I am trying to customize the MvxSpinner to add some additional controls, here is my code:
public class ChamSpinner : LinearLayout
{
public Spinner Spinner{ get; private set; }
public EventHandler<AdapterView.ItemSelectedEventArgs> ItemSelected;
public ChamSpinner (Context context, IAttributeSet attrs) : this (context, attrs, new ChamSpinnerAdapter (context))
{
}
public ChamSpinner (Context context, IAttributeSet attrs, IMvxAdapter adapter) : base (context, attrs)
{
((Activity)Context).LayoutInflater.Inflate (Resource.Layout.ChamSpinnerLayout, this);
Spinner = FindViewById<Spinner> (Resource.Id.ChamSpinnerSpinner);
int itemTemplateId = MvxAttributeHelpers.ReadListItemTemplateId (context, attrs);
int dropDownItemTemplateId = MvxAttributeHelpers.ReadDropDownListItemTemplateId (context, attrs);
adapter.ItemTemplateId = itemTemplateId;
adapter.DropDownItemTemplateId = dropDownItemTemplateId;
Adapter = adapter;
SetupHandleItemSelected ();
}
public new IMvxAdapter Adapter
{
get { return Spinner.Adapter as IMvxAdapter; }
set
{
var existing = Adapter;
if (existing == value)
return;
if (existing != null && value != null)
{
value.ItemsSource = existing.ItemsSource;
value.ItemTemplateId = existing.ItemTemplateId;
}
Spinner.Adapter = value;
}
}
[MvxSetToNullAfterBinding]
public IEnumerable ItemsSource
{
get
{
return Adapter.ItemsSource;
}
set
{
Adapter.ItemsSource = value;
}
}
public int ItemTemplateId
{
get { return Adapter.ItemTemplateId; }
set { Adapter.ItemTemplateId = value; }
}
public int DropDownItemTemplateId
{
get { return Adapter.DropDownItemTemplateId; }
set { Adapter.DropDownItemTemplateId = value; }
}
public ICommand HandleItemSelected { get; set; }
private void SetupHandleItemSelected ()
{
Spinner.ItemSelected += (sender, args) =>
{
var position = args.Position;
HandleSelected (position);
if (ItemSelected != null)
ItemSelected (sender, args);
};
}
protected virtual void HandleSelected (int position)
{
var item = Adapter.GetRawItem (position);
if (this.HandleItemSelected == null
|| item == null
|| !this.HandleItemSelected.CanExecute (item))
return;
this.HandleItemSelected.Execute (item);
}
}
And I am using it like this:
<cross.android.ChamSpinner
android:layout_width="fill_parent"
android:layout_height="wrap_content"
local:MvxDropDownItemTemplate="#layout/myspinneritemdropdown"
local:MvxItemTemplate="#layout/myspinneritem"
local:MvxBind="ItemsSource MyItemsSource; SelectedItem MyItem; Mode TwoWay" />
The spinner is always empty, I tried to add a custom binding on ItemsSource property but the result stilll the same.
How can I do to show my items in my spinner?
Thank you in advance.
I think using BindingInflate instead of Inflate should fix it or even points you in the right direction. https://github.com/MvvmCross/MvvmCross/blob/v3.1/Cirrious/Cirrious.MvvmCross.Binding.Droid/BindingContext/IMvxAndroidBindingContext.cs
((IMvxBindingContextOwner)Context).BindingInflate(Resource.Layout.ChamSpinnerLayout, this);
I found this error in my log
MvxBind:Error: 32,12 View type not found - cross.android.ChamSpinner
My custom control is in another assembly so I added it to MvvmCross View assemblies is my Setup class like this
protected override IList<Assembly> AndroidViewAssemblies
{
get
{
var assemblies = base.AndroidViewAssemblies;
assemblies.Add(typeof(ChamSpinner).Assembly);
return assemblies;
}
}
Thank you Stuart for your advices and for your great Framework.
Related
I want to filter Listview by Searchview
I use the following Adapter for the filter and it works if I haven't made any new additions to the adapter
When I add a new item to Listview, the search stops completely until I restart the program after adding, modifying or deleting it
full code
adapter class
Do you want to achieve the result like following GIF?
