Open app settings on iOS/Android using a Dependency Service

ISettingsAppLauncher.cs

namespace MyCoolMobileApp.Services.DependencyServices
{
    public interface ISettingsAppLauncher
    {
        void LaunchSettingsApp(string appBundleId);
    }
}

SettingsAppLauncher_Android.cs

using System.Diagnostics;
using Android.Content;
using Plugin.CurrentActivity;       // https://github.com/jamesmontemagno/CurrentActivityPlugin
using MyCoolMobileApp.Droid.Services.DependencyServices;
using MyCoolMobileApp.Services.DependencyServices;
using Xamarin.Forms;

[assembly: Dependency(typeof(SettingsAppLauncher_Android))]
namespace MyCoolMobileApp.Droid.Services.DependencyServices
{
    public class SettingsAppLauncher_Android : ISettingsAppLauncher
    {
        public void LaunchSettingsApp(string  appBundleId)
        {
            Debug.WriteLine($"**** {this.GetType().Name}.{nameof(LaunchSettingsApp)}");
            var intent = new Intent(Android.Provider.Settings.ActionApplicationDetailsSettings);
            intent.AddFlags(ActivityFlags.NewTask);
            var uri = Android.Net.Uri.FromParts("package", appBundleId, null);
            intent.SetData(uri);
            CrossCurrentActivity.Current.AppContext.StartActivity(intent);
        }
    }
}

SettingsAppLauncher_iOS.cs

using System.Diagnostics;
using Foundation;
using MyCoolMobileApp.iOS.Services.DependencyServices;
using MyCoolMobileApp.Services.DependencyServices;
using UIKit;
using Xamarin.Forms;

[assembly: Dependency(typeof(SettingsAppLauncher_iOS))]
namespace MyCoolMobileApp.iOS.Services.DependencyServices
{
    public class SettingsAppLauncher_iOS : ISettingsAppLauncher
    {
        public void LaunchSettingsApp(string appBundleId)
        {
            Debug.WriteLine($"**** {this.GetType().Name}.{nameof(LaunchSettingsApp)}");
            var url = new NSUrl($"app-settings:{appBundleId}");
            UIApplication.SharedApplication.OpenUrl(url);
        }
    }
}

Thanks!

@VoterClopper

Xamarin.Essentials.AppInfo.ShowSettingsUI(); seems to work.

Awesome, @VoterClopper... I don't think that was working back when I wrote this up, but that will make things massively simpler!