/// <summary>
/// Make call to camera
/// </summary>
/// <returns></returns>
public async System.Threading.Tasks.Task <string[]> GetImageFromCameraCallAsync()
{
if (!(Plugin.Media.CrossMedia.Current.IsCameraAvailable && Plugin.Media.CrossMedia.Current.IsTakePhotoSupported))
{
// <!-- If photo taking isn't supported, return with blank array -->
await Acr.UserDialogs.UserDialogs.Instance.AlertAsync("");
}
// <!-- Options related to image storage and formatting -->
Plugin.Media.Abstractions.StoreCameraMediaOptions mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "SGDPhotos",
Name = $"{System.DateTime.UtcNow}.png",
PhotoSize = Plugin.Media.Abstractions.PhotoSize.Small,
CompressionQuality = 50,
// <!-- These below largely have to be handled explicitly in Android
SaveToAlbum = true,
AllowCropping = true,
RotateImage = true
// -->
};
return(await GetImageAndCrop(mediaOptions));
}
private async void TomarFoto()
{
try
{
string rutaFoto;
await CrossMedia.Current.Initialize();
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
Plugin.Media.Abstractions.StoreCameraMediaOptions opciones = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
var foto = await CrossMedia.Current.TakePhotoAsync(opciones);
if (foto != null)
{
rutaFoto = foto.Path;
byte[] array = File.ReadAllBytes(rutaFoto);
Imagen = Convert.ToBase64String(array);
}
}
}
catch (Exception ex)
{
MostrarMensaje("No fue posible tomar la foto!");
}
}
private async void pictureButton_Clicked(object sender, System.EventArgs e)
{
await CrossMedia.Current.Initialize();
if (!Plugin.Media.CrossMedia.Current.IsCameraAvailable || !Plugin.Media.CrossMedia.Current.IsTakePhotoSupported)
{
return;
}
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "PictureTest", // 保存先ディレクトリ
Name = $"{DateTime.UtcNow}.jpg" // 保存ファイル名
};
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
if (file == null)
{
return;
}
image.Source = ImageSource.FromStream(() =>
{
var stream = file.GetStream();
return(stream);
});
//試しにローカルのファイルパスを指定してみる
string filepath = "samplephoto/bill.png";
ReadText(filepath);
}
private async void ExecuteTirarFotoCommandAsync()
{
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
// Supply media options for saving our photo after it's taken.
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "Pictures",
Name = $"{DateTime.UtcNow}.jpg"
};
// Take a photo of the business receipt.
var foto = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
if (foto == null)
{
return;
}
ImagemOferta = ImageSource.FromStream(() =>
{
var stream = foto.GetStream();
foto.Dispose();
return(stream);
});
}
}
public async void TakePhoto()
{
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
System.Diagnostics.Debug.WriteLine("Camera available!");
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
SaveToAlbum = false, SaveMetaData = false
};
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
if (file != null)
{
System.Diagnostics.Debug.WriteLine(file.Path);
imageFile = file;
UserPic.Source = ImageSource.FromStream(() => { return(file.GetStream()); });
return;
}
else
{
return;
}
}
}
public async Task TakePicture()
{
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "FaultPictures",
Name = $"{DateTime.UtcNow}.jpg"
};
try
{
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
await InsertFaultPicture(file);
}
catch (TaskCanceledException)
{
IsBusy = false;
}
catch (AggregateException)
{
IsBusy = false;
}
}
}
private async void Button_Clicked(object sender, System.EventArgs e)
{
// Alternatively choose picture from gallery
//{
