public void BarcodeDetector_Builder()
{
var detector = new BarcodeDetector.Builder(Application.Context).Build();
Assert.True(detector != null);
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.FaceTracker);
mPreview = FindViewById <CameraSourcePreview> (Resource.Id.preview);
mGraphicOverlay = FindViewById <GraphicOverlay> (Resource.Id.faceOverlay);
var detector = new BarcodeDetector.Builder(Application.Context)
.Build();
detector.SetProcessor(
new MultiProcessor.Builder(new GraphicBarcodeTrackerFactory(mGraphicOverlay)).Build());
if (!detector.IsOperational)
{
// Note: The first time that an app using barcode API is installed on a device, GMS will
// download a native library to the device in order to do detection. Usually this
// completes before the app is run for the first time. But if that download has not yet
// completed, then the above call will not detect any barcodes.
//
// IsOperational can be used to check if the required native library is currently
// available. The detector will automatically become operational once the library
// download completes on device.
Android.Util.Log.Warn(TAG, "Barcode detector dependencies are not yet available.");
}
mCameraSource = new CameraSource.Builder(Application.Context, detector)
.SetRequestedPreviewSize(640, 480)
.SetFacing(CameraFacing.Back)
.SetRequestedFps(15.0f)
.Build();
}
protected override void OnCreate(Bundle savedInstanceState)
{
ImageView imageView;
Button btnScan;
EditText edttxtResult;
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
imageView = FindViewById <ImageView>(Resource.Id.imageView);
btnScan = FindViewById <Button>(Resource.Id.btnScan);
edttxtResult = FindViewById <EditText>(Resource.Id.txtResult);
Bitmap bitMap = BitmapFactory.DecodeResource(ApplicationContext.Resources, Resource.Drawable.qrcode);
imageView.SetImageBitmap(bitMap);
btnScan.Click += delegate
{
BarcodeDetector detector = new BarcodeDetector.Builder(ApplicationContext).SetBarcodeFormats(BarcodeFormat.QrCode).Build();
Android.Gms.Vision.Frame fram = new Android.Gms.Vision.Frame.Builder().SetBitmap(bitMap).Build();
SparseArray barsCode = detector.Detect(fram);
Barcode result = (Barcode)barsCode.ValueAt(0);
edttxtResult.Text = result.RawValue;
};
}
public void InitCameraSource()
{
var detector = new BarcodeDetector.Builder(_applicationContext)
.Build();
detector.SetProcessor(
new MultiProcessor.Builder(new GraphicBarcodeTrackerFactory(_graphicOverlay)).Build());
if (!detector.IsOperational)
{
// Note: The first time that an app using barcode API is installed on a device, GMS will
// download a native library to the device in order to do detection. Usually this
// completes before the app is run for the first time. But if that download has not yet
// completed, then the above call will not detect any barcodes.
//
// IsOperational can be used to check if the required native library is currently
// available. The detector will automatically become operational once the library
// download completes on device.
