Adding a way to save youtube playlists.

MusicApp/MusicApp.csproj

@@ -272,6 +272,7 @@
     <Compile Include="Resources\Portable Class\YtFile.cs" />
     <Compile Include="Resources\Resource.Designer.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Resources\values\ButtonHolder.cs" />
     <Compile Include="Resources\values\ChannelHolder.cs" />
     <Compile Include="Resources\values\DownloadFile.cs" />
     <Compile Include="Resources\values\EmptyCategoryHolder.cs" />
@@ -556,6 +557,15 @@
   <ItemGroup>
     <AndroidResource Include="Resources\layout\EmptyYoutubeSearch.xml" />
   </ItemGroup>
+  <ItemGroup>
+    <AndroidResource Include="Resources\layout\BorderlessButton.xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <AndroidResource Include="Resources\layout\SaveAPlaylist.xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <AndroidResource Include="Resources\drawable\Edit.png" />
+  </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>

MusicApp/Resources/Portable Class/Home.cs

@@ -25,7 +25,7 @@ namespace MusicApp.Resources.Portable_Class
         public static List<HomeSection> adapterItems = new List<HomeSection>();
         public View view;
 
-        private string[] actions = new string[] { "Play", "Play Next", "Play Last", "Add To Playlist", "Edit Metadata" };
+        private readonly string[] actions = new string[] { "Play", "Play Next", "Play Last", "Add To Playlist", "Edit Metadata" };
 
         public override void OnActivityCreated(Bundle savedInstanceState)
         {

MusicApp/Resources/Portable Class/Playlist.cs

@@ -2,6 +2,7 @@
 using Android.Database;
 using Android.OS;
 using Android.Provider;
+using Android.Support.Design.Widget;
 using Android.Support.V4.App;
 using Android.Support.V7.App;
 using Android.Support.V7.Widget;
@@ -161,18 +162,53 @@ namespace MusicApp.Resources.Portable_Class
             {
                 Google.Apis.YouTube.v3.Data.Playlist playlist = response.Items[i];
                 YtPlaylists.Add(playlist);
-                Song song = new Song(playlist.Snippet.Title, playlist.Snippet.ChannelTitle, playlist.Snippet.Thumbnails.Default__.Url, playlist.Id, -1, -1, playlist.Id, true);
+                Song song = new Song(playlist.Snippet.Title, playlist.Snippet.ChannelTitle, playlist.Snippet.Thumbnails.Default__.Url, playlist.Id, -1, -1, playlist.Id, true, true);
                 ytPlaylists.Add(song);
             }
 
+            adapter.SetYtPlaylists(ytPlaylists, false);
 
+            //Saved playlists
+            ChannelSectionsResource.ListRequest forkedRequest = youtube.ChannelSections.List("snippet,contentDetails");
+            forkedRequest.Mine = true;
+            ChannelSectionListResponse forkedResponse = await forkedRequest.ExecuteAsync();
+            if (instance == null)
+                return;
 
+            bool forkedFound = false;
+            foreach (ChannelSection section in forkedResponse.Items)
+            {
+                if(section.Snippet.Title == "Saved Playlists")
+                {
+                    for (int i = 0; i < section.ContentDetails.Playlists.Count; i++)
+                    {
+                        PlaylistsResource.ListRequest plRequest = youtube.Playlists.List("snippet, contentDetails");
+                        plRequest.Id = section.ContentDetails.Playlists[i];
 
-            if(ytPlaylists.Count == 1)
+                        PlaylistListResponse plResponse = await plRequest.ExecuteAsync();
+
+                        if (instance == null)
+                            return;
+
+                        Google.Apis.YouTube.v3.Data.Playlist playlist = plResponse.Items[0];
+                        playlist.Kind = "youtube#saved";
+                        YtPlaylists.Add(playlist);
+                        Song song = new Song(playlist.Snippet.Title, playlist.Snippet.ChannelTitle, playlist.Snippet.Thumbnails.Default__.Url, playlist.Id, -1, -1, playlist.Id, true, false);
+                        ytPlaylists.Add(song);
+                        forkedFound = true;
+                    }
+                }
+            }
+
+            if (ytPlaylists.Count == 1)
             {
                 ytPlaylists.Add(new Song("EMPTY", "You don't have any youtube playlist on your account. \nWarning: Only playlist from your google account are displayed", null, null, -1, -1, null));
             }
-            adapter.SetYtPlaylists(ytPlaylists);
+
+            if (forkedFound)
+                adapter.SetYtPlaylists(ytPlaylists, true);
+            else
+                adapter.SetYtPlaylists(ytPlaylists, true);
         }
 
