• NSDate dateFromString，如何解析'围绕'UTC，GMT和用户区域设置？

Here is the code from the nsdate formatter... for some reason the value dateSelected is incorrect... instead of "April 30 2011 7:55PM" it returns 2011-05-01 02:55... any idea what am i doing wrong?

NSDateFormatter *outputFormatter = [[NSDateFormatter alloc] init];
[outputFormatter setDateFormat:@"h:mm a"];
objEventInsert.eventtime  = [outputFormatter stringFromDate:self.datePicker.date];
NSLog(@"%@",objEventInsert.eventtime);
NSDateFormatter *dateForm = [[NSDateFormatter alloc] init];
[dateForm setDateFormat:@"LLLL d y h:mm a"];
NSDate *dateSelected = [dateForm dateFromString:[NSString stringWithFormat:@"%@ %@",objEventInsert.eventstartdate,objEventInsert.eventtime]];
NSLog(@"%@",objEventInsert.eventstartdate);
objEventInsert.date = dateSelected;
NSLog(@"%@",objEventInsert.date);

NSLog response...

2011-04-30 19:54:14.264 APP[24017:207] 7:55 PM
2011-04-30 19:54:16.216 APP[24017:207] April 30 2011
2011-04-30 19:54:17.654 APP[24017:207] 2011-05-01 02:55:00 +0000

解决方案

That's the correct UTC time. You'll need to set the locale/timezone to get the local time, i.e. 7:55.

See these answer examples

• Inconsistent behaviour with NSDateFormatter on two different devices
• NSDate dateFromString, how to parse 'around' UTC, GMT and User locale?

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