Android.Util.Log.Warn(Tag, "Barcode detector dependencies are not yet available.");
}
_cameraSource = new CameraSource.Builder(_applicationContext, detector)
.SetRequestedPreviewSize(640, 480)
.SetFacing(CameraFacing.Back)
.SetRequestedFps(15.0f)
.SetAutoFocusEnabled(true)
.Build();
StartCameraSource();
}
public static async Task <List <BarcodeResult> > ScanFromImage(byte[] imageArray)
{
BarcodeDetector detector = new BarcodeDetector.Builder(Android.App.Application.Context)
.SetBarcodeFormats(Configuration.BarcodeFormats)
.Build();
Bitmap bitmap = BitmapFactory.DecodeByteArray(imageArray, 0, imageArray.Length);
Android.Gms.Vision.Frame frame = new Android.Gms.Vision.Frame.Builder().SetBitmap(bitmap).Build();
SparseArray qrcodes = detector.Detect(frame);
List <BarcodeResult> barcodeResults = new List <BarcodeResult>();
for (int i = 0; i < qrcodes.Size(); i++)
{
Barcode barcode = qrcodes.ValueAt(i) as Barcode;
var type = Methods.ConvertBarcodeResultTypes(barcode.ValueFormat);
var value = barcode.DisplayValue;
var rawValue = barcode.RawValue;
barcodeResults.Add(new BarcodeResult
{
BarcodeType = type,
DisplayValue = value,
RawValue = rawValue
});
}
return(barcodeResults);
}
private RebuyCameraSource createCameraSource(Context context, BarcodeScanner barcodeScanner, CameraConfigurator configurator)
{
var barcodeDetector = new BarcodeDetector.Builder(context).Build();
var barcodeFactory = new BarcodeTrackerFactory(barcodeScanner);
barcodeDetector.SetProcessor(new MultiProcessor.Builder(barcodeFactory).Build());
return(new RebuyCameraSource.Builder(context, barcodeDetector)
.SetFacing(RebuyCameraSource.CameraFacingBack)
.SetConfigurator(configurator)
.Build());
}
public BarcodeScannerRenderer(Context context) : base(context)
{
MainLayout =
(ConstraintLayout)LayoutInflater.FromContext(context).Inflate(Resource.Layout.BarcodeTracker, null);
AddView(MainLayout);
CameraSourcePreview = MainLayout.FindViewById <CameraSourcePreview>(Resource.Id.preview);
CloseScannerButton = MainLayout.FindViewById <ImageButton>(Resource.Id.closeScannerBtn);
CloseScannerButton.Click += async delegate
{
await Xamarin.Forms.Application.Current.MainPage.Navigation.PopModalAsync();
};
MGraphicOverlay = MainLayout.FindViewById <GraphicOverlay>(Resource.Id.faceOverlay);
BarcodeDetector detector = new BarcodeDetector.Builder(Application.Context)
.Build();
detector.SetProcessor(
new MultiProcessor.Builder(new GraphicBarcodeTrackerFactory(MGraphicOverlay, this)).Build());
if (!detector.IsOperational)
{
// Note: The first time that an app using barcode API is installed on a device, GMS will
// download a native library to the device in order to do detection. Usually this
// completes before the app is run for the first time. But if that download has not yet
// completed, then the above call will not detect any barcodes.
//
// IsOperational can be used to check if the required native library is currently
// available. The detector will automatically become operational once the library
// download completes on device.
Android.Util.Log.Warn(TAG, "Barcode detector dependencies are not yet available.");
}
MCameraSource = new CameraSource.Builder(Application.Context, detector)
.SetAutoFocusEnabled(true)
.SetFacing(Android.Gms.Vision.CameraFacing.Back)
.SetRequestedFps(15.0f)
.Build();
var torchFab = FindViewById <FloatingActionButton>(Resource.Id.fab_torchlight);
var hasFlashlight = Context.PackageManager.HasSystemFeature(PackageManager.FeatureCameraFlash);
if (!hasFlashlight)
{
torchFab.Hide();
}
else
{
torchFab.Click += TorchFab_Click;
}
StartCameraSource();
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Main);
_cameraView = (SurfaceView)FindViewById(Resource.Id.camera_view);
_barcodeInfo = (TextView)FindViewById(Resource.Id.code_info);
var barcodeDetector = new BarcodeDetector.Builder(this)
.SetBarcodeFormats(BarcodeFormat.QrCode)
.Build();
barcodeDetector.SetProcessor(new Builder(this)
.Build());
_cameraSource = new CameraSource.Builder(this, barcodeDetector)
