private async Task ScanNow()
{
MobileBarcodeScanner scanner = new MobileBarcodeScanner();
Result result = null;
bool isBack = false;
TimeSpan timeSpan = new TimeSpan(0, 0, 0, 5, 0);
Device.StartTimer(timeSpan, () =>
{
if (result == null && !isBack)
{
scanner.AutoFocus();
return(true);
}
return(false);
});
result = await scanner.Scan();
isBack = true;
if (result != null)
{
await DisplayAlert("Scanned Barcode", result.Text, "OK");
}
//await Application.Current.MainPage.Navigation.PushAsync(new ScanPage());
}
private async void custom_scan()
{
View zxingOverlay;
MobileBarcodeScanner.Initialize(Application);
scanner = new MobileBarcodeScanner();
var options = new MobileBarcodeScanningOptions
{
AutoRotate = false,
UseFrontCameraIfAvailable = false,
TryHarder = true,
PossibleFormats = new List <ZXing.BarcodeFormat>
{
ZXing.BarcodeFormat.EAN_8, ZXing.BarcodeFormat.EAN_13, ZXing.BarcodeFormat.QR_CODE
}
};
//Tell our scanner we want to use a custom overlay instead of the default
scanner.UseCustomOverlay = true;
//Inflate our custom overlay from a resource layout
zxingOverlay = LayoutInflater.FromContext(this).Inflate(Resource.Layout.ZxingOverlay, null);
//Set our custom overlay
scanner.CustomOverlay = zxingOverlay;
new Task(async() =>
{
await Task.Delay(3000);
scanner.AutoFocus();
}).Start();
//Start scanning!
var result = await scanner.Scan(this, options);
HandleScanResult(result);
}
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
var view = inflater.Inflate(Resource.Layout.MySettingsView, container, false);
ImageButton scanBtn = view.FindViewById <ImageButton>(Resource.Id.btnScan);
TextView results = view.FindViewById <TextView>(Resource.Id.results);
scanBtn.Click += async(sender, e) =>
{
MobileBarcodeScanner.Initialize(Activity.Application);
var scanner = new MobileBarcodeScanner();
var result = (ZXing.Result)null;
new Thread(new ThreadStart(delegate
{
while (result == null)
{
scanner.AutoFocus();
Thread.Sleep(2000);
}
})).Start();
result = await scanner.Scan();
if (result == null)
{
return;
}
Console.WriteLine($"Scanned Barcode: {result}");
Activity.RunOnUiThread(() =>
{
results.Text = result.Text;
});
};
return(view);
}
private async void Scan_Click(object sender, RoutedEventArgs e)
{
scanner.UseCustomOverlay = true;
scanner.CustomOverlay = new CustomOverlay();
scanner.AutoFocus();
scanner.RootFrame = Frame;
try
{
MediaCapture capture = new MediaCapture();
await capture.InitializeAsync(new MediaCaptureInitializationSettings
{
StreamingCaptureMode = StreamingCaptureMode.Video
});
await scanner.Scan(new MobileBarcodeScanningOptions()
{
PossibleFormats = new List <BarcodeFormat>()
{
BarcodeFormat.QR_CODE
}
}).ContinueWith(t =>
{
HandleScanResult(t.Result);
didScan = true;
});
}
catch (UnauthorizedAccessException)
{
AccessDeniedDialog dialog = new AccessDeniedDialog();
await dialog.ShowAsync();
}
}
public async Task <byte[]> ScanBarcodeAsync()
{
string msg = "";
byte[] scanData = null;
MobileBarcodeScanningOptions scanoptions = new MobileBarcodeScanningOptions();
scanoptions.TryInverted = true;
scanoptions.TryHarder = true;
scanoptions.AutoRotate = false;
scanner.UseCustomOverlay = false;
scanner.AutoFocus();
scanner.TopText = "请扫码";
scanner.BottomText = "Wait for the barcode to automatically scan!";
//Start scanning
var result = await scanner.Scan(scanoptions);
if (result != null && !string.IsNullOrEmpty(result.Text))
{
msg = result.Text;
scanData = System.Text.Encoding.Default.GetBytes(msg);
}
return(scanData);
}
public MainPage()
{
InitializeComponent();
_injector = InputInjector.TryCreate();
if (_injector == null)
{
Console.WriteLine("Can't work, no InputInjector available");
Application.Current.Exit();
}
//Create a new instance of our scanner
_scanner = new MobileBarcodeScanner(Dispatcher);
_scanner.RootFrame = Frame;
_scanner.Dispatcher = Dispatcher;
