Methods to encode and decode URLs to replace "/" and "&".

noslashurl.m

// Encode a string to embed in an URL.
+(NSString *)encodeString:(NSString *)string {
    return CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(nil, (CFStringRef)string, nil, (CFStringRef)@"!*'();:@&=+$,/?%#[]", kCFStringEncodingUTF8));
}
 
// Decode a percent escape encoded string.
+(NSString *)decodeString:(NSString *)string {
    return CFBridgingRelease(CFURLCreateStringByReplacingPercentEscapesUsingEncoding(nil, (CFStringRef)string, CFSTR(""), kCFStringEncodingUTF8));
}