.SetRequestedPreviewSize(640, 900)
.SetAutoFocusEnabled(true)
.Build();
}
private void CreateCameraSource()
{
var context = Application.Context;
BarcodeDetector barcodes = new BarcodeDetector.Builder(context).Build();
TextRecognizer text = new TextRecognizer.Builder(context).Build();
MultiDetector detector = new MultiDetector.Builder().Add(barcodes).Add(text).Build();
barcodes.SetProcessor(new MultiProcessor.Builder(this).Build());
text.SetProcessor(new MultiProcessor.Builder(this).Build());
if (!detector.IsOperational)
{
Log.Warn(__CLASS__, "Detection is not ready");
}
mCameraSource = new CameraSource.Builder(context, detector)
.SetRequestedPreviewSize(512, 300)
.SetFacing(CameraFacing.Front)
.SetRequestedFps(15.0f)
.SetAutoFocusEnabled(true)
.Build();
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
// 스케너 사용 가능여부 확인
if (!CheckScannerStatus())
{
return;
}
if (CameraSource == null && Element.Width > 0 && Element.Height > 0)
{
// 바코드 검출 객체 설정 및 콜백 등록
BarcodeDetector = new BarcodeDetector
.Builder(Context)
.SetBarcodeFormats(Element.BarcodeFormats.ToVisionFormat())
.Build();
BarcodeDetector.SetProcessor(this);
this.Write("BarcodeDetector is created");
// 프리뷰어 사이즈 얻기
var previewerSize = Element.GetPreviewSize(Resources.DisplayMetrics);
this.Write($"Previewer size - Width : {previewerSize.Width}, Height : {previewerSize.Height}");
// 카메라 소스 생성
CameraSource = new CameraSource
.Builder(Context, BarcodeDetector)
.SetFacing(CameraFacing.Back)
.SetRequestedPreviewSize(previewerSize.Width, previewerSize.Height)
.SetRequestedFps(10.0f)
.Build();
this.Write("CameraSource is created");
}
switch (e.PropertyName)
{
case "IsTorchOn":
{
try
{
if (Element.IsScanning && Camera != null)
{
var parameters = Camera.GetParameters();
parameters.FlashMode = Element.IsTorchOn ? TorchOn : TorchOff;
Camera.SetParameters(parameters);
this.Write($"IsTorchOn : {Element.IsTorchOn}");
}
}
catch (Exception ex)
{
this.Write($"Camera exception : {ex.Message}, IsTorchOn : {Element.IsTorchOn}");
}
break;
}
case "IsPreviewing":
case "IsScanning":
{
try
{
if (Element.IsScanning && Element.IsPreviewing)
{
CameraSource?.Start(Control.Holder);
Camera = CameraSource?.GetCamera();
SetAutoFocusCallback();
}
else
{
Element.SetValue(BarcodeScanner.IsTorchOnProperty, false);
CameraSource?.Stop();
}
}
catch (Exception ex)
{
var toggleValue = e.PropertyName == "IsScanning"
? Element.IsScanning
: Element.IsPreviewing;
this.Write($"CameraSource exception : {ex.Message}, {e.PropertyName} : {toggleValue}");
}
this.Write($"{e.PropertyName} : {Element.IsScanning}");
break;
}
}
}
protected override void OnCreate(Bundle bundle)
{
Window.SetFlags(WindowManagerFlags.KeepScreenOn, WindowManagerFlags.KeepScreenOn);
base.OnCreate(bundle);
ActionBar.SetHomeButtonEnabled(true);
ActionBar.SetDisplayHomeAsUpEnabled(true);
SetContentView(Resource.Layout.EnergyActivity);
_scanView = FindViewById <EnergyScanView>(Resource.Id.energy_scan_view);
_energyUseCase = Intent.Extras.GetSerializable("OBJECT").ToString();
_scanView.SetConfigFromAsset(_energyUseCase.Equals(Resources.GetString(Resource.String.scan_heat_meter))
? "EnergyConfigHeatMeter.json"
: "EnergyConfigAll.json");
_scanView.InitAnyline(MainActivity.LicenseKey, this);
NativeBarcodeResultTextView = FindViewById <TextView>(Resource.Id.barcode_result_text);
NativeBarcodeResultTextView.Text = "";
_toggleBarcodeSwitch = FindViewById <Switch>(Resource.Id.toggle_barcode_switch);
// we don't use the native barcode scan mode in heat meters in this example
if (_energyUseCase.Equals(Resources.GetString(Resource.String.scan_heat_meter)))
{
var toggleBarcodeLayout = FindViewById <RelativeLayout>(Resource.Id.toggle_barcode_layout);
toggleBarcodeLayout.Visibility = ViewStates.Gone;
}
else
{
_toggleBarcodeSwitch.CheckedChange += (sender, args) =>
{
if (((Switch)sender).Checked)
{
/*
* Enable simultaneous barcode scanning:
*
* The following lines of code enable the simultaneous barcode scanning functionality.