//Tell our scanner to use the default overlay
_scanner.UseCustomOverlay = false;
//We can customize the top and bottom text of our default overlay
_scanner.TopText = "Hold camera up to barcode";
_scanner.BottomText = "The code will be typed in the active app";
//Start scanning
_scanner.AutoFocus();
Loaded += OnLoaded;
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
MobileBarcodeScanner.Initialize(Application);
SetContentView(Resource.Layout.Main);
Window.SetBackgroundDrawableResource(Resource.Drawable.background);
scanner = new MobileBarcodeScanner();
scanner.AutoFocus();
scanner.FlashButtonText = "flash";
var toolbar = FindViewById <Toolbar> (Resource.Id.toolbar);
//Toolbar will now take on default actionbar characteristics
SetActionBar(toolbar);
ActionBar.SetIcon(Resource.Drawable.iconsamll);
ActionBar.Title = "QR & Bar Code Reader";
ActionBar.Title.TrimEnd();
var btnSingle = FindViewById <Button> (Resource.Id.btnSingle);
btnSingle.Click += BtnSingle_Click;
var btnMulty = FindViewById <Button>(Resource.Id.btnMulty);
btnMulty.Click += BtnMulty_Click;
Common.HistoryItem = new List <string>();
readXml();
var toolbarBottom = FindViewById <Toolbar>(Resource.Id.toolbar_bottom);
//toolbarBottom.Title = "Settings";
toolbarBottom.InflateMenu(Resource.Menu.photo_edit);
toolbarBottom.MenuItemClick += (sender, e) =>
{
if (e.Item.TitleFormatted.ToString() == "Delete")
{
Android.App.AlertDialog.Builder dialog = new AlertDialog.Builder(this);
AlertDialog alert = dialog.Create();
alert.SetMessage("Clear History?");
alert.SetButton("OK", (c, ev) =>
{
var conn = new SQLiteConnection(Common.DirectoryPath);
conn.Execute("Delete FROM ConfigDetails");
Toast.MakeText(this, "Complete", ToastLength.Short).Show();
});
alert.SetButton2("CANCEL", (c, ev) => { });
alert.Show();
}
};
}
public CommonScan()
{
_options = new MobileBarcodeScanningOptions
{
CameraResolutionSelector = HandleCameraResolutionSelectorDelegate
};
_scanner = new MobileBarcodeScanner();
_scanner.AutoFocus();
}
async partial void BtnScanBarcode_TouchUpInside(UIButton sender)
{
var scanner = new MobileBarcodeScanner();
scanner.AutoFocus();
scanner.TopText = "Hold the camera up to the barcode";
scanner.BottomText = "Wait for scanner to complete the scan";
var options = new MobileBarcodeScanningOptions();
options.UseCode39ExtendedMode = true;
options.TryHarder = true;
options.AutoRotate = false;
var result = await scanner.Scan(new MobileBarcodeScanningOptions { AutoRotate = false });
if (result != null && !string.IsNullOrEmpty(result.Text))
{
{
txtBarcodeText.Text = result.Text;
}
}
}
private async void Scan()
{
MobileBarcodeScanningOptions options = new MobileBarcodeScanningOptions();
options.AutoRotate = false;
var scanner = new MobileBarcodeScanner();
scanner.AutoFocus();
var result = await scanner.Scan(options);
if (result != null)
{
searchView.SetQuery(result.Text, true);
}
}
private async void Scanner()
{
ZXing.Result result = null;
scanner.TopText = "Aguarde o escaneamento do código de barras";
new Thread(new ThreadStart(delegate
{
while (result == null)
{
scanner.AutoFocus();
Thread.Sleep(2000);
}
})).Start();
result = await scanner.Scan();
HandleScanResult(result);
}
private async void btn_clicked(object sender, EventArgs e)
{
var scanner = new MobileBarcodeScanner();
var mobileBarcodeScanningOptions = new MobileBarcodeScanningOptions();
mobileBarcodeScanningOptions.AutoRotate = true;
scanner.AutoFocus();
if (!scanner.IsTorchOn)
{
scanner.Torch(true);
}
scanner.TopText = "Hold the camera up to the barcode ";
scanner.BottomText = "wait for the barcode automatically scan!";
ZXing.Result result = await scanner.Scan(mobileBarcodeScanningOptions);
HandleResult(result);
}
public async Task StartScan(MobileBarcodeScanningOptions options = null)
{
try
{
var scanner = new MobileBarcodeScanner()
{
TopText = "Scan Code"
};