If you want to add the item to the listview, based on your adapter, you should item in the adapter like following code.
public class TableItemAdapter : BaseAdapter<TableItem>, IFilterable
{
public List<TableItem> _originalData;
public List<TableItem> _items;
private readonly Activity _context;
public TableItemAdapter(Activity activity, IEnumerable<TableItem> tableitems)
{
_items = tableitems.ToList();
_context = activity;
Filter = new TableItemFilter(this);
}
//Add data to the `_items`, listview will be updated, if add data in the activity,
//there are two different lists, so listview will not update.
public void AddData(TableItem tableItem)
{
_items.Add(tableItem);
NotifyDataSetChanged();
}
public override TableItem this[int position]
{
get { return _items[position]; }
}
public Filter Filter { get; private set; }
public override int Count
{
get { return _items.Count; }
}
public override long GetItemId(int position)
{
return position;
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var item = _items[position];
View view = convertView;
if (view == null) // no view to re-use, create new
view = convertView ?? _context.LayoutInflater.Inflate(Resource.Layout.TableItem, null);
//view = _context.LayoutInflater.Inflate(Resource.Layout.TableItem, null);
view.FindViewById<TextView>(Resource.Id.Text1).Text = item.Heading;
view.FindViewById<TextView>(Resource.Id.Text2).Text = item.SubHeading;
return view;
}
public override void NotifyDataSetChanged()
{
// this.NotifyDataSetChanged();
base.NotifyDataSetChanged();
}
}
public class TableItemFilter :Filter
{
private readonly TableItemAdapter _adapter;
public TableItemFilter(TableItemAdapter adapter)
{
_adapter = adapter;
}
protected override FilterResults PerformFiltering(ICharSequence constraint)
{
var returnObj = new FilterResults();
var results = new List<TableItem>();
if (_adapter._originalData == null)
_adapter._originalData = _adapter._items;
if (constraint == null) return returnObj;
if (_adapter._originalData != null && _adapter._originalData.Any())
{
results.AddRange(
_adapter._originalData.Where(
item => item.SubHeading.ToLower().Contains(constraint.ToString()) | item.Heading.ToLower().Contains(constraint.ToString())));
}
returnObj.Values = FromArray(results.Select(r => r.ToJavaObject()).ToArray());
returnObj.Count = results.Count;
constraint.Dispose();
return returnObj;
}
protected override void PublishResults(ICharSequence constraint, FilterResults results)
{
using (var values = results.Values)
_adapter._items = values.ToArray<Java.Lang.Object>().Select(r => r.ToNetObject<TableItem>()).ToList();
_adapter.NotifyDataSetChanged();
// Don't do this and see GREF counts rising
constraint.Dispose();
results.Dispose();
}
}
public class JavaHolder : Java.Lang.Object
{
public readonly object Instance;
public JavaHolder(object instance)
{
Instance = instance;
}
}
public static class ObjectExtensions
{
public static TObject ToNetObject<TObject>(this Java.Lang.Object value)
{
if (value == null)
return default(TObject);
if (!(value is JavaHolder))
throw new InvalidOperationException("Unable to convert to .NET object. Only Java.Lang.Object created with .ToJavaObject() can be converted.");
TObject returnVal;
try { returnVal = (TObject)((JavaHolder)value).Instance; }
finally { value.Dispose(); }
return returnVal;
}
public static Java.Lang.Object ToJavaObject<TObject>(this TObject value)
{
if (Equals(value, default(TObject)) && !typeof(TObject).IsValueType)
return null;
var holder = new JavaHolder(value);
return holder;
}
}
}
Then in the activity, you add the data by adapter.
private void Button1_Click(object sender, System.EventArgs e)
{
tableItemAdapter.AddData(new TableItem() { Heading = "test1222", SubHeading = "sub Test" });
}
Here is my demo, you can download it.
https://github.com/851265601/Xamarin.Android_ListviewSelect/blob/master/XAListViewSearchDemo.zip
I wanne add new data to my listviewAdapter, i tried it with clearing all the data before it and notifying that there is now data but it doesn't seem to work. I followed the Solution (stackoverflow) but it doesn't work.