         public static Fragment NewInstance()
@@ -194,6 +230,63 @@ namespace MusicApp.Resources.Portable_Class
 
         private void ListView_ItemClick(object sender, int Position)
         {
+            if(Position == playList.Count + ytPlaylists.Count)
+            {
+                View view = LayoutInflater.Inflate(Resource.Layout.SaveAPlaylist, null);
+                AlertDialog dialog = new AlertDialog.Builder(Activity, MainActivity.dialogTheme)
+                    .SetTitle("Add a Playlist")
+                    .SetView(view)
+                    .SetNegativeButton("Cancel", (s, eventArgs) => { })
+                    .SetPositiveButton("Go", async (s, eventArgs) => 
+                    {
+                        string url = view.FindViewById<EditText>(Resource.Id.playlistURL).Text;
+                        string playlistID = url.Substring(url.IndexOf('=') + 1);
+
+                        ChannelSectionsResource.ListRequest forkedRequest = YoutubeEngine.youtubeService.ChannelSections.List("snippet,contentDetails");
+                        forkedRequest.Mine = true;
+                        ChannelSectionListResponse forkedResponse = await forkedRequest.ExecuteAsync();
+
+                        foreach (ChannelSection section in forkedResponse.Items)
+                        {
+                            if (section.Snippet.Title == "Saved Playlists")
+                            {
+                                //AddToSection
+                                if (section.ContentDetails.Playlists.Contains(playlistID))
+                                {
+                                    Snackbar.Make(Activity.FindViewById<View>(Resource.Id.snackBar), "You've already added this playlist.", 1).Show();
+                                    return;
+                                }
+                                else
+                                {
+                                    section.ContentDetails.Playlists.Add(playlistID);
+                                    ChannelSectionsResource.UpdateRequest request = YoutubeEngine.youtubeService.ChannelSections.Update(section, "snippet,contentDetails");
+                                    ChannelSection response = await request.ExecuteAsync();
+                                    Refresh();
+                                    return;
+                                }
+                            }
+                        }
+                        //CreateSection and add to it
+                        ChannelSection newSection = new ChannelSection();
+                        ChannelSectionContentDetails details = new ChannelSectionContentDetails();
+                        ChannelSectionSnippet snippet = new ChannelSectionSnippet();
+
+                        details.Playlists = new List<string>() { playlistID };
+                        snippet.Title = "Saved Playlists";
+                        snippet.Type = "multiplePlaylists";
+                        snippet.Style = "horizontalRow";
+
+                        newSection.ContentDetails = details;
+                        newSection.Snippet = snippet;
+
+                        ChannelSectionsResource.InsertRequest insert = YoutubeEngine.youtubeService.ChannelSections.Insert(newSection, "snippet,contentDetails");
+                        ChannelSection insertResponse = await insert.ExecuteAsync();
+                        Refresh();
+                    })
+                    .Show();
+                return;
+            }
+
             bool local = Position <= playList.Count;
             Song playlist = local ?
                 new Song(playList[Position], null, null, null, -1, playlistId[Position], null) :
@@ -249,7 +342,7 @@ namespace MusicApp.Resources.Portable_Class
                             break;
                     }
                 });
-            else
+            else if(playlist.isParsed)
                 builder.SetItems(new string[] { "Play in order", "Random play", "Rename", "Delete", "Download" }, (senderAlert, args) =>
                 {
                     switch (args.Which)
@@ -273,6 +366,27 @@ namespace MusicApp.Resources.Portable_Class
                             break;
                     }
                 });
+            else
+                builder.SetItems(new string[] { "Play in order", "Random play", "Remove", "Download" }, (senderAlert, args) =>
+                {
+                    switch (args.Which)
+                    {
+                        case 0:
+                            PlayInOrder(playlist.GetPath());
+                            break;
+                        case 1:
+                            YoutubeEngine.RandomPlay(playlist.GetPath());
+                            break;
+                        case 2:
+                            Unfork(Position, playlist.GetPath());
+                            break;
+                        case 3:
+                            YoutubeEngine.DownloadPlaylist(playlist.GetPath());
+                            break;
+                        default:
+                            break;
+                    }
+                });
             builder.Show();
         }
 
