Question

To add the specified image to the user’s Camera Roll album in Obj-C can use UIImageWriteToSavedPhotosAlbum method.

What is equivalent on MonoTouch or how can i do that?

Answer 1

The UIImageWriteToSavedPhotosAlbum function maps to UIImage.SaveToPhotosAlbum.

Craig has a sample showing how to use this API on his blog.

EDIT: The simple sample code: (photo is UIImage)

photo.SaveToPhotosAlbum((image, error) => {
    if (error == null)
        new UIAlertView("", "Saved", null, "OK", null).Show();
    else
        new UIAlertView("", "Failed", null, "OK", null).Show();
});