* In order for this to work, some additional requires must be met in the project settings:
*
* In AndroidManifest.xml, the following must be added:
* <meta-data android:name="com.google.android.gms.vision.DEPENDENCIES" android:value="barcode" />
*
* Also, the Nuget Package "Xamarin.GooglePlayServices.Vision" must be installed for this application.
* For installation, the App must be targeted to Android 7.0, but then the SDK version can be reduced again.
*/
try
{
// First, we check if the barcode detector works on the device
var detector = new BarcodeDetector.Builder(ApplicationContext).Build();
if (!detector.IsOperational)
{
// Native barcode scanning not supported on this device
Toast.MakeText(ApplicationContext, "Native Barcode scanning not supported on this device!", ToastLength.Long).Show();
_toggleBarcodeSwitch.Checked = false;
}
else
{
_nativeBarcodeResultListener?.Dispose(); // dispose of old barcodelistener first
_nativeBarcodeResultListener = new NativeBarcodeResultListener(this);
_scanView.EnableBarcodeDetection(true, _nativeBarcodeResultListener);
}
}
catch (Exception) { }
}
else
{
_scanView.DisableBarcodeDetection();
_nativeBarcodeResultListener?.Dispose();
NativeBarcodeResultTextView.Text = "";
}
};
}
// In our main activity, we selected which type of meters we want to scan
// Now we want to populate the RadioButton group accordingly:
RadioGroup radioGroup = FindViewById <RadioGroup>(Resource.Id.radio_group);
int defaultIndex = 0; //index for which radiobutton is checked at the beginning
if (_energyUseCase.Equals(Resources.GetString(Resource.String.scan_analog_meter)))
{
SetTitle(Resource.String.scan_analog_meter);
_scanView.SetScanMode(EnergyScanView.ScanMode.AnalogMeter);
}
else if (_energyUseCase.Equals(Resources.GetString(Resource.String.scan_digital_meter)))
{
SetTitle(Resource.String.scan_digital_meter);
_scanView.SetScanMode(EnergyScanView.ScanMode.DigitalMeter);
}
else if (_energyUseCase.Equals(Resources.GetString(Resource.String.scan_heat_meter)))
{
SetTitle(Resource.String.scan_heat_meter);
_scanList = new Dictionary <string, EnergyScanView.ScanMode>
{
{ Resources.GetString(Resource.String.heat_meter_4_3), EnergyScanView.ScanMode.HeatMeter4 },
{ Resources.GetString(Resource.String.heat_meter_5_3), EnergyScanView.ScanMode.HeatMeter5 },
{ Resources.GetString(Resource.String.heat_meter_6_3), EnergyScanView.ScanMode.HeatMeter6 }
};
_scanView.SetScanMode(_scanList.First().Value);
// Adding an additional layout rule for this use case because of the radiobutton group size.
