How to save serialized objects on the user's device in JSON format in an android application on Xamarin?

Question

Android

I'm trying to do it with simple methods, but it says "Access to the path /data.json is denied".
How can I bypass protection?
Made it a regular entry
File.WriteAllText("data.json", serializeString);

Answer 1

1 add permission to manifest

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

https://docs.microsoft.com/en-us/xamarin/android/p...
Getting the path in the shared code

public static string DbPath => DependencyService.Get<ISqLite>().GetDatabasePath("user.db");

Implementation for android, for other platforms a little differently

#region License
// Разработано: Коротенко Владимиром Николаевичем (Vladimir N. Korotenko)
// email: [email protected]
// skype:vladimir-korotenko 
// https://vkorotenko.ru
// Создано:  09.04.2019 22:38
#endregion
using System;
using System.IO;
using SpecialForcesDirectory.Code;
using SpecialForcesDirectory.Droid;
using Xamarin.Forms;

[assembly: Dependency(typeof(SQLite_Android))]
namespace SpecialForcesDirectory.Droid
{
    public class SQLite_Android : ISqLite
    {
        public SQLite_Android() { }
        public string GetDatabasePath(string sqliteFilename)
        {
            string documentsPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
            var path = Path.Combine(documentsPath, sqliteFilename);
            return path;
        }
    }
}