How to dismiss progress dialog after the toast message show or after the system response in xamarin android

Question

This code is running, when I clicked the smsBtn the progress dialog will show, but the problem is when I place the progress.Dismiss() after or before the toast message the progress dialog will not show. I want the progress dialog automatically close or dismiss after the toast message will pop up or after the system response..

Note: progress dialog is running, but this private ProgressDialog progress; ProgressDialog have a green underline and when I hover the warning say ProgressDialog is obsolete this class is obsolete in this android platform and if I used this Android.App.ProgressDialog.progress the system produce an error like this the name Android.App.ProgressDialog.progress does not exist in the current content.

MainActivity.cs

using Android.App;
using Android.OS;
using Android.Support.V7.App;
using Android.Runtime;
using Android.Widget;
using Android.Content.PM;
using Android.Telephony;
using System;
using Android;
using Android.Content;
using Android.Support.V4.Content;
using Android.Support.V4.App;
using Android.Util;
using Android.Support.Design.Widget;
using Android.Views;
using Android.Text;

namespace MhylesOrderingApp
{
    [Activity(Label = "@string/app_name", Theme = "@style/AppTheme", MainLauncher = true)]
    public class MainActivity : AppCompatActivity, ActivityCompat.IOnRequestPermissionsResultCallback
    {
        static readonly int REQUEST_SENDSMS = 0;
        private SmsManager _smsManager;
        private BroadcastReceiver _smsSentBroadcastReceiver, _smsDeliveredBroadcastReceiver;
        View layout;
        private ProgressBar spinner;
        private ProgressDialog progress;
        //public virtual ViewStates Visibility { get; set; }
        //SMSSentReceiver receiver;
        //private SmsManager smsManager;
        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            // Set our view from the "main" layout resource
            SetContentView(Resource.Layout.activity_main);

            layout = FindViewById(Resource.Id.sample_main_layout);
            //spinner = (ProgressBar)FindViewById(Resource.Id.progressBar1);
            var smsBtn = FindViewById<Button>(Resource.Id.btnSend);
            var phoneNum = FindViewById<EditText>(Resource.Id.phoneNum);
            var smsDate = FindViewById<EditText>(Resource.Id.txtDate);
            var smsCustomer = FindViewById<EditText>(Resource.Id.txtCustomer);
            var smsAddress = FindViewById<EditText>(Resource.Id.txtAddress);
            var smsCustNo = FindViewById<EditText>(Resource.Id.txtCustomerNo);
            var smsOrderProd = FindViewById<EditText>(Resource.Id.txtOrderedProduct);
            var smsProdQty = FindViewById<EditText>(Resource.Id.txtProductQty);
            var smsUnit = FindViewById<EditText>(Resource.Id.txtUnit);
            var smsAgentName = FindViewById<EditText>(Resource.Id.txtAgentName);

            //spinner.Visibility = (ViewStates.Gone);
            progress = new ProgressDialog(this);
            progress.Indeterminate = true;
            progress.SetProgressStyle(Android.App.ProgressDialogStyle.Spinner);
            progress.SetMessage("Sending.. Please wait!");
            progress.SetCancelable(false);
            _smsManager = SmsManager.Default;

            //receiver = new SMSSentReceiver();
            //smsManager = SmsManager.Default;
            //IntentFilter intentFilter = new IntentFilter("SMS_SENT");
            //intentFilter.AddAction("android.permission.SEND_SMS");

            ////RegisterReceiver(receiver, intentFilter);
            //smsBtn.Click += (s, e) =>
            //{
            //    var phone = phoneNum.Text;
            //    var message = sms.Text;

            //    var piSent = PendingIntent.GetBroadcast(this, 0, new Android.Content.Intent("SMS_SENT"), 0);
            //    //var piDelivered = PendingIntent.GetBroadcast(this, 0, new Android.Content.Intent("SMS_DELIVERED"), 0);

