Xamarin Forms Labs Camera - Permanently Saving Images and Calling Them - xamarin.forms

Question

I got the camera function to work and it displays the image on the page like i asked it too. But is there a way to permanently save the image on your phone or somewhere else and then call it?
Thank you so much

Answer 1

Here's some code that works for me.
IFileAccess is my wrapper around System.IO.File functions such as file open, write, check if exsists. If you're making your own file service look up Xamarin.Forms.Labs.Resolver and how to use it; if you're using shared Forms project type you can access System.IO.File directly from the Forms project. Assuming that's clear, the following
var fileAccess = Resolver.Resolve<IFileAccess> ();
mediaPicker.SelectPhotoAsync (new CameraMediaStorageOptions{ MaxPixelDimension = 1024 })
.ContinueWith(t=>{
if (!t.IsFaulted && !t.IsCanceled) {
var mediaFile = t.Result;
var fileAccess = Resolver.Resolve<IFileAccess> ();
string imageName = "IMG_" + DateTime.Now.ToString ("yy-MM-dd_HH-mm-ss") + ".jpg";
// save the media stream to a file
fileAccess.WriteStream (imageName, mediaFile.Source);
// use the stored file for ImageSource
ImageSource imgSource = ImageSource.FromFile (fileAccess.FullPath (imageName));
imgInXAML.Source = imgSource;
}
});
Further detail on IFileAccess.
In your Forms project create an interface like this:
public interface IFileAccess
{
bool Exists (string filename);
string FullPath(string filename);
void WriteStream (string filename, Stream streamIn);
}
In your iOS or Android or Shared project add a class FileAccess that implements IFileAccess:
public class FileAccess : IFileAccess
{
public bool Exists (string filename)
{
var filePath = GetFilePath (filename);
if (File.Exists (filePath)) {
FileInfo finf = new FileInfo (filePath);
return finf.Length > 0;
} else
return false;
}
public string FullPath (string filename)
{
var filePath = GetFilePath (filename);
return filePath;
}
static string GetFilePath (string filename)
{
var documentsPath = Environment.GetFolderPath (Environment.SpecialFolder.Personal);
var filePath = Path.Combine (documentsPath, filename);
return filePath;
}
public void WriteStream (string filename, Stream streamIn)
{
var filePath = GetFilePath (filename);
using (var fs = File.Create (filePath)) {
streamIn.CopyTo (fs);
}
}
}
If you're already using Xamarin.Forms.Labs.Resolver then add only the line to register the service, otherwise in your iOS or Android project find a call to Forms.Init() and right before it add
var resolverContainer = new SimpleContainer ();
resolverContainer.Register<IFileAccess> (t => new FileAccess ()); // maybe just this line
Resolver.SetResolver (resolverContainer.GetResolver ());