How to convert string to base64 encoding in iOS 6.1

Question

I am converting string to base64 encoded in iOS 7 and its working fine,but when application is running in iOS 6.1 application get crashed.for iOS 7, I am using :

NSData *decodedData = [[NSData alloc] initWithBase64EncodedString:pdfDataString options:0];

in iOS 6 my application get crashed on this line.Please help me.How can i convert string to Base64 encoded in iOS 6.

Answer 1

You can use this method... or you can use it like reference :)

- (NSString*)encodeStringTo64:(NSString*)fromString
{  
    NSData *plainData = [fromString dataUsingEncoding:NSUTF8StringEncoding];
    NSString *base64String;
    if ([plainData respondsToSelector:@selector(base64EncodedStringWithOptions:)]) {
        base64String = [plainData base64EncodedStringWithOptions:kNilOptions];  // iOS 7+
    } else {
        base64String = [plainData base64Encoding];                              // pre iOS7
    }

    return base64String;
}