// if (CrossMedia.Current.IsPickPhotoSupported)
// {
// var image = await CrossMedia.Current.PickPhotoAsync();
// Image.Source = ImageSource.FromStream(() =>
// {
// return image.GetStream();
// });
// MakeAnalysisRequest(image.Path);
// }
Plugin.Media.Abstractions.StoreCameraMediaOptions options = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
var image = await CrossMedia.Current.TakePhotoAsync(options);
// Image.Source = ImageSource.FromStream(() =>
// {
// return image.GetStream();
// });
Image.Source = image.Path;
ResultStack.IsVisible = true;
MakeAnalysisRequest(image.Path);
}
private async Task AddNewImage()
{
try
{
Plugin.Media.Abstractions.StoreCameraMediaOptions options = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
AllowCropping = true,
Name = Guid.NewGuid().ToString()
};
// Get photo from camera
Plugin.Media.Abstractions.MediaFile?photo = await Plugin.Media.CrossMedia.Current.TakePhotoAsync(options);
if (!String.IsNullOrWhiteSpace(photo?.Path) && File.Exists(photo.Path))
{
byte[] data = await File.ReadAllBytesAsync(photo.Path);
ViewModel.AddNewImage(data);
File.Delete(photo.Path);
}
}
catch (Exception exc)
{
Debug.WriteLine($"Error taking picture: {exc.Message}");
}
}
private async void Button_Clicked(object sender, EventArgs e)
{
Plugin.Media.Abstractions.StoreCameraMediaOptions options = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
var image = await CrossMedia.Current.TakePhotoAsync(options);
pic.Source = image.Path;
}
// Take picture with camera, transform it to grayscale and show it on canvas
async void TakeAndShowPicture(object sender, EventArgs args)
{
if (flagguidelinesphoto == false)
{
await DisplayAlert("To achieve suitable results...",
"- write on white background\n" +
"- use thick stroke\n" +
"- center with camera zoom\n" +
"- avoid shadows\n" +
"- fill 80% of height",
"OK");
flagguidelinesphoto = true;
}
// Initialite cam handling
await CrossMedia.Current.Initialize();
// Check if cam is available
if (!CrossMedia.Current.IsCameraAvailable || !CrossMedia.Current.IsTakePhotoSupported)
{
await DisplayAlert("Error", "No camera available.", "OK");
return;
}
// Define options for camera plugin
var options = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
// On iOS it's possible to take a squared pic rendered to 28x28 directly
if (Device.RuntimePlatform == Device.iOS)
{
options.AllowCropping = true;
options.PhotoSize = Plugin.Media.Abstractions.PhotoSize.MaxWidthHeight;
options.MaxWidthHeight = 28;
}
// Take picture
var photo = await CrossMedia.Current.TakePhotoAsync(options);
// Convert to resized (28x28) grayscaled bitmap
if (photo != null)
{
// Generate bitmap from media object
using (SKManagedStream skstream = new SKManagedStream(photo.GetStream()))
{
bitmap = SKBitmap.Decode(skstream);
}
// Convert bitmap to 28x28 pixel grayscale
bitmap = ConvertBitmap(bitmap);
}
// Update canvas view
canvasview.InvalidateSurface();
}
async Task TakePhoto()
{
var opts = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
var photo = await Plugin.Media.CrossMedia.Current.TakePhotoAsync(opts);
Image = ImageSource.FromStream(() => photo.GetStream());
var d = await _visionApi.DescribeImageInStreamAsync(photo.GetStream());
Caption = d.Captions.FirstOrDefault().Text;
}
public async Task <ImageSource> TakePicture()
{
var cmo = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
var photo = await Plugin.Media.CrossMedia.Current.TakePhotoAsync(cmo);
if (photo != null)
{
return(ImageSource.FromStream(() => { return photo.GetStream(); }));
}
return(null);
}
private async void TakePhoto()
