prs/prs.mobile.new/PRS.Mobile.Droid/MainActivity.cs

using System;
using System.Linq;
using System.Threading.Tasks;
using Android;
using Android.App;
using Android.Content;
using Android.Content.PM;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
using InABox.Mobile.Android;
using Plugin.LocalNotification;
using Xamarin.Essentials;
using Xamarin.Forms;

namespace PRS.Mobile.Droid
{
    [Activity(
        Label = "PRS.Mobile", 
        Theme = "@style/MainTheme", 
        MainLauncher = true, 
        ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation
        )]
    
    [IntentFilter(new[] { Android.Content.Intent.ActionView },
        AutoVerify = true,
        Categories = new[]
        {
            Android.Content.Intent.CategoryDefault,
            Android.Content.Intent.CategoryBrowsable,
        },
        DataScheme = "http",
        DataPathPrefix = "/open",
        DataHost = "www.prsmobile.com")
    ]
    
    public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
    {
        
        private readonly string[] Permissions =
        {
            Manifest.Permission.Bluetooth,
            Manifest.Permission.BluetoothAdmin,
            Manifest.Permission.AccessCoarseLocation,
            Manifest.Permission.AccessFineLocation,
            Manifest.Permission.BluetoothScan,
            Manifest.Permission.BluetoothAdvertise,
            Manifest.Permission.BluetoothConnect,
            Manifest.Permission.ReadMediaVideo,
            Manifest.Permission.ReadMediaAudio,
            Manifest.Permission.ReadMediaImages,
            Manifest.Permission.Flashlight,
        };
        
        protected override void OnCreate(Bundle savedInstanceState)
        {
            if (!string.IsNullOrWhiteSpace(Intent?.Data?.EncodedAuthority))
            {
                string s = Intent?.Data?.Path ?? "";
                App.LaunchParameters = (s.Length > 6) ? s.Remove(0, 6) : "";
            }
            
            CheckPermissions();

            DependencyService.Register<Version_Android>();
            
            TabLayoutResource = Resource.Layout.Tabbar;
            ToolbarResource = Resource.Layout.Toolbar;
            
            AppDomain.CurrentDomain.UnhandledException += CurrentDomainOnUnhandledException;
            TaskScheduler.UnobservedTaskException += TaskSchedulerOnUnobservedTaskException;

            base.OnCreate(savedInstanceState);
            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
            
            // https://github.com/Redth/ZXing.Net.Mobile
            ZXing.Net.Mobile.Forms.Android.Platform.Init();
            
            // https://github.com/Baseflow/XF-Material-Library
            XF.Material.Droid.Material.Init(this, savedInstanceState);
           
            LocalNotificationCenter.CreateNotificationChannel(new Plugin.LocalNotification.AndroidOption.NotificationChannelRequest
            {
                Importance = Plugin.LocalNotification.AndroidOption.AndroidImportance.Max,
                LockScreenVisibility = Plugin.LocalNotification.AndroidOption.AndroidVisibilityType.Public,
                ShowBadge = true,
                EnableVibration = true,
                Sound = "requiitemadded.mp3"
            });

            LocalNotificationCenter.NotifyNotificationTapped(Intent);
            
            // https://learn.microsoft.com/en-au/xamarin/essentials/get-started?tabs=windows%2Candroid
            Xamarin.Essentials.Platform.Init(this, savedInstanceState);

            Syncfusion.XForms.Android.PopupLayout.SfPopupLayoutRenderer.Init();

            Xamarin.FormsMaps.Init(this, savedInstanceState);

            ZXing.Net.Mobile.Forms.Android.Platform.Init();

            XF.Material.Droid.Material.Init(this, savedInstanceState);

            LoadApplication(new App());
            
            // FV 23-07-07 Not sure what this does - can we strip it out?
            // Window.SetSoftInputMode(Android.Views.SoftInput.AdjustResize);
            
        }
        
        protected override void OnNewIntent(Intent intent)
        {
            LocalNotificationCenter.NotifyNotificationTapped(intent);
            base.OnNewIntent(intent);
        }

        public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Android.Content.PM.Permission[] grantResults)
        {
            //at this point in time, xamarin essentials is unable to ask for WRITE_MEDIA_STORAGE from the user, so it never gets granted
            //has to be set manually when asked for, in order for API 33 on Android 13 to work
            //https://github.com/xamarin/Essentials/issues/2041
            if (permissions.Any(x => x == "WRITE_MEDIA_STORAGE"))
            {
                var grants = new Permission[] { Permission.Granted };
                Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grants);
            }
            else
            {
                Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);
            }

            base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
        }

        private async void CheckPermissions()
        {
            
            bool minimumPermissionsGranted = true;

            foreach (string permission in Permissions)
            {
                if (CheckSelfPermission(permission) != Permission.Granted)
                {
                    minimumPermissionsGranted = false;
                }
            }

            // If any of the minimum permissions aren't granted, we request them from the user
            if (!minimumPermissionsGranted)
            {
                RequestPermissions(Permissions, 0);
            }

        }

        #region Error handling
        
        private static void TaskSchedulerOnUnobservedTaskException(object sender, UnobservedTaskExceptionEventArgs args)
        {
            LogUnhandledException("TaskScheduler", args.Exception?.GetType(), args.Exception);
        }

        private static void CurrentDomainOnUnhandledException(object sender, UnhandledExceptionEventArgs args)
        {
            LogUnhandledException("CurrentDomain", args.ExceptionObject?.GetType(), args.ExceptionObject);
        }

        private static void LogUnhandledException(String source, Type type, object exceptionobject)
        {
            if (exceptionobject is Exception exception)
                MobileLogging.Log(exception, source);
            else
                MobileLogging.Log($"{source}: {type?.Name ?? "NULL"} -> {exceptionobject}");
        }

        #endregion
        
    }
}