@@ -285,11 +399,11 @@ namespace MusicApp.Resources.Portable_Class
 
             if (musicCursor != null && musicCursor.MoveToFirst())
             {
-                int titleID = musicCursor.GetColumnIndex(MediaStore.Audio.Media.InterfaceConsts.Title);
-                int artistID = musicCursor.GetColumnIndex(MediaStore.Audio.Media.InterfaceConsts.Artist);
-                int albumID = musicCursor.GetColumnIndex(MediaStore.Audio.Media.InterfaceConsts.Album);
-                int thisID = musicCursor.GetColumnIndex(MediaStore.Audio.Media.InterfaceConsts.Id);
-                int pathID = musicCursor.GetColumnIndex(MediaStore.Audio.Media.InterfaceConsts.Data);
+                int titleID = musicCursor.GetColumnIndex(Media.InterfaceConsts.Title);
+                int artistID = musicCursor.GetColumnIndex(Media.InterfaceConsts.Artist);
+                int albumID = musicCursor.GetColumnIndex(Media.InterfaceConsts.Album);
+                int thisID = musicCursor.GetColumnIndex(Media.InterfaceConsts.Id);
+                int pathID = musicCursor.GetColumnIndex(Media.InterfaceConsts.Data);
                 do
                 {
                     string Artist = musicCursor.GetString(artistID);
@@ -449,16 +563,16 @@ namespace MusicApp.Resources.Portable_Class
         {
             Google.Apis.YouTube.v3.Data.Playlist playlist = new Google.Apis.YouTube.v3.Data.Playlist
             {
-                Snippet = YtPlaylists[position].Snippet
+                Snippet = YtPlaylists[position - playList.Count].Snippet
             };
             playlist.Snippet.Title = name;
             playlist.Id = playlistID;
 
-            YtPlaylists[position].Snippet.Title = name;
+            YtPlaylists[position - playList.Count].Snippet.Title = name;
             YoutubeEngine.youtubeService.Playlists.Update(playlist, "snippet").Execute();
 
-            ytPlaylists[position].SetName(name);
-            adapter.UpdateElement(position, ytPlaylists[position]);
+            ytPlaylists[position - playList.Count].SetName(name);
+            adapter.UpdateElement(position, ytPlaylists[position - playList.Count]);
         }
 
         void RemoveYoutubePlaylist(int position, string playlistID)
@@ -466,8 +580,32 @@ namespace MusicApp.Resources.Portable_Class
             PlaylistsResource.DeleteRequest deleteRequest = YoutubeEngine.youtubeService.Playlists.Delete(playlistID);
             deleteRequest.Execute();
 
-            ytPlaylists.RemoveAt(position);
-            YtPlaylists.RemoveAt(position);
+            adapter.Remove(position);
+            YtPlaylists.RemoveAt(position - playList.Count);
+
+            if (ytPlaylists.Count == 1)
+            {
+                ytPlaylists.Add(new Song("EMPTY", "You don't have any youtube playlist on your account. \nWarning: Only playlist from your google account are displayed", null, null, -1, -1, null));
+            }
+        }
+
+        async void Unfork(int position, string playlistID)
+        {
+            ChannelSectionsResource.ListRequest forkedRequest = YoutubeEngine.youtubeService.ChannelSections.List("snippet,contentDetails");
+            forkedRequest.Mine = true;
+            ChannelSectionListResponse forkedResponse = await forkedRequest.ExecuteAsync();
+
+            foreach (ChannelSection section in forkedResponse.Items)
+            {
+                if (section.Snippet.Title == "Saved Playlists")
+                {
+                    section.ContentDetails.Playlists.Remove(playlistID);
+                    ChannelSectionsResource.UpdateRequest request = YoutubeEngine.youtubeService.ChannelSections.Update(section, "snippet,contentDetails");
+                    ChannelSection response = await request.ExecuteAsync();
+                }
+            }
+
+            YtPlaylists.RemoveAt(position - playList.Count);
             adapter.Remove(position);
 
             if (ytPlaylists.Count == 1)