{
await CrossMedia.Current.Initialize();
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "MenuAnalyzer",
Name = $"{DateTime.UtcNow}.jpg",
PhotoSize = Plugin.Media.Abstractions.PhotoSize.Medium
};
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
myActivityIndicator.IsRunning = true;
myActivityIndicator.IsVisible = true;
using (var client = new HttpClient())
{
using (var content = new MultipartFormDataContent())
{
byte[] filedata = await(new StreamContent(file.GetStream())).ReadAsByteArrayAsync();
var fileContent = new ByteArrayContent(filedata);
using (var message = await client.PostAsync(SettingsReader.GetKey("url"), fileContent))
{
try
{
string input = await message.Content.ReadAsStringAsync();
input = input.Substring(1, input.Length - 2);
input = input.Replace("\\", "");
MenuItems mi = Newtonsoft.Json.JsonConvert.DeserializeObject <MenuItems>(input);
MyList.ItemsSource = mi.menus;
MyList.IsVisible = true;
myActivityIndicator.IsRunning = false;
myActivityIndicator.IsVisible = false;
}
catch
{
myActivityIndicator.IsRunning = false;
myActivityIndicator.IsVisible = false;
await DisplayAlert("Error", "No text was detected or there was a parsing error, please try again!", "Ok");
}
}
}
}
}
}
private async void CameraButton_Clicked(object sender, EventArgs e)
{
Plugin.Media.Abstractions.StoreCameraMediaOptions options = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
options.SaveToAlbum = true;
photo = await Plugin.Media.CrossMedia.Current.TakePhotoAsync(options);
if (photo != null)
{
PhotoImage.Source = ImageSource.FromStream(() => { return(photo.GetStream()); });
}
}
/// <summary>
/// Get saved image
/// </summary>
/// <param name="mediaOptions"></param>
/// <returns></returns>
public static async System.Threading.Tasks.Task <string[]> GetImageAndCrop(Plugin.Media.Abstractions.StoreCameraMediaOptions mediaOptions)
{
try
{
using (Plugin.Media.Abstractions.MediaFile file = await Plugin.Media.CrossMedia.Current.TakePhotoAsync(mediaOptions))
{
string newPath = "";
System.Diagnostics.Debug.WriteLineIf(App.OutputVerbose, "In Taker");
if (file == null || file.Path == null || file.Path == "")
{
return(null);
}
if (System.IO.File.Exists(@file.Path))
{
var path = System.IO.Path.GetDirectoryName(@file.Path);
if (Xamarin.Forms.Device.RuntimePlatform == Xamarin.Forms.Device.Android)
{
newPath = System.IO.Path.Combine(path, System.IO.Path.GetFileNameWithoutExtension(@file.Path) + "crop.jpg");
// <!-- Note: this crops an image to square, since not a default in Android -->
Xamarin.Forms.DependencyService.Get <Interfaces.InterfaceBitmapResize>().ResizeBitmaps(@file.Path, @newPath);
}
else if (Xamarin.Forms.Device.RuntimePlatform == Xamarin.Forms.Device.iOS)
{
// <!-- Note: iOS has a center crop option built in -->
newPath = System.IO.Path.Combine(path, System.IO.Path.GetFileName(@file.Path));
}
var getNamedImageInfo = await Acr.UserDialogs.UserDialogs.Instance.PromptAsync("Name picture");
var getNamedImage = getNamedImageInfo.Text;
byte[] imageArray = System.IO.File.ReadAllBytes(@newPath);
string base64ImageRepresentation = System.Convert.ToBase64String(imageArray);
imageArray = null;
return(new string[] { getNamedImage, base64ImageRepresentation });
}
return(null);
}
}
catch
{
return(null);
}
}
private async void tirarFoto()
{
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
var nomeArquivo = $"{DateTime.UtcNow}.jpg";
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
//Directory = "Cupons",
Name = nomeArquivo
//SaveToAlbum = true
};
// Take a photo of the business receipt.