Does anyone have an idea why?
public class ReportsListViewAdapter : BaseAdapter<IMobileReport>, IFilterable
{
internal List<IMobileReport> originalData;
internal List<IMobileReport> reports;
private Context context;
public override IMobileReport this[int position] => reports[position];
public ReportsListViewAdapter(Context context, IEnumerable<IMobileReport> reports)
{
this.reports = reports.OrderBy(report => report.StudyDate).ToList();
this.context = context;
Filter = new ReportsFilter(this);
}
public override int Count => this.reports.Count;
public Filter Filter { get; private set; }
public override long GetItemId(int position)
{
return position;
}
public void updateReportsList(List<MobileReport> newlist)
{
reports.AddRange(newlist);
this.NotifyDataSetChanged();
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
View row = convertView;
if(row == null)
{
row = LayoutInflater.From(context).Inflate(Resource.Layout.listView_reports_row, null, false);
}
var txtName = row.FindViewById<TextView>(Resource.Id.txtName);
txtName.Text = reports[position].Student.Name;
var txtFirstName = row.FindViewById<TextView>(Resource.Id.txtFirstName);
txtFirstName.Text = reports[position].Student.FirstName;
var txtSource = row.FindViewById<TextView>(Resource.Id.txtSource);
txtSource.Text = reports[position].Source;
var txtCritical = row.FindViewById<TextView>(Resource.Id.txtCritical);
txtSource.Text = reports[position].Critical.ToString();
return row;
}
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
reports = new List<IMobileReport>();
//Init();
_reportsHubConnector = new ReportsHubConnector();
#pragma warning disable 4014 // We cannot await this task here because the signature of the inherited method is void
Task.Factory.StartNew(async () =>
{
await _reportsHubConnector.StartConnection();
await _reportsHubConnector.SendT();
}, TaskCreationOptions.PreferFairness);
#pragma warning restore 4014
Console.WriteLine("HomeActivity: OnCreate");
SetContentView(Resource.Layout.activity_reports);
SupportActionBar.SetDisplayShowTitleEnabled(false);
SupportActionBar.SetDisplayHomeAsUpEnabled(false);
SupportActionBar.SetDisplayShowHomeEnabled(true);
WireUpElements();
listView = FindViewById<ListView>(Resource.Id.reports);
ReportsListViewAdapter adapter = new ReportsListViewAdapter(this, reports);
listView.Adapter = adapter;
searchView = FindViewById<SearchView>(Resource.Id.searchView1);
searchView.QueryTextChange += this.Filter;
listView.ItemClick += ItemClicked;
criticalButton = FindViewById<LinearLayout>(Resource.Id.AuthenticatorButton);
criticalButton.Click += criticalClicked;
_reportsHubConnector.ReportsRecieved += (reports) =>
{
adapter.updateReportsList(reports);
};
}
When i debug slowly the GetView does get triggered, maybe this is a clue to why its not being called when i don't debug or go over the code quick.
This.RunOnUiThread is never called but update is.
_reportsHubConnector.ReportsRecieved += (tmpReports) =>
{
adapter.updateReportsList(tmpReports);
this.RunOnUiThread(() =>
{
criticalButton.SetBackgroundColor(Android.Graphics.Color.Red);
});
};
i tried it with clearing all the data before it and notifying that there is now data but it doesn't seem to work.
From shared code , not seeing clear method , you can add reports.Clear() to check whether it works .
public void updateReportsList(List<MobileReport> newlist)
{
reports.Clear();
reports.AddRange(newlist);
this.NotifyDataSetChanged();
}
If not works , need to check whehter added newlist is the correct data format.
========================Update========================
In OnCreate method , where _reportsHubConnector.ReportsRecieved call update method modify as follow :
_reportsHubConnector.ReportsRecieved += (tmpReports) =>
{
adapter.updateReportsList(tmpReports);
};
Change reports argument to tmpReports to avoid mixing with the original data reports .
Therefore , there is another common way to update data of adapter as follow :
_reportsHubConnector.ReportsRecieved += (reports) =>
{
List<IMobileReport> tmp = new List<IMobileReport>();
tmp = reports ; // use a tmp list data for updating , not using original list data
adapter.updateReportsList(tmp);
};
============================Update===============================
From my sample project , I find a interesting phenomenon and that maybe the problem.
Here I will share my custom adapter HomeScreenAdapter :
public class HomeScreenAdapter : BaseAdapter<TableItem> {
List<TableItem> items;
Activity context;
public HomeScreenAdapter(Activity context, List<TableItem> items)
: base()
{
this.context = context;
this.items = new List<TableItem>();
this.items.AddRange(items);
//this.items = items;
}
public override long GetItemId(int position)
{
return position;
}
public override TableItem this[int position]
{
get { return items[position]; }
}
public override int Count
{
get { return items.Count; }
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var item = items[position];
View view = convertView;
if (view == null) // no view to re-use, create new
view = context.LayoutInflater.Inflate(Resource.Layout.CustomView, null);
view.FindViewById<TextView>(Resource.Id.Text1).Text = item.Heading;
view.FindViewById<TextView>(Resource.Id.Text2).Text = item.SubHeading+" items";
view.FindViewById<ImageView>(Resource.Id.Image).SetImageResource(item.ImageResourceId);
return view;
}
public void UpdateListView(List<TableItem> newTableItem)
{
items.Clear();
items.AddRange(newTableItem);
NotifyDataSetChanged();
}
}
You will see in the Constructor of HomeScreenAdapter , I commented this line of code this.items = items; . The reault that it will work:
However , if I use this.items = items; to replace this.items.AddRange(items);, it will update nothing even can not show anything in ListView .