            //    smsManager.SendTextMessage(phone, null, message, piSent, null);
            //};
            smsBtn.Click += (s, e) =>
            {
                progress.Show();
                if (TextUtils.IsEmpty(smsDate.Text) || TextUtils.IsEmpty(phoneNum.Text) || TextUtils.IsEmpty(smsCustomer.Text)
                    || TextUtils.IsEmpty(smsAddress.Text) || TextUtils.IsEmpty(smsCustNo.Text) || TextUtils.IsEmpty(smsOrderProd.Text)
                    || TextUtils.IsEmpty(smsProdQty.Text) || TextUtils.IsEmpty(smsUnit.Text) || TextUtils.IsEmpty(smsAgentName.Text))
                {
                    progress.Dismiss();
                    Toast.MakeText(this, "Please fill out all the fields", ToastLength.Short).Show();
                    return;
                }
                else
                {
                    var phone = phoneNum.Text;
                    var message = smsDate.Text + "|" + smsCustomer.Text + "|" + smsAddress.Text + "|" + smsCustNo.Text
                                  + "|" + smsOrderProd.Text + "|" + smsProdQty.Text + "|" + smsUnit.Text + "|" + smsAgentName.Text;

                    var piSent = PendingIntent.GetBroadcast(this, 0, new Intent("SMS_SENT"), 0);
                    var piDelivered = PendingIntent.GetBroadcast(this, 0, new Intent("SMS_DELIVERED"), 0);

                    if ((int)Build.VERSION.SdkInt < 23)
                    {
                        //spinner.Visibility = (ViewStates.Visible);
                        _smsManager.SendTextMessage(phone, null, message, piSent, piDelivered);
                        Toast.MakeText(this, "Sending Orders error! please restart the app", ToastLength.Short).Show();
                        return;
                    }
                    else
                    {
                        if (ActivityCompat.CheckSelfPermission(this, Manifest.Permission.SendSms) != (int)Permission.Granted)
                        {
                            // Permission is not granted. If necessary display rationale & request.
                            RequestSendSMSPermission();
                        }
                        else
                        {
                            // We have permission, go ahead and send SMS.
                            //spinner.Visibility = (ViewStates.Visible);
                            _smsManager.SendTextMessage(phone, null, message, piSent, piDelivered);
                        }
                    }

                }
                //_smsManager.SendTextMessage(phone, null, message, piSent, piDelivered);
            };
        }
        public override void OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Android.Content.PM.Permission[] grantResults)
        {
            Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);
            base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
        }
        public void RequestSendSMSPermission()
        {
            Log.Info("MainActivity", "Message permission has NOT been granted. Requesting permission.");
            if (ActivityCompat.ShouldShowRequestPermissionRationale(this, Manifest.Permission.SendSms))
            {
                Log.Info("MainActivity", "Displaying message permission rationale to provide additional context.");
                Snackbar.Make(layout, "Message permission is needed to send SMS.",
                    Snackbar.LengthIndefinite).SetAction("OK", new Action<View>(delegate (View obj) {
                        ActivityCompat.RequestPermissions(this, new String[] { Manifest.Permission.SendSms }, REQUEST_SENDSMS);
                    })).Show();
            }
            else
            {
                ActivityCompat.RequestPermissions(this, new String[] { Manifest.Permission.SendSms }, REQUEST_SENDSMS);
            }
        }

        //protected override void OnPause()
        //{
        //    base.OnPause();
        //    UnregisterReceiver(receiver);
        //}
        protected override void OnResume()
        {

            //spinner.Visibility = (ViewStates.Gone);
            base.OnResume();
            //spinner.setVisibility(View.GONE);
            _smsSentBroadcastReceiver = new SMSSentReceiver();
            _smsDeliveredBroadcastReceiver = new SMSDeliveredReceiver();

            RegisterReceiver(_smsSentBroadcastReceiver, new IntentFilter("SMS_SENT"));
            RegisterReceiver(_smsDeliveredBroadcastReceiver, new IntentFilter("SMS_DELIVERED"));
            //spinner.setVisibility(View.GONE);
        }

        protected override void OnPause()
        {
            base.OnPause();