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
if (file == null)
{
return;
}
GastoInfo gasto = (GastoInfo)this.BindingContext;
gasto.FotoPath = nomeArquivo;
var fs = file.GetStream();
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Dispose();
fs = null;
gasto.FotoBase64 = Convert.ToBase64String(buffer);
//DisplayAlert("Salvar em", file.Path, "OK");
var path = file.Path;
_FotoImage.Source = ImageSource.FromStream(() =>
{
var stream = file.GetStream();
file.Dispose();
return(stream);
});
_FotoImage.Source = path;
_FotoImage.WidthRequest = TelaUtils.LarguraSemPixel * 0.5;
_FotoImage.HeightRequest = TelaUtils.LarguraSemPixel * 0.5;
//var gasto = (GastoInfo)BindingContext;
//gasto.Foto = Path.GetFileName(path);
}
else
{
await DisplayAlert("Dispositivo não possiu camera ou camera desativada", null, "OK");
}
}
public async void TakePhoto() // takePhoto.Clicked += async(sender, args) =>
{
try
{
if (!DoneWashing)
{
return;
}
await CrossMedia.Current.Initialize();
if (!CrossMedia.IsSupported || !CrossMedia.Current.IsCameraAvailable || !CrossMedia.Current.IsTakePhotoSupported)
{
await App.NavPage.CurrentPage.DisplayAlert("Warning", "Camera is not available", "OK");
return;
}
App.IsCameraUsed = true;
var x = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
App.UpdateLoading(false);
await Task.Delay(200);
var file = await CrossMedia.Current.TakePhotoAsync(x);
if (file == null)
{
return;
}
var src = ImageSource.FromFile(file.Path);
if (src != null)
{
Photo = src;
PhotoTaken = true;
file.Dispose();
}
}
catch (Exception e)
{
await App.NavPage.CurrentPage.DisplayAlert("Error", e.Message, "OK");
}
finally
{
App.IsCameraUsed = false;
App.UpdateLoading(false);
}
}
private async Task TakePictureAsync()
{
var options = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
options.PhotoSize = Plugin.Media.Abstractions.PhotoSize.MaxWidthHeight;
options.MaxWidthHeight = 1000;
var photo = await Plugin.Media.CrossMedia.Current.TakePhotoAsync(options);
if (photo != null)
{
using (var imageStream = photo.GetStream())
{
await RecognizeImageWritingAsync(imageStream);
}
}
}
private async void TakePictureAsync()
{
await RequestStorageWritePermission();
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
// Supply media options for saving our photo after it's taken.
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "Pictures",
Name = $"{DateTime.UtcNow}.jpg"
};
// Take a photo of the business receipt.
var file = await CrossMedia.Current.PickPhotoAsync();// mediaOptions);
await MakeRequest(file);
}
}
async void btnMake_ClickAsync(object sender, System.EventArgs e)
{
imageve.SetImageDrawable(null);
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "Drinks",
Name = $"{DateTime.UtcNow}.jpg"
};
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
var filePath = file.Path;
bitmap = BitmapFactory.DecodeFile(filePath);
imageve.SetImageBitmap(Bitmap.CreateScaledBitmap(bitmap, 300, 500, false));
}
Calculate();
}
private async void TakePhoto(object sender, System.EventArgs e)
{
ResultFrame.IsVisible = false;
Plugin.Media.Abstractions.StoreCameraMediaOptions options = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
var image = await CrossMedia.Current.TakePhotoAsync(options);
CameraImage.Source = ImageSource.FromStream(() =>
{
return(image.GetStream());
});
CameraImage.HeightRequest = TwitterImage.Height;
CameraImageFrame.IsVisible = true;
GetFaceIdImage(image.Path);
}
async void TakeAPhotoButton_OnClicked(object sender, EventArgs e)
{
if (!CrossMedia.Current.IsCameraAvailable || !CrossMedia.Current.IsTakePhotoSupported)
{
await DisplayAlert("No Camera", ":( No camera avaialble.", "OK");
return;
}
//var file = await CrossMedia.Current.TakePhotoAsync(new Plugin.Media.Abstractions.StoreCameraMediaOptions
//{
// PhotoSize = Plugin.Media.Abstractions.PhotoSize.Medium,
// AllowCropping = true,
// Name = "test.jpg"
//});
//var file = await CrossMedia.Current.TakePhotoAsync(new Plugin.Media.Abstractions.StoreCameraMediaOptions());
string FileName = "photo" + DateTime.Now.Ticks.ToString() + ".png";
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Name = FileName,
PhotoSize = Plugin.Media.Abstractions.PhotoSize.Small,
CompressionQuality = 92
};
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
if (file == null)
{
return;
}
await DisplayAlert("File Location", file.Path, "OK");
image.Source = ImageSource.FromStream(() =>
{
var stream = file.GetStream();
file.Dispose();
return(stream);
});
}
async void Button_Clicked(System.Object sender, System.EventArgs e)
{
var options = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
options.DefaultCamera = Plugin.Media.Abstractions.CameraDevice.Rear;
this.image.IsVisible = false;
using (var result = await CrossMedia.Current.TakePhotoAsync(options)) {
if (result != null && result.GetStream() != null)
{
Debug.WriteLine(result.Path);
Debug.WriteLine(result.AlbumPath);
Debug.WriteLine(result.GetStream() == null);
this.image.Source = ImageSource.FromStream(result.GetStream);
this.image.IsVisible = true;
}
}
}
private async void tirarFoto()
{
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "Cupons",
Name = $"{DateTime.UtcNow}.jpg",
//SaveToAlbum = true
};
// Take a photo of the business receipt.
