using System;  
using System.IO;  
using Xamarin.Forms;  
using XamarinForms_Files;  
using XamarinForms_Files.Droid;  
[assembly: Dependency(typeof(FileHelper))]  
namespace XamarinForms_Files.Droid {  
    public class FileHelper: IFileReadWrite {  
        public void WriteData(string filename, string data) {  
            var documentsPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);  
            var filePath = Path.Combine(documentsPath, filename);  
            File.WriteAllText(filePath, data);  
        }  
        public string ReadData(string filename) {  
            var documentsPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);  
            var filePath = Path.Combine(documentsPath, filename);  
            return File.ReadAllText(filePath);  
        }  
    }  
}