public HomeScreenAdapter(Activity context, List<TableItem> items)
: base()
{
this.context = context;
this.items = new List<TableItem>();
//this.items.AddRange(items);
this.items = items;
}
The effect :
The possible reason :
If the equal sign is used here, the pointer address of the items will change. When the data is updated, it cannot point to the original data source, so the update cannot be successful.
Therefore , here Constructor of your code can modify as follow to check whehter it works ：
public ReportsListViewAdapter(Context context, IEnumerable<IMobileReport> reports)
{
//this.reports = reports.OrderBy(report => report.StudyDate).ToList();
this.reports = new List<IMobileReport>();
this.reports.AddRange(reports.OrderBy(report => report.StudyDate).ToList());
this.context = context;
Filter = new ReportsFilter(this);
}
Related : Here is the sample project link .
I made an array to transfer the required data consisting of 3 elements(Heading,SubHeading, int ImageResourceId).
The data shows up well in listview but I couldn't do the research inside listview.
I want to do the research using searchview on specific SubHeading or both (Heading,SubHeading)
//on creat
listView.Adapter = new HomeScreenAdapter(this, HomeScreenAdapter.tableItems);
search.QueryTextChange += SearchV_QueryTextChange;
//filter listview
private void SearchV_QueryTextChange(object sender, SearchView.QueryTextChangeEventArgs e)
{
}
//
// 3-class listview item id
public class TableItem
{
public string Heading;
public string SubHeading;
public int ImageResourceId;
public TableItem(string Heading, string SubHeading, int ImageResourceId)
{
this.Heading = Heading;
this.SubHeading = SubHeading;
this.ImageResourceId = ImageResourceId;
}
}
}
//
//class adapter & array item
class HomeScreenAdapter : BaseAdapter<TableItem>
{
public static List<TableItem> tableItems = new List<TableItem>();
List<TableItem> items;
Activity context;
public void filldata()
{
tableItems.Add(new TableItem("hussein", "devepoer", Resource.Drawable.imaga));
tableItems.Add(new TableItem("ahmed", "admin", Resource.Drawable.imagb));
tableItems.Add(new TableItem("jasim", " manager", Resource.Drawable.imagc));
tableItems.Add(new TableItem("ahmed", "admin", Resource.Drawable.imagd));
tableItems.Add(new TableItem("jasim", " manager", Resource.Drawable.image));
tableItems.Add(new TableItem("jasim", " manager", Resource.Drawable.imagf));
}
}
According to your code, I do one sample by SubHeading to filter ListView data.
Firstly, create TableItem class:
public class TableItem
{
public string Heading { get; set; }
public string SubHeading { get; set; }
public int ImageResourceId { get; set; }
}
Then creating UI for ListView item:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<TextView android:id="#+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<ImageView android:id="#+id/imageView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
And create Adapter and filter for data:
public class TableItemAdapter : BaseAdapter<TableItem>, IFilterable
{
private List<TableItem> _originalData;
private List<TableItem> _items;
private readonly Activity _context;
public TableItemAdapter(Activity activity, IEnumerable<TableItem> tableitems)
{
_items = tableitems.OrderBy(s => s.SubHeading).ToList();
_context = activity;
Filter = new TableItemFilter(this);
}
public override TableItem this[int position]
{
get { return _items[position]; }
}
public Filter Filter { get; private set; }
public override int Count
{
get { return _items.Count; }
}
public override long GetItemId(int position)
{
return position;
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var view = convertView ?? _context.LayoutInflater.Inflate(Resource.Layout.TableItem, null);
var tableitem = _items[position];
var HeadingView = view.FindViewById<TextView>(Resource.Id.textView1);
var SubHeadingView = view.FindViewById<TextView>(Resource.Id.textView2);
var imageView = view.FindViewById<ImageView>(Resource.Id.imageView1);
HeadingView.Text = tableitem.Heading;
SubHeadingView.Text = tableitem.SubHeading;
imageView.SetImageResource(tableitem.ImageResourceId);
return view;
}
public override void NotifyDataSetChanged()
{
// If you are using cool stuff like sections
// remember to update the indices here!