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
if (file == null)
{
return;
}
//DisplayAlert("Salvar em", file.Path, "OK");
var path = file.Path;
_fotoPessoal.Source = ImageSource.FromStream(() =>
{
var stream = file.GetStream();
file.Dispose();
return(stream);
});
_fotoPessoal.Source = path;
_fotoPessoal.WidthRequest = TelaUtils.LarguraSemPixel * 0.5;
_fotoPessoal.HeightRequest = TelaUtils.LarguraSemPixel * 0.5;
}
else
{
DisplayAlert("Dispositivo não possiu camera ou camera desativada", null, "OK");
}
}
public async void TakePhoto()
{
await CrossMedia.Current.Initialize();
if (!CrossMedia.Current.IsCameraAvailable)
{
return;
}
var options = new Plugin.Media.Abstractions.StoreCameraMediaOptions();
var photo = await CrossMedia.Current.TakePhotoAsync(options);
if (photo != null)
{
Images.Insert(0, ImageSource.FromStream(() =>
{
var stream = photo.GetStream();
photo.Dispose();
return(stream);
}));
RaisePropertyChanged(nameof(Images));
}
}
public override async void ViewWillAppear(bool animated)
{
base.ViewWillAppear(animated);
Console.WriteLine(CrossMedia.IsSupported);
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
// Supply media options for saving our photo after it's taken.
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "Receipts",
Name = $"{DateTime.UtcNow}.jpg"
};
// Take a photo of the business receipt.
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
if (CrossMedia.Current.IsPickPhotoSupported)
{
var photo = await CrossMedia.Current.PickPhotoAsync();
}
}
}
//TakePic method for button
public async void TakePic(object sender, EventArgs args)
{
if (CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported)
{
//Supply media options for saving our photo after it's taken.
