Ios 从字符串转换日期

在我的代码中，我从服务器获取一个字符串，值为“06-27-2014”，然后我想转换为其他日期格式，但最终得到的结果非常不同。这是我使用的代码

        NSString* dateVal = @"06-27-2014";

        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
        [dateFormatter setDateFormat:@"mm-dd-yyyy"];
        NSTimeZone *gmtZone = [NSTimeZone systemTimeZone];
        [dateFormatter setTimeZone:gmtZone];

        NSDate* aDate = [dateFormatter dateFromString:**dateVal**];
           I am getting the aDate as **2014-01-26 18:36:00 +0000** here the month is completely changing to first month from 6th. 

        NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
        [dateFormat setDateStyle:NSDateFormatterShortStyle];

        NSDate *theDateSelected =aDate;

        NSString *theDate = [dateFormat stringFromDate:theDateSelected];

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我得到的最后日期是2014年1月27日，这是完全不同的。任何人都可以建议正确的日期格式。

您的日期格式是错误的，这个月应该是

MM

<代码>毫米用于分钟

[dateFormatter setDateFormat:@"mm-dd-yyyy"];

应该是

[dateFormatter setDateFormat:@"MM-dd-yyyy"];

---

您的格式字符串错误

[dateFormatter setDateFormat:@"MM-dd-yyyy"];

    NSString* dateVal = @"06-27-2014";

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"MM-dd-yyyy"];
    NSTimeZone *gmtZone = [NSTimeZone systemTimeZone];
    [dateFormatter setTimeZone:gmtZone];

    NSDate* aDate = [dateFormatter dateFromString:dateVal];// Now here you will get date like "06-27-2014", and mm is for minutes, you should use MM for month.

    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateStyle:NSDateFormatterShortStyle];

    NSDate *theDateSelected =aDate;

    NSString *theDate = [dateFormat stringFromDate:theDateSelected];

m代表分钟， M代表一个月

---

始终检查引用；-）

这里，您的日期格式化程序值似乎有误

[dateFormatter setDateFormat:@"MM-dd-yyyy"];

    NSString* dateVal = @"06-27-2014";

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"MM-dd-yyyy"];
    NSTimeZone *gmtZone = [NSTimeZone systemTimeZone];
    [dateFormatter setTimeZone:gmtZone];

    NSDate* aDate = [dateFormatter dateFromString:dateVal];// Now here you will get date like "06-27-2014", and mm is for minutes, you should use MM for month.

    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateStyle:NSDateFormatterShortStyle];

    NSDate *theDateSelected =aDate;

    NSString *theDate = [dateFormat stringFromDate:theDateSelected];

---

首选的格式是什么？你没提过。另外，您为什么要使用

**…**

来命名

NSString

？***NSString*dateVal=@“06-27-2014”***它的格式不正确。。