scanner.ScanContinuously(options ?? new MobileBarcodeScanningOptions
{
PossibleFormats = new List <BarcodeFormat>
{
BarcodeFormat.EAN_8,
BarcodeFormat.EAN_13,
BarcodeFormat.CODE_39,
BarcodeFormat.CODE_128,
BarcodeFormat.QR_CODE
},
AutoRotate = false,
UseFrontCameraIfAvailable = false,
TryHarder = true
}, (result) =>
{
CrossSimpleAudioPlayer.Current.Load("beep.wav");
CrossSimpleAudioPlayer.Current.Play();
OnScanned?.Invoke(this, result.Text);
MessagingCenter.Send(this, MessageKey.BARCODE_SCANNED, result.Text);
});
Device.StartTimer(TimeSpan.FromSeconds(3), () =>
{
scanner.AutoFocus();
return(true);
});
}
catch (Exception ex)
{
await Application.Current.MainPage.DisplayAlert(TranslateExtension.GetValue("alert_title_error"), ex.Message, TranslateExtension.GetValue("alert_message_ok"));
}
}
/// <summary>
/// Efetua a leitura de um código de barras; Por padrão, lê qualquer formato disponível atualmente
/// </summary>
/// <param name="p_sTextoExibicao">Texto que aparecerá para o usuário durante a leitura do código.</param>
/// <returns></returns>
public async Task <string> LerCodigo(string p_sTextoExibicao, bool p_bAutoFoco)
{
string sRet = string.Empty;
MobileBarcodeScanningOptions scanOptions = new MobileBarcodeScanningOptions();
scanOptions.AutoRotate = false;
scanOptions.UseNativeScanning = true;
//scanOptions.TryInverted = true;
scanOptions.PossibleFormats.Add(ZXing.BarcodeFormat.EAN_13);
//scanOptions.TryHarder = true;
scanOptions.DelayBetweenAnalyzingFrames = 712;
var scanner = new MobileBarcodeScanner();
if (!string.IsNullOrEmpty(p_sTextoExibicao))
{
scanner.TopText = p_sTextoExibicao;
}
ZXing.Result zRet = null;
new Thread(new ThreadStart(delegate
{
while (zRet == null)
{
scanner.AutoFocus();
Thread.Sleep(1916);
}
})).Start();
zRet = await scanner.Scan(scanOptions);
if (zRet != null)
{
sRet = (!string.IsNullOrEmpty(zRet.Text) ? zRet.Text : "");
}
MobileBarcodeScanner.Uninitialize(app);
return(sRet);
}
public async Task <string> ScanAsync()
{
CameraResolution HandleCameraResolutionSelectorDelegate(List <CameraResolution> availableResolutions)
{
//Don't know if this will ever be null or empty
if (availableResolutions == null || availableResolutions.Count < 1)
{
return new CameraResolution()
{
Height = 900, Width = 800
}
}
;
//Debugging revealed that the last element in the list
//expresses the highest resolution. This could probably be more thorough.
return(availableResolutions[availableResolutions.Count - 1]);
}
var options = new MobileBarcodeScanningOptions
{
TryHarder = true,
PossibleFormats = new List <BarcodeFormat> {
BarcodeFormat.PDF_417
}
};
var scanner = new MobileBarcodeScanner()
{
TopText = "Acerca la camara al elemento",
BottomText = "Toca la pantalla para enfocar",
};
scanner.AutoFocus();
var scanResult = await scanner.Scan(options);
return(scanResult.Text);
}
}
public static async Task <String> ScanAsync()
{
try
{
if (!Application.Context.PackageManager.HasSystemFeature(PackageManager.FeatureCamera))
{
return(string.Empty);
}
//if (!IsCameraCanUse())
//{
// return string.Empty;
//}
Application app = new Application();
MobileBarcodeScanner.Initialize(app);
MobileBarcodeScanningOptions opts = new MobileBarcodeScanningOptions
{
PossibleFormats = new List <BarcodeFormat>
{
BarcodeFormat.CODE_39,
BarcodeFormat.CODE_93,
BarcodeFormat.CODE_128,
BarcodeFormat.EAN_13,
BarcodeFormat.EAN_8,
BarcodeFormat.QR_CODE
}
};
opts.DisableAutofocus = false;
var scanner = new MobileBarcodeScanner();
scanner.TopText = Application.Context.Resources.GetString(Resource.String.Scan);
scanner.AutoFocus();
var result = await scanner.Scan(opts);
return(result?.Text ?? string.Empty);
}
catch (Exception Ex)
{
WriteErrorLog(Ex);
return("");
}
}
public async Task StartScan(bool useFrontCamera = false, MobileBarcodeScanningOptions options = null)
{
try
{
var scanner = new MobileBarcodeScanner()
