CODEWITHSUNDEEP
objective-curlnsstringcharacter
Sara Canducci
Sara Canducci

Reputation: 6291

Write "special characters" such as "%" in Objective-C

Here's the problem... I need to put together some NSStrings using special characters like "%" or "&". Now here's the code I'm using even though the "%" doesn't show at all:

-(void)getPostingURL:(NSString*)path variablesNames:(NSArray*)names{
    NSString *result = path;
    for (int i=0; i<names.count; i++){
        result = [NSString stringWithFormat:@"%@?%@=&@&",result,names[i]];
    }
    NSLog(result);
}

This is the result I'd like to get: call

[self getPostingURL:@"http://www.myurl.com/middleInteractionPost.php" variablesNames:@[@"name",@"state",@"language"]];

final string

http://www.myurl.com/middleInteractionPost.php?name=%@&state=%@&language=%@

Upvotes: 0

Views: 2473

Answers (2)

nburk
nburk

Reputation: 22731

Use this code:

-(void)getPostingURL:(NSString*)path variablesNames:(NSArray *)names
{
    NSString *result = path;
    result = [result stringByAppendingString:@"?"];
    for (NSString *variableName in names){
       NSString *stringToAppend = [NSString stringWithFormat:@"%@=%%@", variableName];
       result = [result stringByAppendingString:stringToAppend];

       if (![variableName isEqual:[names lastObject]]) {
           result = [result stringByAppendingString:@"&"];
       }
    }
    NSLog(@"%@", result);
}

It will construct and print this string:

http://www.myurl.com/middleInteractionPost.php?name=%@&state=%@&language=%@

Upvotes: 1

Sreejith Bhatt
Sreejith Bhatt

Reputation: 589

The escape code for a percent sign is "%%", so your code should be replaced with "%%" where you want to show "%".

Upvotes: 3

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