如何用适当的编码中的'\336\362\340'值代表NSString作为普通文本？

问题描述

我看到保存原始的字符数。但是我应该如何将它转换成正常的字符串，以便在UILabel中使用文本？

提前感谢

解决方案

我写了一些代码来迭代和记录所有可能的组合。

起初我在NSString.h中找到了所有可能的编码列表并将其设置为C数组可能的编码：

  int encodings [] = {
 NSASCIIStringEncoding，
 NSNEXTSTEPStringEncoding，
 NSJapaneseEUCStringEncoding，
 NSUTF8StringEncoding，
 NSISOLatin1StringEncoding，
 NSSymbolStringEncoding，
 NSNonLossyASCIIStringEncoding，
 NSShiftJISStringEncoding，
 NSISOLatin2StringEncoding，
 NSUnicodeStringEncoding， 
 NSW WindowsCP1251StringEncoding，
 NSWindowsCP1252StringEncoding，
 NSWindowsCP1253StringEncoding，
 NSWindowsCP1254StringEncoding，
 NSWindowsCP1250StringEncoding，
 NSISO2022JPStringEncoding，
 NSMacOSRomanStringEncoding，
 NSUTF16StringEncoding，
 NSUTF16BigEndianStringEncoding，
 NSUTF16LittleEndianStringEncoding，
 NSUTF32StringEncoding，
 NSUTF32BigEndianStringEncoding，
 NSUTF32LittleEndianStringEncoding 
}; 
  

现在让我们重复一遍并显示所有可能的结果：

  int numberOfEncodings = 23; （int i = 0; i< numberOfEncodings; i ++）
 
 {
 NSLog（@===============％d == ===========，编码[i]）; 
 constchar * asd = [value cStringUsingEncoding：encodings [i]]; 
 if（asd == NULL）{
 NSLog（@asd == NULL）; 
} else {
 for（int j = 0; j< numberOfEncodings; j ++）{
 NSString * str = [NSStringstringWithCString：asd encoding：encodings [j]]; 
 NSLog（@％d：％@，编码[j]，str）; 
} 
} 
} 
  

之后，我查看结果并发现好字符串。这就是全部=）

注意：所有编码都是NSStringEncoding枚举的值。你可以认为你可以从0迭代到编码的数量，而不是定义编码[]数组。但是您不应该这样做，因为编码值不是上升的int。例如NSMacOSRomanStringEncoding = 30，其中一些编码是另一个的别名。而不是更好地定义可能编码的数组。

I got strings like this from audio stream as titles:

I know that this string in russian. And I need to show it correctly in UILabel.I try this:

NSData *data = [value dataUsingEncoding:NSNonLossyASCIIStringEncoding];
NSString *goodValue = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

Now goodValue contains next value:

Number of characters as I see the save with original. But how I should convert it into normal string for using as text in UILabel?

Thanks in advance.

解决方案

I wrote some code for iterating and logging all possible combinations.

At first I found list of all possible encodings in NSString.h and set it to C array of possible encodings:

 int encodings[] = {
    NSASCIIStringEncoding,
    NSNEXTSTEPStringEncoding,
    NSJapaneseEUCStringEncoding,
    NSUTF8StringEncoding,
    NSISOLatin1StringEncoding,
    NSSymbolStringEncoding,
    NSNonLossyASCIIStringEncoding,
    NSShiftJISStringEncoding,
    NSISOLatin2StringEncoding,
    NSUnicodeStringEncoding,
    NSWindowsCP1251StringEncoding,
    NSWindowsCP1252StringEncoding,
    NSWindowsCP1253StringEncoding,
    NSWindowsCP1254StringEncoding,
    NSWindowsCP1250StringEncoding,
    NSISO2022JPStringEncoding,
    NSMacOSRomanStringEncoding,
    NSUTF16StringEncoding,
    NSUTF16BigEndianStringEncoding,
    NSUTF16LittleEndianStringEncoding,
    NSUTF32StringEncoding,
    NSUTF32BigEndianStringEncoding,
    NSUTF32LittleEndianStringEncoding
};

And now let's iterate and show all possible results:

int numberOfEncodings = 23;

for (int i = 0; i < numberOfEncodings; i++) {
    NSLog(@"=============== %d =============", encodings[i]);
    constchar *asd = [value cStringUsingEncoding:encodings[i]];
    if (asd == NULL) {
        NSLog(@"asd == NULL");
    } else {
        for (int j = 0; j < numberOfEncodings; j++) {
            NSString *str = [NSStringstringWithCString:asd encoding:encodings[j]];
            NSLog(@"%d: %@", encodings[j], str);
        }
    }
}

After that I look through results and found good string. That's all =)

note: all encodings are values of NSStringEncoding enum. And you could think that you could iterate from 0 to number of encodings instead of defining encodings[] array. But you shouldn't do this, because encoding values are not ascending ints. For example NSMacOSRomanStringEncoding = 30 and some of this encoding are aliases for another. Than better to define array of possible encodings.

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