public override void ViewDidLoad()
{
base.ViewDidLoad();
var aButton = new UIBarButtonItem(UIBarButtonSystemItem.Add, (s, e) =>
{
//create a new instance of the picker view controller
var picker = ELCImagePickerViewController.Create(15);
//Provide custom labels for the picker
//var picker = ELCImagePickerViewController.Create(4, "Choisir un album", "Choisir Photo", "Retour", "choix Photo");
//picker.InitCustomLabel();
//set the maximum number of images that can be selected
//picker.MaximumImagesCount = 15;
//setup the handling of completion once the items have been picked or the picker has been cancelled
picker.Completion.ContinueWith(t =>
{
//execute any UI code on the UI thread
this.BeginInvokeOnMainThread(() =>
{
//dismiss the picker
picker.DismissViewController(true, null);
if (t.IsCanceled || t.Exception != null)
{
//cancelled or error
}
else
{
//get the selected items
var items = t.Result as List <AssetResult>;
foreach (AssetResult aItem in items)
{
mResults.Add(aItem);
}
TableView.ReloadData();
}
});
});
this.PresentViewController(picker, true, null);
});
this.NavigationItem.RightBarButtonItem = aButton;
}
//Get photos from album/gallery
public async Task UsePhotoGalleryAsync()
{
var picker = ELCImagePickerViewController.Create(15);
SelectedImages = new ObservableCollection <DeliveryImage>();
picker.MaximumImagesCount = 15;
// TODO: Have an alert if picked pictures are more that picker.MaximumImagesCount
var topController = UIApplication.SharedApplication.KeyWindow.RootViewController;
while (topController.PresentedViewController != null)
{
topController = topController.PresentedViewController;
}
topController.PresentViewController(picker, true, null);
await picker.Completion.ContinueWith(t =>
{
picker.BeginInvokeOnMainThread(() =>
{
//dismiss the picker
picker.DismissViewController(true, null);
if (t.IsCanceled || t.Exception != null)
{
// User canceled selection action
return;
}
else
{
foreach (var item in t.Result)
{
var path = ImageHelper.GetPathToImage(item.Image, item.Name);
//TODO: make this it's own function since camera action also needs to do this
var imageBytes = ImageHelper.ImageToBinary(path);
var newImage = ImageSource.FromStream(() => new MemoryStream(imageBytes));
SelectedImages.Add(new DeliveryImage {
ImagePath = path, Source = newImage, OrgImage = imageBytes
});
CleanPath(path);
}
//Send images back
MessagingCenter.Send((App)Xamarin.Forms.Application.Current, "SelectedImages", SelectedImages);
}
});
});
}
public async Task OpenGallery()
{
var picker = ELCImagePickerViewController.Create(15);
picker.MaximumImagesCount = 15;
var topController = UIApplication.SharedApplication.KeyWindow.RootViewController;
while (topController.PresentedViewController != null)
{
topController = topController.PresentedViewController;
}
topController.PresentViewController(picker, true, null);
await picker.Completion.ContinueWith(t =>
{
picker.BeginInvokeOnMainThread(() =>
{
//dismiss the picker
picker.DismissViewController(true, null);
if (t.IsCanceled || t.Exception != null)
{
}
else
{
List <string> images = new List <string>();
var items = t.Result as List <AssetResult>;
foreach (var item in items)
{
var path = Save(item.Image, item.Name);
images.Add(path);
//CleanPath(path);
}
MessagingCenter.Send <App, List <string> >((App)Xamarin.Forms.Application.Current, "ImagesSelected", images);
}
});
});
}
//int? IGallery.ImagesSelection
//{
// get
// {
// return Convert.ToInt32(Xamarin.Forms.Application.Current.Properties["ImagesSelection"]);
// }
// set
// {
// Xamarin.Forms.Application.Current.Properties["ImagesSelection"] = value;
// }
//}
public void OpenGallery(int imageselection)
{
try
{
var picker = ELCImagePickerViewController.Create(imageselection, "Select Images");
int Totalsize = 0;
bool IsValid = true;
picker.Completion.ContinueWith(t =>
{
picker.BeginInvokeOnMainThread(() =>
{
lstBytes = new List <byte[]>();
_imagename = new List <string>();
picker.DismissViewController(true, null);
#region
if (t.IsCanceled || t.Exception != null)
{
//cancelled or error
}
else
{
//get the selected items
var items = t.Result as List <AssetResult>;
foreach (AssetResult aItem in items)
{
string Extension = aItem.Name.Substring(aItem.Name.IndexOf('.') + 1, aItem.Name.Length - aItem.Name.IndexOf('.') - 1);
UIImage objUIImage = aItem.Image;
NSData imagedata = new NSData();
if (Extension.ToLower() == "png")
{
imagedata = objUIImage.AsPNG();
}
else
{
imagedata = objUIImage.AsJPEG();
}
byte[] bytes = new byte[imagedata.Length];
Totalsize += bytes.Length;
if (Totalsize > 10000000)
{
IsValid = false;
MessagingCenter.Send <App, string>((App)Xamarin.Forms.Application.Current, "imagevalidation", "Image Cannot be Greater than 10 MB");
break;
}
System.Runtime.InteropServices.Marshal.Copy(imagedata.Bytes, bytes, 0, Convert.ToInt32(imagedata.Length));
lstBytes.Add(bytes);
_imagename.Add(aItem.Name);
}
if (IsValid)
{
if (_imagename.Count > 0)
{
MessagingCenter.Send <App, List <byte[]> >((App)Xamarin.Forms.Application.Current, "ImagesSelected", lstBytes);
MessagingCenter.Send <App, List <string> >((App)Xamarin.Forms.Application.Current, "ImagesSelectedName", _imagename);
}
else
{
MessagingCenter.Send <App, string>((App)Xamarin.Forms.Application.Current, "exception", "");
}
}
}
#endregion
});
});
var topController = UIApplication.SharedApplication.KeyWindow.RootViewController;
while (topController.PresentedViewController != null)
{
topController = topController.PresentedViewController;
}
topController.PresentViewController(picker, true, null);
}
catch (Exception ex)
{
throw;
}
}