base.NotifyDataSetChanged();
}
private class TableItemFilter : Filter
{
private readonly TableItemAdapter _adapter;
public TableItemFilter(TableItemAdapter adapter)
{
_adapter = adapter;
}
protected override FilterResults PerformFiltering(ICharSequence constraint)
{
var returnObj = new FilterResults();
var results = new List<TableItem>();
if (_adapter._originalData == null)
_adapter._originalData = _adapter._items;
if (constraint == null) return returnObj;
if (_adapter._originalData != null && _adapter._originalData.Any())
{
// Compare constraint to all names lowercased.
// It they are contained they are added to results.
results.AddRange(
_adapter._originalData.Where(
item => item.SubHeading.ToLower().Contains(constraint.ToString())));
}
// Nasty piece of .NET to Java wrapping, be careful with this!
returnObj.Values = FromArray(results.Select(r => r.ToJavaObject()).ToArray());
returnObj.Count = results.Count;
constraint.Dispose();
return returnObj;
}
protected override void PublishResults(ICharSequence constraint, FilterResults results)
{
using (var values = results.Values)
_adapter._items = values.ToArray<Java.Lang.Object>().Select(r =>r.ToNetObject<TableItem>()).ToList();
_adapter.NotifyDataSetChanged();
// Don't do this and see GREF counts rising
constraint.Dispose();
results.Dispose();
}
}
}
ObjectExtensions to implement filter:
public class JavaHolder : Java.Lang.Object
{
public readonly object Instance;
public JavaHolder(object instance)
{
Instance = instance;
}
}
public static class ObjectExtensions
{
public static TObject ToNetObject<TObject>(this Java.Lang.Object value)
{
if (value == null)
return default(TObject);
if (!(value is JavaHolder))
throw new InvalidOperationException("Unable to convert to .NET object. Only Java.Lang.Object created with .ToJavaObject() can be converted.");
TObject returnVal;
try { returnVal = (TObject)((JavaHolder)value).Instance; }
finally { value.Dispose(); }
return returnVal;
}
public static Java.Lang.Object ToJavaObject<TObject>(this TObject value)
{
if (Equals(value, default(TObject)) && !typeof(TObject).IsValueType)
return null;
var holder = new JavaHolder(value);
return holder;
}
}
Mainactivity.cs:
public class MainActivity : AppCompatActivity
{
private SearchView searchview1;
private ListView listview1;
private TableItemAdapter tableitemadapter;
private List<TableItem> tableitems;
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Xamarin.Essentials.Platform.Init(this, savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.activity_main);
searchview1 = FindViewById<SearchView>(Resource.Id.searchView1);
listview1 = FindViewById<ListView>(Resource.Id.listView1);
tableitems = new List<TableItem>()
{
new TableItem(){Heading= "hussein", SubHeading="devepoer",ImageResourceId= Resource.Drawable.plu3 },
new TableItem(){Heading= "ahmed", SubHeading="admin",ImageResourceId= Resource.Drawable.plu3 },
new TableItem(){Heading= "jasim", SubHeading="manager",ImageResourceId= Resource.Drawable.plu3 },
new TableItem(){Heading= "cherry", SubHeading="admin",ImageResourceId= Resource.Drawable.plu3 },
new TableItem(){Heading= "barry", SubHeading="manager",ImageResourceId= Resource.Drawable.plu3 },
new TableItem(){Heading= "annine", SubHeading="manager",ImageResourceId= Resource.Drawable.plu3 }
};
tableitemadapter = new TableItemAdapter(this,tableitems);
listview1.Adapter = tableitemadapter;
searchview1.QueryTextChange += Searchview1_QueryTextChange;
}
private void Searchview1_QueryTextChange(object sender, SearchView.QueryTextChangeEventArgs e)
{
tableitemadapter.Filter.InvokeFilter(e.NewText);
}
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);
}
}
The sample in github:
https://github.com/CherryBu/Searchviewsample
The screenshot:
I am using MvvmCross in my Xamarin.Android application. I want to make my own custom MvxRecyclerAdapter so that I can have multiple buttons in each row of the MvxRecyclerView. Here is my custom MvxRecyclerView:
public class TwoPieceMvxRecyclerView : MvxRecyclerView