MusicApp/Resources/Portable Class/PlaylistAdapter.cs

@@ -1,5 +1,6 @@
 using Android.App;
 using Android.Graphics;
+using Android.Graphics.Drawables;
 using Android.Support.V7.Widget;
 using Android.Views;
 using Android.Widget;
@@ -15,6 +16,7 @@ namespace MusicApp.Resources.Portable_Class
         private List<string> playlistsName;
         private List<int> playlistCount;
         private List<Song> ytPlaylists;
+        private bool? forkSaved = false;
         public int listPadding;
         public event EventHandler<int> ItemClick;
         public event EventHandler<int> ItemLongCLick;
@@ -45,32 +47,30 @@ namespace MusicApp.Resources.Portable_Class
             {
                 playlistsName.RemoveAt(position);
                 playlistCount.RemoveAt(position);
-                //NotifyItemRangeInserted(position, 1);
 
                 if (playlistsName.Count == 1)
                 {
                     playlistsName.Add("EMPTY - You don't have any playlist on your device.");
                     playlistCount.Add(-1);
-                    //NotifyItemRangeInserted(2, 1);
                 }
             }
             else
             {
                 ytPlaylists.RemoveAt(position - playlistsName.Count);
-                //NotifyItemRangeInserted(position - playlistsName.Count, 1);
 
                 if (ytPlaylists.Count == 1)
                 {
                     ytPlaylists.Add(new Song("EMPTY", "You don't have any youtube playlist on your account. \nWarning: Only playlist from your google account are displayed", null, null, -1, -1, null));
-                    //NotifyItemRangeInserted(playlistsName.Count + 2, 1);
                 }
             }
             NotifyDataSetChanged();
         }
 
-        public void SetYtPlaylists(List<Song> ytPlaylists)
+        public void SetYtPlaylists(List<Song> ytPlaylists, bool forkSaved)
         {
-            if(this.ytPlaylists.Count > 0)
+            this.forkSaved = forkSaved;
+
+            if (this.ytPlaylists.Count > 0)
                 NotifyItemRangeRemoved(playlistsName.Count + 1, this.ytPlaylists.Count);
 
             this.ytPlaylists = ytPlaylists;
@@ -78,7 +78,7 @@ namespace MusicApp.Resources.Portable_Class
                 NotifyItemRangeInserted(playlistsName.Count + 1, ytPlaylists.Count);
         }
 
-        public override int ItemCount => playlistsName.Count + ytPlaylists.Count;
+        public override int ItemCount => playlistsName.Count + ytPlaylists.Count + (forkSaved == true ? 1 : 0);
 
