Need expert coder in C# & Xamarin to fix 3 bugs in code

I have a small 3 page mobile app. I am trying to allow user to snap a pic and save it to AWS S3 bucket. I have code that I used on windows app but it's not working on my Droid app that I created using Visual Studio 2015, Xamarin, and C#.

The 3 deliverables are as follows:

1. Allow user to save picture from phone camera to AWS

2. Make REST call to AWS and return the URL of the file that was just uploaded.

3. Make REST call to AWS and return List of files in bucket.

Amazon Web Services 安卓 C# 编程 移动应用开发 Xamarin

项目ID： #14616865

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