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This code shows correctly as Ecole with an accent on E:

NSString *test = @"\u00c9cole";
cell.detailTextLabel.text = test;

But when I get the string from my server sent as Json, I don't see E with an accent but rather the unicode \u00c9.

Code for getting Json string from server:

- (void) handleProfileDidDownload: (ASIHTTPRequest*) theRequest
{
    NSMutableString *str = [[NSMutableString alloc] init];
    [str setString:[theRequest responseString]];
    [self preprocess:str]; //NSLog here shows  str has the unicode characters \u00c9

}

- (void) preprocess: (NSMutableString*) str 
    {
    [str replaceOccurrencesOfString:@"\n" withString:@"" options:NSLiteralSearch range:NSMakeRange(0, [str length])];
    [str replaceOccurrencesOfString:@"\"" withString:@"" options:NSCaseInsensitiveSearch range:NSMakeRange(0, [str length])];
    [str replaceOccurrencesOfString:@"\\/" withString:@"/" options:NSCaseInsensitiveSearch range:NSMakeRange(0, [str length])];

}

Now if I do,

cell.detailTextLabel.text = str;

I don't get the accent for E rather \u00c9

What am I doing wrong?

Vadim Kotov
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mbh
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2 Answers2

1
NSString *test = @"\u00c9cole";

is converted by the complier to the accented E.

In your JSON, the string \u00c9cole is a literal backslash-u-zero-zero-c-nine.

You can get the same behavior by escaping the backslash.

NSString *test2 = @"\\u00c9cole";

This will give you the same bad result, \u00c9cole.

To correctly unescape the JSON string, see Using Objective C/Cocoa to unescape unicode characters, ie \u1234.

I'm providing the link instead of an answer because there are three decent answers. You can choose the best one for your needs.

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Jeffery Thomas
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0

NSLog here shows str has the unicode characters \u00c9

From that, you can know that the JSON you receive doesn't actually have the letter É inside but the escape sequence \u00c9. So, you need to somehow unescape this string:

CFMutableStringRef mutStr = (CFMutableStringRef)[str mutableCopy];
CFRange rng = { 0, [mutStr length] };
CFStringTransform(mutStr, &rng, CFSTR("Any-Hex/Java"), YES);

Then you can use mutStr in your code.