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "Receipts",
Name = $"{DateTime.UtcNow}.jpg"
};
//Get chosen file stream
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
var fileStream = file.GetStream();
//Display loading
await DisplayAlert("Loading Result", "Please wait", "OK");
//Send file to ComputerVision
var result = await GetImageDescriptionAsync(fileStream);
await DisplayAlert("Detection Result", "I think it's " + result.Description.Captions[0].Text, "OK");
}
}
public virtual async void LoadImages(String[] imageNames, String[] labels = null)
{
#if __ANDROID__ || __IOS__
await CrossMedia.Current.Initialize();
#endif
#if (__UNIFIED__ && !__IOS__) //NETFX or Xamarin Mac
//use default images
InvokeOnImagesLoaded(imageNames);
#else
String[] mats = new String[imageNames.Length];
for (int i = 0; i < mats.Length; i++)
{
String pickImgString = "Use Image from";
if (labels != null && labels.Length > i)
{
pickImgString = labels[i];
}
bool haveCameraOption =
(CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported);
bool havePickImgOption =
CrossMedia.Current.IsPickVideoSupported;
String action;
if (haveCameraOption & havePickImgOption)
{
action = await DisplayActionSheet(pickImgString, "Cancel", null, "Default", "Photo Library",
"Camera");
}
else if (havePickImgOption)
{
action = await DisplayActionSheet(pickImgString, "Cancel", null, "Default", "Photo Library");
}
else
{
action = "Default";
}
if (action.Equals("Default"))
{
#if __ANDROID__
FileInfo fi = Emgu.TF.Util.AndroidFileAsset.WritePermanantFileAsset(Forms.Context, imageNames[i], "tmp",
Emgu.TF.Util.AndroidFileAsset.OverwriteMethod.AlwaysOverwrite);
mats[i] = fi.FullName;
#else
mats[i] = imageNames[i];
#endif
}
else if (action.Equals("Photo Library"))
{
var photoResult = await CrossMedia.Current.PickPhotoAsync();
if (photoResult == null) //cancelled
{
return;
}
mats[i] = photoResult.Path;
}
else if (action.Equals("Camera"))
{
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "Emgu",
Name = $"{DateTime.UtcNow}.jpg"
};
var takePhotoResult = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
if (takePhotoResult == null) //cancelled
{
return;
}
mats[i] = takePhotoResult.Path;
}
}
InvokeOnImagesLoaded(mats);
#endif
}
public virtual async void LoadImages(String[] imageNames, String[] labels = null)
{
#if __MACOS__
Mat[] mats = new Mat[imageNames.Length];
for (int i = 0; i < mats.Length; i++)
{
mats[i] = CvInvoke.Imread(imageNames[i], ImreadModes.Color);
}
InvokeOnImagesLoaded(mats);
#else
#if __ANDROID__ || __IOS__
await CrossMedia.Current.Initialize();
#endif
Mat[] mats = new Mat[imageNames.Length];
for (int i = 0; i < mats.Length; i++)
{
String pickImgString = "Use Image from";
if (labels != null && labels.Length > i)
{
pickImgString = labels[i];
}
bool haveCameraOption;
bool havePickImgOption;
if (Emgu.Util.Platform.OperationSystem == Emgu.Util.Platform.OS.Windows)
{
//CrossMedia is not implemented on Windows.
haveCameraOption = false;
havePickImgOption = true; //We will provide our implementation of pick image option
}
else
{
haveCameraOption =
(CrossMedia.Current.IsCameraAvailable && CrossMedia.Current.IsTakePhotoSupported);
havePickImgOption =
CrossMedia.Current.IsPickVideoSupported;
}
String action;
List <String> options = new List <string>();
options.Add("Default");
if (havePickImgOption)
{
options.Add("Photo Library");
}
if (haveCameraOption)
{
options.Add("Photo from Camera");
}
#if __IOS__
if (this.HasCameraOption && haveCameraOption)
{
options.Add("Camera");
}
#endif
if (Emgu.Util.Platform.OperationSystem == Emgu.Util.Platform.OS.Windows && Emgu.Util.Platform.ClrType != Emgu.Util.Platform.Clr.NetFxCore)
{
options.Add("Camera");
}
if (options.Count == 1)
{
action = "Default";
}
else
{
action = await DisplayActionSheet(pickImgString, "Cancel", null, options.ToArray());