{
TopText = "Scan Code"
};
scanner.ScanContinuously(options ?? new MobileBarcodeScanningOptions
{
PossibleFormats = new List <BarcodeFormat>
{
BarcodeFormat.EAN_8,
BarcodeFormat.EAN_13,
BarcodeFormat.CODE_39,
BarcodeFormat.CODE_128,
BarcodeFormat.QR_CODE
},
AutoRotate = false,
UseFrontCameraIfAvailable = useFrontCamera,
TryHarder = true,
DisableAutofocus = false
}, (result) =>
{
BarcodeScanned?.Invoke(this, result.Text);
MessagingCenter.Send(this, Constants.BARCODE_SCANNED, result.Text);
});
Device.StartTimer(TimeSpan.FromSeconds(3), () =>
{
scanner.AutoFocus();
return(true);
});
}
catch (Exception ex)
{
await Application.Current.MainPage.DisplayAlert("Error", ex.Message, "Ok");
}
}
public async Task <string> ScanAsync()
{
var scanner = new MobileBarcodeScanner();
Xamarin.Forms.Device.StartTimer(new TimeSpan(0, 0, 0, 1, 500), () =>
{
if (scanning)
{
scanner.AutoFocus();
return(true);
}
return(false);
});
scanning = true;
var result = await scanner.Scan(options);
scanning = false;
return(result != null ? result.Text : string.Empty);
}
private async void ScanBarcode(long?burialAppId)
{
_scanner = new MobileBarcodeScanner
{
TopText = "Hold the camera up to the barcode\nAbout 6 inches away",
BottomText = "Wait for the barcode to automatically scan!",
CancelButtonText = "Return",
FlashButtonText = "Flash"
};
var opt = new MobileBarcodeScanningOptions {
DelayBetweenContinuousScans = 3000
};
opt.AutoRotate = true;
_scanner.Torch(true);
_scanner.AutoFocus();
try
{
var results = await _scanner.Scan(opt);
HandleScanResult(results, burialAppId);
if (_burialOutPut != null)
{
_burialOutPut.SupervisorId = SupervisorId;
await Application.Current.MainPage.Navigation.PushAsync(
new Undertaker(_burialOutPut, _apiBurial) { Title = _burialOutPut.Cemetery + " Burials" });
}
}
catch (Exception ex)
{
await Application.Current.MainPage.DisplayAlert("Error on scanner Api",
ex.Message,
"OK");
}
}
public void AutoFocus()
{
_scanner.AutoFocus();
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
MobileBarcodeScanner.Initialize(Application);
SetContentView(Resource.Layout.Search);
scanner = new MobileBarcodeScanner();
scanner.UseCustomOverlay = false;
scanner.TopText = "Hold the camera up to the barcode\nAbout 6 inches away";
scanner.BottomText = "Wait for the barcode to automatically scan!";
isbnEditText = this.FindViewById <EditText>(Resource.Id.isbnEditText);
buttonScan = this.FindViewById <Button>(Resource.Id.scanButton);
buttonSearch = this.FindViewById <Button>(Resource.Id.searchButton);
buttonScan.Click += async delegate
{
Result result = null;
new Thread(new ThreadStart(delegate
{
while (result == null)
{
scanner.AutoFocus();
Thread.Sleep(1000);
}
})).Start();
result = await scanner.Scan();
if (result != null && !string.IsNullOrEmpty(result.Text))
{
isbnEditText.Text = result.Text;
var isbn = new IsbnSearchRequest()
{
Isbn = isbnEditText.Text
};
var isbnRequest = JsonConvert.SerializeObject(isbn);
var utils = new Utilities();
var response = await Utilities.MakeAjaxRequestAsync(Constants.SEARCH_URL, isbnRequest, Constants.JSON_CONTENT);
if (response == "Status: Not found")
{
Toast toast = Toast.MakeText(this, "Title not found.", ToastLength.Long);
toast.Show();
}
else
{
var intent = new Intent(this, typeof(BibDisplayActivity));
intent.PutExtra("response", response);
StartActivity(intent);
}
}
};
buttonSearch.Click += async(sender, e) =>
{
try
{
var isbn = new IsbnSearchRequest()
{
Isbn = isbnEditText.Text
};
var isbnRequest = JsonConvert.SerializeObject(isbn);
var utils = new Utilities();
var response = await Utilities.MakeAjaxRequestAsync(Constants.SEARCH_URL, isbnRequest, Constants.JSON_CONTENT);
var intent = new Intent(this, typeof(BibDisplayActivity));
intent.PutExtra("response", response);
StartActivity(intent);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
};
}