         public override void OnBindViewHolder(RecyclerView.ViewHolder viewHolder, int position)
         {
@@ -97,6 +97,20 @@ namespace MusicApp.Resources.Portable_Class
                 EmptyCategoryHolder holder = (EmptyCategoryHolder)viewHolder;
                 holder.text.Text = playlistsName[1].Substring(8);
             }
+            else if (position == playlistsName.Count + ytPlaylists.Count)
+            {
+                ButtonHolder holder = (ButtonHolder)viewHolder;
+                if (MainActivity.Theme == 1)
+                {
+                    ((GradientDrawable)holder.ItemView.Background).SetStroke(5, Android.Content.Res.ColorStateList.ValueOf(Color.Argb(255, 62, 80, 180)));
+                    holder.Button.SetTextColor(Color.Argb(255, 62, 80, 180));
+                }
+                else
+                {
+                    ((GradientDrawable)holder.ItemView.Background).SetStroke(5, Android.Content.Res.ColorStateList.ValueOf(Color.Argb(255, 21, 183, 237)));
+                    holder.Button.SetTextColor(Color.Argb(255, 21, 183, 237));
+                }
+            }
             else if (playlistsName.Count >= position)
             {
                 TwoLineHolder holder = (TwoLineHolder) viewHolder;
@@ -137,7 +151,7 @@ namespace MusicApp.Resources.Portable_Class
                     holder.more.LayoutParameters = layoutParams;
                 }
             }
-            else if(position > playlistsName.Count)
+            else if (position > playlistsName.Count && ytPlaylists.Count >= position - playlistsName.Count)
             {
                 RecyclerHolder holder = (RecyclerHolder)viewHolder;
                 Song song = ytPlaylists[position - playlistsName.Count];
@@ -148,6 +162,15 @@ namespace MusicApp.Resources.Portable_Class
                 var songAlbumArtUri = Android.Net.Uri.Parse(song.GetAlbum());
                 Picasso.With(Application.Context).Load(songAlbumArtUri).Placeholder(Resource.Drawable.MusicIcon).Resize(400, 400).CenterCrop().Into(holder.AlbumArt);
 
+                if (song.isParsed)
+                {
+                    holder.edit.Visibility = ViewStates.Visible;
+                    if (MainActivity.Theme == 1)
+                        holder.edit.SetColorFilter(Color.White);
+                }
+                else
+                    holder.edit.Visibility = ViewStates.Gone;
+
                 holder.more.Tag = position;
                 if (!holder.more.HasOnClickListeners)
                 {
@@ -201,6 +224,11 @@ namespace MusicApp.Resources.Portable_Class
                 View itemView = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.SongList, parent, false);
                 return new RecyclerHolder(itemView, OnClick, OnLongClick);
             }
+            else if (viewType == 3)
+            {
+                View itemView = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.BorderlessButton, parent, false);
+                return new ButtonHolder(itemView, OnClick);
+            }
             else
             {
                 View itemView = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.EmptyListCategory, parent, false);
@@ -214,10 +242,12 @@ namespace MusicApp.Resources.Portable_Class
                 return 0;
             else if (playlistsName.Count >= position && (playlistsName.Count > 2 || !playlistsName[1].StartsWith("EMPTY - ")))
                 return 1;
-            else if(position > playlistsName.Count && (ytPlaylists.Count > 2 || ytPlaylists[1].GetName() != "EMPTY")) 
+            else if(position > playlistsName.Count && position < playlistsName.Count + ytPlaylists.Count && (ytPlaylists.Count > 2 || ytPlaylists[1].GetName() != "EMPTY")) 
                 return 2;
-            else
+            else if (position == playlistsName.Count + ytPlaylists.Count)
                 return 3;
+            else 
+                return 4;
         }
 
         void OnClick(int position)

MusicApp/Resources/Portable Class/RecyclerHolder.cs

@@ -13,6 +13,7 @@ namespace MusicApp.Resources.Portable_Class
         public TextView Title;
         public TextView Artist;
         public ImageView AlbumArt;
+        public ImageView edit;
         public ImageView youtubeIcon;
         public ImageView more;
 
@@ -23,6 +24,7 @@ namespace MusicApp.Resources.Portable_Class
             Title = itemView.FindViewById<TextView>(Resource.Id.title);
             Artist = itemView.FindViewById<TextView>(Resource.Id.artist);
             AlbumArt = itemView.FindViewById<ImageView>(Resource.Id.albumArt);
+            edit = itemView.FindViewById<ImageView>(Resource.Id.edit);
             youtubeIcon = itemView.FindViewById<ImageView>(Resource.Id.youtubeIcon);
             more = itemView.FindViewById<ImageView>(Resource.Id.moreButton);
 

MusicApp/Resources/Portable Class/TopicSelector.cs

@@ -25,6 +25,8 @@ namespace MusicApp.Resources.Portable_Class
         public async override void OnActivityCreated(Bundle savedInstanceState)
         {
             base.OnActivityCreated(savedInstanceState);
+            if(MainActivity.Theme == 0)
+                ListView.SetBackgroundColor(Android.Graphics.Color.White);
 
             await MainActivity.instance.WaitForYoutube();
 

