How to get the type of bar code from zbar?

Question

In my application, Zbar is decoding perfectly. But the problem is Zbar can decode both QR code and bar code. So after decoding, how do I get the type of Encoding Style?

Answer 1

There are return codes for type in ZBarSymbol. You will be looking for ZBAR_QRCODE for QR codes

ZBarSymbol documentation

Something like this should help you to get the symbol out:

- (void) readerView: (ZBarReaderView*) view didReadSymbols: (ZBarSymbolSet*) syms  fromImage: (UIImage*) img 
{
    //do something useful with results and display resultText in resultViewController
    for(ZBarSymbol *sym in syms) 
    {
        imageResult3.image = img; 
        resultText.text = sym.typeName;
        resultText.text =  [ resultText.text stringByAppendingString:@" - " ];
        resultText.text =  [ resultText.text stringByAppendingString:sym.data ]; 

    }
}

Answer 2

What i did was,

- (void) imagePickerController: (UIImagePickerController*) reader  didFinishPickingMediaWithInfo: (NSDictionary*) info
{
    UIImage *image = [info objectForKey: UIImagePickerControllerOriginalImage];
    ZBarImage *zImage = [[ZBarImage alloc] initWithCGImage:image.CGImage];
    ZBarImageScanner *scanner = [[ZBarImageScanner alloc] init];
    [scanner setSymbology: ZBAR_I25
                        config: ZBAR_CFG_ENABLE
                        to: 0];
    [scanner scanImage:zImage];
    ZBarSymbolSet *set = [scanner results];

    ZBarSymbol *symbol = nil;
    for (symbol in set)
        break;
    codeType.text = symbol.typeName
}