Hi Team,
I'm using AVFoundation AVCaptureMetadataOutput for scan barcode
Here is my code
- (BOOL)startReading {
NSError *error;
AVCaptureDevice *captureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:captureDevice error:&error];
if (!input) {
NSLog(@"%@", [error localizedDescription]);
return NO;
}
m_pCaptureSession = [[AVCaptureSession alloc] init];
[m_pCaptureSession addInput:input];
m_pCaptureSession.sessionPreset = AVCaptureSessionPresetHigh;
AVCaptureMetadataOutput *captureMetadataOutput = [[AVCaptureMetadataOutput alloc] init];
[m_pCaptureSession addOutput:captureMetadataOutput];
//captureMetadataOutput.metadataObjectTypes = [captureMetadataOutput availableMetadataObjectTypes];
captureMetadataOutput.metadataObjectTypes = [[NSArray alloc] initWithObjects:AVMetadataObjectTypePDF417Code, nil];
[captureMetadataOutput setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
//AVCaptureVideoPreviewLayer *previewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:m_pCaptureSession];
m_pPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:m_pCaptureSession];
[m_pPreviewLayer setVideoGravity:AVLayerVideoGravityResizeAspectFill];
[m_pPreviewLayer setFrame:m_pLayoutPreview.layer.bounds];
[self->m_pLayoutPreview.layer addSublayer:m_pPreviewLayer];
[self->m_pLayoutPreview setHidden:NO];
[self->m_pLayoutContent setHidden:YES];
[m_pCaptureSession startRunning];
return YES;
}
- (void)captureOutput:(AVCaptureOutput *)output didOutputMetadataObjects:(NSArray<__kindof AVMetadataObject *> *)metadataObjects fromConnection:(AVCaptureConnection *)connection
{
for (AVMetadataObject *barcodeMetadata in metadataObjects) {
if ([barcodeMetadata.type isEqualToString:AVMetadataObjectTypePDF417Code])
{
//AVMetadataMachineReadableCodeObject *barcodeObject = (AVMetadataMachineReadableCodeObject *)[m_pPreviewLayer transformedMetadataObjectForMetadataObject:barcodeMetadata];
AVMetadataMachineReadableCodeObject *barcodeObject = metadataObjects[0];
m_sDataScanLincenseNumber = [barcodeObject stringValue];
[self performSelectorOnMainThread:@selector(fillData) withObject:nil waitUntilDone:NO];
return;
}
}
}
It's work good.
But it's not work with this code https://imge.to/i/vJLJdj
However, my android app can detect data from this barcode
Please tell me my problem is what? and how to relolve it
Thanks.