MusicApp/Resources/layout/BorderlessButton.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<Button
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  android:layout_width="fill_parent"
+  android:layout_height="wrap_content"
+  android:layout_marginTop="10dp"
+  android:layout_marginLeft="20dp"
+  android:layout_marginRight="20dp"
+  android:background="@drawable/FlatButtonBorder"
+  android:id="@+id/button"
+  android:text="Add a playlist" />

MusicApp/Resources/layout/CreatePlaylistDialog.xml

@@ -1,16 +1,17 @@
 <?xml version="1.0" encoding="utf-8" ?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-              android:orientation="vertical"
-              android:layout_width="wrap_content" 
-              android:layout_height="wrap_content">
+<LinearLayout 
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  android:orientation="vertical"
+  android:layout_width="wrap_content" 
+  android:layout_height="wrap_content">
   <EditText
-      android:id="@+id/playlistName"
-      android:inputType="text"
-      android:layout_width="match_parent"
-      android:layout_height="wrap_content"
-      android:layout_marginTop="16dp"
-      android:layout_marginLeft="8dp"
-      android:layout_marginRight="8dp"
-      android:layout_marginBottom="4dp"
-      android:hint="Playlist Name" />
+    android:id="@+id/playlistName"
+    android:inputType="text"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginTop="16dp"
+    android:layout_marginLeft="8dp"
+    android:layout_marginRight="8dp"
+    android:layout_marginBottom="4dp"
+    android:hint="Playlist Name" />
 </LinearLayout>

MusicApp/Resources/layout/SaveAPlaylist.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<LinearLayout
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  android:orientation="vertical"
+  android:layout_width="wrap_content"
+  android:layout_height="wrap_content">
+  <TextView
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginTop="16dp"
+    android:layout_marginLeft="8dp"
+    android:layout_marginRight="8dp"
+    android:layout_marginBottom="4dp"
+    android:text="You can add any youtube playlist by entering the playlist url in this field. You can find a playlist url by clicking the share button on the youtube app then click Copy Link. \nWarning: it will add a section  &quot;Saved Playlists&quot; on your youtube channel."/>
+  <EditText
+    android:id="@+id/playlistURL"
+    android:inputType="text"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginTop="16dp"
+    android:layout_marginLeft="8dp"
+    android:layout_marginRight="8dp"
+    android:layout_marginBottom="4dp"
+    android:hint="Playlist URL" />
+</LinearLayout>

MusicApp/Resources/layout/SongList.xml

@@ -53,12 +53,20 @@
     android:layout_alignParentRight="true" >
     <ImageView
       android:id="@+id/youtubeIcon"
-      android:layout_width="50dp"
-      android:layout_height="50dp"
+      android:layout_width="30dp"
+      android:layout_height="30dp"
       android:padding="5dp"
       android:background="@null"
       android:src="@drawable/youtubeIcon"
       android:visibility="gone" />
+    <ImageView
+      android:id="@+id/edit"
+      android:layout_width="30dp"
+      android:layout_height="30dp"
+      android:padding="5dp"
+      android:background="@null"
+      android:src="@drawable/Edit"
+      android:visibility="gone" />
     <ImageView
       android:id="@+id/moreButton"
       android:layout_width="30dp"

MusicApp/Resources/values/ButtonHolder.cs

@@ -0,0 +1,22 @@
+using Android.Support.V7.Widget;
+using Android.Views;
+using Android.Widget;
+using System;
+
+namespace MusicApp.Resources.values
+{
+    public class ButtonHolder : RecyclerView.ViewHolder
+    {
+        public Button Button;
+
+        public ButtonHolder(View itemView, Action<int> listener) : base(itemView)
+        {
+            Button = itemView.FindViewById<Button>(Resource.Id.button);
+
+            if (listener != null)
+            {
+                itemView.Click += (sender, e) => listener(AdapterPosition);
+            }
+        }
+    }
+}