HomeFragment.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using Newtonsoft.Json.Linq;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Newtonsoft.Json;
using Android.Text;

namespace PariwisataApp
{
    public class HomeFragment : Android.Support.V4.App.Fragment
    {
        ListView DaftarKabupaten;
        ProgressBar progress;
        private List<Kabupaten> itemKabupaten;

        CustomListAdapter adapters;
        //Ambil alamat load data API JSON
        private Uri BaseUri = new Uri("https://banyu.center/pariwisataapp/api/getKabupaten");


        public override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);

        }

        public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
        {
            //Menampilkan layout untuk fragment
            View view = inflater.Inflate(Resource.Layout.homeLayout, container, false);
            DaftarKabupaten = view.FindViewById<ListView>(Resource.Id.dataList);

            itemKabupaten = new List<Kabupaten>();
            var webClient = new WebClient();
            webClient.DownloadStringAsync(BaseUri);
            progress = view.FindViewById<ProgressBar>(Resource.Id.progressBar);
            progress.Visibility = ViewStates.Visible;
            webClient.DownloadStringCompleted += WebClient_DownloadStringCompleted;


            return view;
        }

        //Ambil data JSON dengan download String
        private void WebClient_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            Activity.RunOnUiThread(() =>
            {
                itemKabupaten = JsonConvert.DeserializeObject<List<Kabupaten>>(e.Result);
                //CustomListAdapter customListAdapter = new CustomListAdapter(this.Activity, itemKabupaten);
                adapters = new CustomListAdapter(this.Activity, itemKabupaten);
                DaftarKabupaten.Adapter = adapters;
                progress.Visibility = ViewStates.Gone;

                DaftarKabupaten.ItemClick += DaftarKabupaten_ItemClick; ;

            });
        }


        void DaftarKabupaten_ItemClick(object sender, AdapterView.ItemClickEventArgs e)
        {
            Kabupaten select = itemKabupaten.ElementAt(e.Position);
            Toast.MakeText(this.Activity, select.id.ToString(), ToastLength.Short).Show();
            string str = select.id.ToString();

            //Arahkan ke Fragment WisataFragment
            var transaction = this.FragmentManager.BeginTransaction();
            Bundle bundle = new Bundle();
            //Kirimkan argument untuk id
            bundle.PutString("sid", str);

            WisataFragment wisataList = new WisataFragment();
            wisataList.Arguments = bundle;
            transaction.Replace(Resource.Id.HomeFrameLayout, wisataList);
            transaction.AddToBackStack(null);
            transaction.Commit();

        }
    }
}