var lp = NativeBarcodeResultTextView.LayoutParameters as RelativeLayout.LayoutParams;
if (lp != null)
{
lp.AddRule(LayoutRules.Above, radioGroup.Id);
NativeBarcodeResultTextView.LayoutParameters = lp;
}
}
else if (_energyUseCase.Equals(Resources.GetString(Resource.String.scan_analog_digital_meter)))
{
SetTitle(Resource.String.scan_analog_digital_meter);
_scanView.SetScanMode(EnergyScanView.ScanMode.AutoAnalogDigitalMeter);
}
else if (_energyUseCase.Equals(Resources.GetString(Resource.String.scan_serial_numbers)))
{
SetTitle(Resource.String.scan_serial_numbers);
_scanView.SetScanMode(EnergyScanView.ScanMode.SerialNumber);
// we can set the regex and character whitelist to improve SerialNumber scanning
_scanView.SetSerialNumberCharWhitelist("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ");
_scanView.SetSerialNumberValidationRegex("^[0-9A-Z]{5,}$");
}
else if (_energyUseCase.Equals(Resources.GetString(Resource.String.scan_dial_meters)))
{
SetTitle(Resource.String.scan_dial_meters);
_scanView.SetScanMode(EnergyScanView.ScanMode.DialMeter);
}
else if (_energyUseCase.Equals(Resources.GetString(Resource.String.scan_dot_matrix_meters)))
{
SetTitle(Resource.String.scan_dot_matrix_meters);
_scanView.SetScanMode(EnergyScanView.ScanMode.DotMatrixMeter);
}
Util.PopulateRadioGroupWithList(this, radioGroup, _scanList, defaultIndex);
// Switch the scan mode depending on user selection
radioGroup.CheckedChange += (sender, args) =>
{
_scanView.CancelScanning();
var rb = FindViewById <RadioButton>(args.CheckedId);
var scanMode = _scanList.Single(x => x.Key.Equals(rb.Text)).Value;
_scanView.SetScanMode(scanMode);
_scanView.StartScanning();
};
_scanView.CameraOpened += (s, e) => { Log.Debug(TAG, "Camera opened successfully. Frame resolution " + e.Width + " x " + e.Height); };
_scanView.CameraError += (s, e) => { Log.Error(TAG, "OnCameraError: " + e.Event.Message); };
_scanView.SetCancelOnResult(false);
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.BarcodeTracker);
//this.ActionBar.SetDisplayHomeAsUpEnabled(true);
buttonFlash = FindViewById <TextView>(Resource.Id.btnFlash2);
buttonFlash.Click += ButtonFlash_Click;
var buttonExit = FindViewById <ImageButton>(Resource.Id.btnExit);
buttonExit.Click += ButtonExit_Click;
Intent intent = new Intent(this.Intent);
rowPosition = 0;
IsContinue = intent.GetBooleanExtra("IsContinue", false);
IsFixed = intent.GetBooleanExtra("IsFixed", false);
AllScanBarcode = intent.GetStringArrayListExtra("AllScanBarcode");
ScanCompletedBarcode = intent.GetStringArrayListExtra("ScanCompletedBarcode");
SaveCompletedBarcode = intent.GetStringArrayListExtra("SaveCompletedBarcode");
mPreview = FindViewById <CameraSourcePreview>(Resource.Id.preview);
mGraphicOverlay = FindViewById <GraphicOverlay>(Resource.Id.barcodeOverlay);
//mView = FindViewById<TouchView>(Resource.Id.left_top_view);
//mView.setRec(rec);
//BarcodeFormat supportBarcodeFormat = new BarcodeFormat();
//supportBarcodeFormat |= BarcodeFormat.Code128;
//supportBarcodeFormat |= BarcodeFormat.Ean13;
string jsonList = Xamarin.Forms.Application.Current.Properties["SupportBarcodeFormat"].ToString();
List <Helpers.BarcodeFormat> tmpList = JsonConvert.DeserializeObject <List <Helpers.BarcodeFormat> >(jsonList);
Detector detector = null;
//Xamarin.Android에서 AztecCode를 사용하기 위해서는 바코드 지원타입을 비워놔야 한다.
