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我必須掃描也稱爲GS1-128或ITF-14(http://www.gtin.info/)的GTIN-14條碼。我已經嘗試使用AVFoundation框架添加所有可用的條形碼類型,但它不起作用。iOS中的AVFoundation框架GTIN-14條碼掃描
- (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框架有可能嗎?是否有另一個框架來掃描GTIN-14條形碼?
沒有GTIN-14條碼。 GTIN是一種數據結構,可以在GS1-128,ITF-14或其他條形碼中編碼。 「它不起作用」是什麼意思?你可以發佈一個鏈接到圖像? – tobltobs 2014-11-05 12:10:22
我想你只是沒有將所有支持的條形碼格式添加到你的'barCodeTypes'數組中。 [AVMetadataObjectTypeITF14Code](https://developer.apple.com/documentation/avfoundation/avmetadataobjecttypeitf14code?language=objc)就是你想要的。 ;) – 2018-02-15 13:19:42