我必须扫描GTIN-14条形码,也称为GS1-128或ITF-14(http://www.gtin.info/)。我已尝试使用AVFoundation框架添加所有可用的条形码类型,但它不起作用。
- (void)startReading
{
NSArray *barCodeTypes = @[AVMetadataObjectTypeUPCECode, AVMetadataObjectTypeCode39Code, AVMetadataObjectTypeCode39Mod43Code,
AVMetadataObjectTypeEAN13Code, AVMetadataObjectTypeEAN8Code, AVMetadataObjectTypeCode93Code, AVMetadataObjectTypeCode128Code,
AVMetadataObjectTypePDF417Code, AVMetadataObjectTypeQRCode, AVMetadataObjectTypeAztecCode];
NSError *error;
AVCaptureDevice *captureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:captureDevice error:&error];
if (!input) {
NSLog(@"%@", [error localizedDescription]);
}
self.captureSession = [[AVCaptureSession alloc] init];
[self.captureSession addInput:input];
AVCaptureMetadataOutput *captureMetadataOutput = [[AVCaptureMetadataOutput alloc] init];
[self.captureSession addOutput:captureMetadataOutput];
[captureMetadataOutput setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
[captureMetadataOutput setMetadataObjectTypes:barCodeTypes];
//[captureMetadataOutput setMetadataObjectTypes:[captureMetadataOutput availableMetadataObjectTypes]];
self.videoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:self.captureSession];
[self.videoPreviewLayer setVideoGravity:AVLayerVideoGravityResizeAspectFill];
[self.videoPreviewLayer setFrame:self.cameraView.layer.bounds];
[self.cameraView.layer addSublayer:self.videoPreviewLayer];
[self.captureSession startRunning];
}
AVFoundation框架可以实现吗?还有另一个框架来扫描GTIN-14条形码吗?