在iPhone上检测NSString中的Unicode字符-DetectUnicodecharactersinNSStringoniPhone

#1

#2

I tried 3 types of encode/decode

我尝试了3种编码/解码

// NSData   *asciiData   = [instruction dataUsingEncoding:NSUTF16BigEndianStringEncoding];                                          
// NSString *asciiString = [[NSString alloc] initWithData:asciiData 
//     encoding:NSUTF16BigEndianStringEncoding];

// NSData   *asciiData   = [instruction dataUsingEncoding:NSASCIIStringEncoding];                                           
// NSString *asciiString = [[NSString alloc] initWithData:asciiData 
//     encoding:NSASCIIStringEncoding];

//little endian
NSData   *asciiData   = [instruction dataUsingEncoding:NSUTF16LittleEndianStringEncoding];                                          
NSString *asciiString = [[NSString alloc] initWithData:asciiData
    encoding:NSUTF16LittleEndianStringEncoding];

none of these worked. They seemed to work as if I NSLog the string it looks ok

这些都没有奏效。他们似乎工作好像我NSLog它看起来不错的字符串

NSLog(@"HAS UNICODE  :%@", instruction); 
..do encode/decode
NSLog(@"UNICODE AFTER:%@", asciiString);

Which output

HAS UNICODE: St/SouthwarkSt  Stop:  BM
UNICODE AFTER: St/SouthwarkSt  Stop:  BM

but I happened to store these in an NSArray and I happened to call [stringArray description] and all the unicode was still in there

但我碰巧将这些存储在NSArray中,我碰巧调用[stringArray description]并且所有的unicode仍然在那里

instructionsArrayString: (
    "Great Guildford St/SouthwarkSt \U00a0Stop:\U00a0 BM",
    "Walk to SE1 0HL"
)

So something in NSLog hides   but it shows up in NSArray description so you may think youve removed the Unicode when you haven't.

所以NSLog中的东西隐藏了 但它出现在NSArray描述中,所以你可能认为你没有删除Unicode。

Will try another method that replace the characters.

将尝试另一种替换字符的方法。