iphone - 如何从zbar获取条码类型？

Question

在我的应用程序中，Zbar 完美解码。但问题是Zbar可以同时解码二维码和条形码。那么解码后，如何获取Encoding Style的类型呢？

Answer 1

ZBarSymbol 中有类型的返回码。您将寻找用于 QR 码的 ZBAR_QRCODE

ZBarSymbol 文档

像这样的东西应该可以帮助您获取符号：

- (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

我所做的是，

- (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
}