PhotoChooserTask cant crop big photo

Question

When I want to pick photo from my library, and initially do something with this photo I want to crop it and resize to 300x300. Everything is OK, until I choose a big photo.

When I pick a big image (10000x6000) PhotoChooserTask does nothing (from the user's point of view), PhotoChooserTask just crashes (not the application). Then when I try picking another one I get "Not allowed to call Show() multiple times before an invocation returns" exception.

It seems PhotoChooserTask still has the previous object inside, and I don't know how to dispose or clear PhotoChooserTask.

PS. without setting

chooser.PixelHeight = 300;
chooser.PixelWidth = 300;

Photo will set, and everything is ok.

PS2.

Samsung ATIV S does not have a problem. Only nokia 1320 ,520 and 530

PhotoChooserTask chooser = new PhotoChooserTask();

try
{
    chooser.ShowCamera = true;
    chooser.PixelHeight = 300;
    chooser.PixelWidth = 300;

    chooser.Completed += (s, result) =>
    {
        if (result.Error != null){ return; }
        if (result.ChosenPhoto != null)
        {
           var bitmap = new BitmapImage();
           bitmap.SetSource(result.ChosenPhoto);
           Service.uploadPhoto(receiver, (ImageSource)bitmap);
        }
    };
    chooser.Show();
 }
 catch (Exception ex)
 {
     MessageBox.Show(ex.Message);
 }

When the photo is big and height is set the debugger doesn't enters inside chooser.Completed

score 1 · Answer 1 · answered Jan 20 '15 at 16:10

1

The image size is probably the problem.

An image of 10000x6000 will take approximately 240MB in memory itself (10000 * 6000 * 4 bytes per pixel). That ammount of memory is probably causing the app using the PhotoChooserTask to crash and not to return anything to your app.

answered Jan 20 '15 at 16:10

meneses.pt

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Yes, but when I don't set PixelHight and PixelWidth on chooser(thats means, dont initial crop/resize image inside PhotoChooserTask) then everything is ok. I am ok with this that I can't set such big photo, but user can do everything, so how can I dispose PhotoChooserTask to let user choose another one? Because if PhotoChooserTask crush user can't use again PhotoChooserTask until he restart my Application. – Jacek Grzelaczyk Jan 21 '15 at 07:57

score 1 · Answer 2 · answered Jan 29 '15 at 12:08

A possible solution is to first save the chosen photo into a jpeg of lower quality or in the same resolution but compressing it using High Compression methods like SavePng() method in Cimbalino Phone Toolkit and then crop the Image.

I use it to convert 240mb Image to 8mb then Apply the Effects on it.

PhotoChooserTask cant crop big photo

2 Answers2