从字符串错误地格式化 NSDate
我想从字符串创建 NSDate：
NSString *mostRecentMentionMessageTimestamp = [mostRecentMessage valueForKey:@"updated_at"];
NSLog(@"%@",mostRecentMentionMessageTimestamp);
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *mostRecentMentionDate = [dateFormatter dateFromString:mostRecentMentionMessageTimestamp];
NSLog(@"%@",mostRecentMentionDate);
当我打印字符串时，它是： 2011-11-10T07:22:59Z
在我从字符串创建日期并打印它后，它是 (null)
我做错了什么？
I would like to create an NSDate from a string:
NSString *mostRecentMentionMessageTimestamp = [mostRecentMessage valueForKey:@"updated_at"];
NSLog(@"%@",mostRecentMentionMessageTimestamp);
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *mostRecentMentionDate = [dateFormatter dateFromString:mostRecentMentionMessageTimestamp];
NSLog(@"%@",mostRecentMentionDate);
When I print my string it is:
2011-11-10T07:22:59Z
After I make a date from string and print it, it is (null)
What am I doing wrong?
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评论（3）
您需要设置时区并在日期格式末尾删除
Z。由于您的日期有一个Z，因此它采用 UTC。所以你可以使用：You need to set the time zone and drop the
Zat the end of the date format. Since your date has aZ, it is in UTC. So you can use:格式几乎正确，使用：
解决时区问题使用@Jef add的解决方案：
完整示例代码：
NSLog输出：
The format is almost correct, use:
to solve the time zone issue use the solution by @Jef add:
Full example code:
NSLog output:
您尝试转换为 NSDate 的字符串值不正确。
“2011-11-10T07:22:59Z”
它应该有一个时区差异值来代替“Z”，以使其与日期格式化程序的格式兼容。
例如 2011-11-10T07:22:59+0430
the string value which you are trying to convert to NSDate is incorrect.
"2011-11-10T07:22:59Z"
it should have a timezone difference value in place of "Z" to make it compatible to date formatter's format.
e.g. 2011-11-10T07:22:59+0430