Iphone NSDateFormatter-SetDateFormat

我有一个文本字段，用户可以在其中以这种格式插入日期和时间： MMDDHHMM（11230530），我希望标签设置为11月23日上午5时30分。 我试过：

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但我从数据中得到了空值。有什么线索吗？

以这种方式使用此代码

NSDate *data = [NSDate stringWithFormat:@"%@", [date text]];];
NSDateFormatter *dateFormatter =[[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"MMdd hh:mm"];

NSDate *dateFromString = [dateFormatter dateFromString:data];
NSLog(@"%@", dateFromString);

希望能有所帮助。

使用此代码

NSString *date = [NSString stringWithFormat:@"11230530"];
NSDateFormatter *dateFormatter =[[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"MMddHHmm"];

NSDate *dateFromString = [dateFormatter dateFromString:date];
NSLog(@"%@", dateFromString);
[dateFormatter release];

dateFormatter =[[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"dd MMMM' at 'hhmm a"];
NSString *stringFromDate=[dateFormatter stringFromDate:dateFromString];
//Use this text to display in that textfield
[dateFormatter release];

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@KingofBlis我用过这个[dateFormatter setDateFormat:@“dd MMM”at'hhmm a'；而且它也有效。谢谢

NSString *date = [NSString stringWithFormat:@"11230530"];
NSDateFormatter *dateFormatter =[[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"MMddHHmm"];

NSDate *dateFromString = [dateFormatter dateFromString:date];
NSLog(@"%@", dateFromString);
[dateFormatter release];

dateFormatter =[[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"dd MMMM' at 'hhmm a"];
NSString *stringFromDate=[dateFormatter stringFromDate:dateFromString];
//Use this text to display in that textfield
[dateFormatter release];