ZXing problem when find qr code that does not know

I have a question ... I am using ZXing lib to recognize two types of QRCode (for iphone application) everything works fine .... I use this method to analyze the results:

- (void)zxingController:(ZXingWidgetController*)controller didScanResult:(NSString *)result {

    if([result isEqualToString:@QRCODERESULT_TYPPE_01])
    {
        ...CASE 01
    }
    else if([result开发者_开发技巧 isEqualToString:@QRCODERESULT_TYPPE_02])
    {
        ... CASE 02
    }
}

This code works fine if I find a QRCode type 01 or 02 but when I try with another QRCode not know the controller is still some green squares ... how can I reset the controller when it reads a QRCode I do not care? txy

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Dismiss the qr scanning controller regardless of whether the scanned QR code is the one you want or not.

- (void)zxingController:(ZXingWidgetController*)controller 
          didScanResult:(NSString *)result {

    // always dismiss the qr controller
    [self dismissModalViewControllerAnimated:NO];

    if (qr code is of type 1) {
        // do something if qr 1
    }
    else if (qr code is of type 2) {
        // do something with qr 2
    }
}