            UnregisterReceiver(_smsSentBroadcastReceiver);
            UnregisterReceiver(_smsDeliveredBroadcastReceiver);
        }
    }
    //[BroadcastReceiver(Exported = true, Permission = "//receiver/@android:android.permission.SEND_SMS")]
    [BroadcastReceiver]
    public class SMSSentReceiver : BroadcastReceiver
    {
        public override void OnReceive(Context context, Intent intent)
        {
            switch ((int)ResultCode)
            {
                case (int)Result.Ok:
                    Toast.MakeText(Application.Context, "SMS has been sent", ToastLength.Short).Show();
                    break;
                case (int)SmsResultError.GenericFailure:
                    Toast.MakeText(Application.Context, "Generic Failure", ToastLength.Short).Show();
                    break;
                case (int)SmsResultError.NoService:
                    Toast.MakeText(Application.Context, "No Service", ToastLength.Short).Show();
                    break;
                case (int)SmsResultError.NullPdu:
                    Toast.MakeText(Application.Context, "Null PDU", ToastLength.Short).Show();
                    break;
                case (int)SmsResultError.RadioOff:
                    Toast.MakeText(Application.Context, "Radio Off", ToastLength.Short).Show();
                    break;
                default:
                    break;
            }
        }
    }
    //[BroadcastReceiver(Exported = true, Permission = "//receiver/@android:android.permission.SEND_SMS")]
    [BroadcastReceiver]
    public class SMSDeliveredReceiver : BroadcastReceiver
    {
        public override void OnReceive(Context context, Intent intent)
        {
            switch ((int)ResultCode)
            {
                case (int)Result.Ok:
                    Toast.MakeText(Application.Context, "SMS Delivered", ToastLength.Short).Show();
                    break;
                case (int)Result.Canceled:
                    Toast.MakeText(Application.Context, "SMS not delivered", ToastLength.Short).Show();
                    break;
            }
        }
    }
}

Answer 1

As you could not monitor Toast 's disappearance ,you could make private ProgressDialog progress; to static ,

then in your SMSSentReceiver and SMSDeliveredReceiver :(Let progressDialog disappear after getting the system response broadcast)

  [BroadcastReceiver]
public class SMSSentReceiver : BroadcastReceiver
{
    public override void OnReceive(Context context, Intent intent)
    {
        switch ((int)ResultCode)
        {
            case (int)Result.Ok:
                Toast.MakeText(Application.Context, "SMS has been sent", ToastLength.Short).Show();
                break;
            case (int)SmsResultError.GenericFailure:
                Toast.MakeText(Application.Context, "Generic Failure", ToastLength.Short).Show();
                break;
            case (int)SmsResultError.NoService:
                Toast.MakeText(Application.Context, "No Service", ToastLength.Short).Show();
                break;
            case (int)SmsResultError.NullPdu:
                Toast.MakeText(Application.Context, "Null PDU", ToastLength.Short).Show();
                break;
            case (int)SmsResultError.RadioOff:
                Toast.MakeText(Application.Context, "Radio Off", ToastLength.Short).Show();
                break;
            default:
                break;
        }
        if (progress.IsShowing)
            progress.Dismiss();
    }
}
//[BroadcastReceiver(Exported = true, Permission = "//receiver/@android:android.permission.SEND_SMS")]
[BroadcastReceiver]
public class SMSDeliveredReceiver : BroadcastReceiver
{
    public override void OnReceive(Context context, Intent intent)
    {
        switch ((int)ResultCode)
        {
            case (int)Result.Ok:
                Toast.MakeText(Application.Context, "SMS Delivered", ToastLength.Short).Show();
                break;
            case (int)Result.Canceled:
                Toast.MakeText(Application.Context, "SMS not delivered", ToastLength.Short).Show();
                break;
        }
        if (progress.IsShowing)
            progress.Dismiss();
    }
}