//AztecCode 지원코드는 4096인데 Xamarin.Android에선 코드 타입이 없고 전체로 하면 스캔 가능한다.
if (tmpList.Contains(Helpers.BarcodeFormat.AztecCode))
{
detector = new BarcodeDetector.Builder(Application.Context)
.Build();
}
else
{
var barcodeFormat = ConvertToAndroid(JsonConvert.DeserializeObject <List <Helpers.BarcodeFormat> >(jsonList));
detector = new BarcodeDetector.Builder(Application.Context)
.SetBarcodeFormats(barcodeFormat)
.Build();
}
detector.SetProcessor(new MultiProcessor.Builder(new GraphicBarcodeTrackerFactory(mGraphicOverlay, this)).Build());
//FocusingProcessor를 사용해도 되기는 하나 한번 포커스 지정되고 나서 연속 스캔할때 벗어나도 계속 스캐되는 버그가 있음.
//detector.SetProcessor(new CentralBarcodeFocusingProcessor(detector, new GraphicBarcodeTracker(mGraphicOverlay, this)));
if (!detector.IsOperational)
{
Android.Util.Log.Warn(TAG, "Barcode detector dependencies are not yet available.");
}
mCameraSource = new CameraSource.Builder(Application.Context, detector)
.SetRequestedPreviewSize((int)DeviceDisplay.MainDisplayInfo.Height, (int)DeviceDisplay.MainDisplayInfo.Width) //Max Size : 1920 x 1080 (아이폰과 동일함)
//.SetRequestedPreviewSize(1600, 1200)
.SetFacing(CameraFacing.Back)
.SetRequestedFps(30.0f) //안드로이 공식샘플은 15.0f 로 되어 있으나 기본값은 30.0f
.SetAutoFocusEnabled(true)
.Build();
_playerBeep = MediaPlayer.Create(this, Resource.Raw.beep07); //Beep음 (Scandit과 동일함)
_playerCaution = MediaPlayer.Create(this, Resource.Raw.beep06); //경고음.
}
public override void OnBindElements(View view)
{
try
{
CameraPreview = view.FindViewById <SurfaceView>(Resource.Id.CameraPreview);
CameraPreviewProgressBar = view.FindViewById <ProgressBar>(Resource.Id.CameraPreviewProgressBar);
Vibrator = (Vibrator)Activity.GetSystemService(Context.VibratorService);
_callback = Arguments.GetBoolean(Constants.Callback);
if (_callback)
{
_onBarcodeReadListener = NavigationManager.LastFragment as IOnBarcodeReadListener;
}
#if DEBUG
_scannedBarcode = Guid.NewGuid().ToString();
var token = CancelAndSetTokenForView(CameraPreview);
if (!_callback)
{
Task.Run(async() =>
{
var result = await ProductService.GetProductByBarcode(_scannedBarcode, token);
if (result.Error.Any())
{
var message = Resources.GetString(Resource.String.ProductBarcodeNotFound);
ShowToastMessage(message);
return;
}
RunOnUiThread(() =>
{
NavigationManager.GoToProductDetails(result.Data);
});
}, token);
}
else
{
NavigationManager.GoToPrevious();
}
#else
var barcodeFormats = Arguments.GetIntArray(Constants.BarcodeFormats)
.Cast <BarcodeFormat>()
.Aggregate((acc, barfor) => acc | barfor);
BarcodeDetector = new BarcodeDetector.Builder(Context)
.SetBarcodeFormats(barcodeFormats)
.Build();
CameraSource = new CameraSource
.Builder(Context, BarcodeDetector)
.SetRequestedPreviewSize(640, 480)
.SetFacing(CameraFacing.Back)
.Build();
BarcodeDetector.SetProcessor(this);
CameraPreview.Holder.AddCallback(this);
CameraPreviewProgressBar.Visibility = ViewStates.Invisible;
#endif
}
catch (System.Exception ex)
{
ShowToastMessage(ex.Message, ToastLength.Long);
NavigationManager.GoToPrevious();
}
}