if (action == null) //user clicked outside of action sheet
{
return;
}
}
/*
* if (haveCameraOption & havePickImgOption)
* {
* action = await DisplayActionSheet(pickImgString, "Cancel", null, "Default", "Photo Library",
* "Photo from Camera");
* if (action == null) //user clicked outside of action sheet
* return;
* }
* else if (havePickImgOption)
* {
* action = await DisplayActionSheet(pickImgString, "Cancel", null, "Default", "Photo Library");
* if (action == null) //user clicked outside of action sheet
* return;
* }
* else
* {
* action = "Default";
* }*/
if (action.Equals("Default"))
{
#if __ANDROID__
mats[i] = Android.App.Application.Context.Assets.GetMat(imageNames[i]);
#else
if (!File.Exists(imageNames[i]))
{
throw new FileNotFoundException(String.Format("File {0} do not exist.", imageNames[i]));
}
mats[i] = CvInvoke.Imread(imageNames[i], ImreadModes.AnyColor);
#endif
}
else if (action.Equals("Photo Library"))
{
#if __ANDROID__ || __IOS__ || NETFX_CORE
var photoResult = await CrossMedia.Current.PickPhotoAsync();
if (photoResult == null) //canceled
{
return;
}
mats[i] = CvInvoke.Imread(photoResult.Path);
#else
if (Emgu.Util.Platform.OperationSystem == OS.Windows)
{
// our implementation of pick image
using (System.Windows.Forms.OpenFileDialog dialog = new System.Windows.Forms.OpenFileDialog())
{
dialog.Multiselect = false;
dialog.Title = "Select an Image File";
dialog.Filter = "Image | *.jpg;*.jpeg;*.png;*.bmp;*.gif | All Files | *";
if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
mats[i] = CvInvoke.Imread(dialog.FileName, ImreadModes.AnyColor);
}
else
{
return;
}
}
}
else
{
var file = await CrossMedia.Current.PickPhotoAsync();
using (Stream s = file.GetStream())
using (MemoryStream ms = new MemoryStream())
{
s.CopyTo(ms);
byte[] data = ms.ToArray();
Mat m = new Mat();
CvInvoke.Imdecode(data, ImreadModes.Color, m);
mats[i] = m;
}
}
#endif
}
else if (action.Equals("Photo from Camera"))
{
#if __ANDROID__ || __IOS__ || NETFX_CORE
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "Emgu",
Name = $"{DateTime.UtcNow}.jpg"
};
var takePhotoResult = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
if (takePhotoResult == null) //cancelled
{
return;
}
mats[i] = CvInvoke.Imread(takePhotoResult.Path);
#else
var mediaOptions = new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
Directory = "Emgu",
Name = $"{DateTime.UtcNow}.jpg"
};
var file = await CrossMedia.Current.TakePhotoAsync(mediaOptions);
using (Stream s = file.GetStream())
using (MemoryStream ms = new MemoryStream())
{
s.CopyTo(ms);
byte[] data = ms.ToArray();
Mat m = new Mat();
CvInvoke.Imdecode(data, ImreadModes.Color, m);
mats[i] = m;
}
#endif
}
else if (action.Equals("Camera"))
{
mats = new Mat[0];
}
}
InvokeOnImagesLoaded(mats);
#endif
}
public async Task ExecuteTakePictureCommand(string isSelfie)
{
if (IsBusy)
{
return;
}
IsBusy = true;
TakePictureCommand.ChangeCanExecute();
var error = false;
try
{
if (!CrossMedia.Current.IsCameraAvailable || !CrossMedia.Current.IsTakePhotoSupported)
{
var page = new ContentPage();
IsBusy = false;
TakePictureCommand.ChangeCanExecute();
await page.DisplayAlert("No Camera", ":( No camera avaialble.", "OK");
return;
}
var opts = new Plugin.Media.Abstractions.StoreCameraMediaOptions()
{
Directory = "Sample",
Name = "test.jpg"
};
if (isSelfie.Equals("true"))
{
opts.DefaultCamera = Plugin.Media.Abstractions.CameraDevice.Front;
}
var file = await CrossMedia.Current.TakePhotoAsync(opts);
if (file == null)
{
IsBusy = false;
TakePictureCommand.ChangeCanExecute();
return;
}
MyImageSource = ImageSource.FromStream(() =>
{
var stream = file.GetStream();
return(stream);
});
}
catch
{
error = true;
}
if (error)
{
var page = new ContentPage();
await page.DisplayAlert("Error", "Unable to Take Picture", "OK");
}
IsBusy = false;
TakePictureCommand.ChangeCanExecute();
}