CODEWITHSUNDEEP
c#xamarin.forms
Abhirup Ghosh
Abhirup Ghosh

Reputation: 135

Upload File using Xamarin Filepicker plugin

I am trying to upload a pdf file using the nuget package filepicker.
I’m able to getting the file name & file local path. But when I am trying to convert the file to a byte array I am getting an error.

It's my pcl Code-

public interface ILoclFileProvider
{
    byte[] GetFileBytes(string path);
}

public static class FileUtility
{
    public static ILoclFileProvider FileSystem { get; set; }

    public static void SetUp(ILoclFileProvider fs)
    {
        FileSystem = fs;
    }
}

This is my Droid Project code-

public class LocalFileProvider_Droid : ILoclFileProvider
{
    public byte[] GetFileBytes(string filePath)
    {
        return File.ReadAllBytes(filePath);
    }
}

and in my pcl project I'm calling this-

var bytes = FileUtility.FileSystem.GetFileBytes(filePath);

and I'm getting an error-

Object reference not set to an instance of an object.

what is wrong in my code?

Upvotes: 1

Views: 697

Answers (1)

Gerald Versluis
Gerald Versluis

Reputation: 34013

I think you are calling the DependencyService wrong. Try this:

var bytes = DependencyService.Get<ILoclFileProvider>().GetFileBytes(filePath);

Also make sure you registered it through the right attribute above the namespace in your Android project.

[assembly: Xamarin.Forms.Dependency (typeof (LocalFileProvider_Droid))]

This line makes sure that the dependency is registered within the Xamarin runtime. For more information on the DependencyService, check out these new Microsoft docs pages.

Upvotes: 1

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