{
private bool _initialized;
public TwoPieceMvxRecyclerView(Context context, IAttributeSet attr) : base(context, attr)
{
}
public override Android.Support.V7.Widget.RecyclerView.Adapter GetAdapter()
{
if(!_initialized)
{
SetAdapter(new TwoPieceMvxRecyclerAdapter());
_initialized = true;
}
return base.GetAdapter();
}
}
And here is my custom MvxRecyclerAdapter:
public class TwoPieceMvxRecyclerAdapter : MvxRecyclerAdapter, IOnClickListener
{
private ICommand _itemClickPiece1;
private ICommand _itemClickPiece2;
private View _clickablePiece1;
private View _clickablePiece2;
public TwoPieceMvxRecyclerAdapter()
{
}
public ICommand ItemClickPiece1
{
get { return _itemClickPiece1; }
set
{
if (ReferenceEquals(_itemClickPiece1, value))
{
return;
}
_itemClickPiece1 = value;
}
}
public ICommand ItemClickPiece2
{
get { return _itemClickPiece2; }
set
{
if (ReferenceEquals(_itemClickPiece2, value))
{
return;
}
_itemClickPiece2 = value;
}
}
protected override Android.Views.View InflateViewForHolder(Android.Views.ViewGroup parent, int viewType, MvvmCross.Binding.Droid.BindingContext.IMvxAndroidBindingContext bindingContext)
{
var view = base.InflateViewForHolder(parent, viewType, bindingContext);
_clickablePiece1 = view.FindViewById<View>(Resource.Id.clickable_piece1);
_clickablePiece2 = view.FindViewById<View>(Resource.Id.clickable_piece2);
_clickablePiece1.SetOnClickListener(this);
_clickablePiece2.SetOnClickListener(this);
return view;
}
public void OnClick(View v)
{
if (v == _clickablePiece1)
{
ItemClickPiece1.Execute(null);
}
else if (v == _clickablePiece2)
{
ItemClickPiece2.Execute(null);
}
}
}
When I run the application I get this error:
Could not activate JNI Handle 0xbfd00978 (key_handle 0x6e44919) of
Java type
'md5bd77c484e80df14e69d8c5ab04394fe0/TwoPieceMvxRecyclerView' as
managed type
'AzzimovMobile.Droid.Components.TwoPieceMvxRecycler.TwoPieceMvxRecyclerView'.
System.InvalidOperationException: If you wan't to use single
item-template RecyclerView Adapter you can't change
it'sIMvxTemplateSelector to anything other than
MvxDefaultTemplateSelector
You are missing a constructor on your RecyclerView:
public TwoPieceMvxRecyclerView(IntPtr javaReference, JniHandleOwnership transfer): base(javaReference, transfer)
{
}
Also be aware you don't need to use a custom RecyclerView to change its Adapter. You can just grab the RecyclerView instance on your .cs view and set the adapter from there. Something like this should work:
public class MyView: MvxFragment<MyViewModel>
{
//...
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
var view = base.OnCreateView(inflater, container, savedInstanceState);
// ...
var recycler = view.FindViewById<MvxRecyclerView>(Resource.Id.recycler);
recycler.Adapter = new TwoPieceMvxRecyclerAdapter(((IMvxAndroidBindingContext)BindingContext);
// you can even set a TemplateSelector here!
recycler.ItemTemplateSelector = new MyTemplateSelector();
// ...
return view;
}
}
I am try to filter listview with searchview using Base Adapter in in xamarin Android, My listView Bind in sql server using restfull web service i am stuck in PublishResults which is given an error
Here Is My Code:-
GetHospNames.cs
public class GetHospNames
{
public string HospID { get; set; }
public string HospName { get; set; }
public GetHospNames(string HospID, string HospName)
{
this.HospID = HospID;
this.HospName = HospName;
//this.HospLogo = HospLogo;
}
}
ContListViewHospNameClass.cs
using System.Collections.Generic;
using Android.App;
using Android.Views;
using Android.Widget;
using System;
using Android.Graphics;
using Android.Graphics.Drawables;
using System.IO;
using Android.Content;
using Java.Lang;
using Android.Text;
using Java.Util;
using Oject = Java.Lang.Object;
namespace HSAPP
{
public class ContListViewHospNameClass : BaseAdapter<GetHospNames>, IFilterable
{
public List<GetHospNames> objList;
Activity objActivity;
List<GetHospNames> filterList;
public ContListViewHospNameClass(Activity objMyAct, List<GetHospNames> objMyList) : base()
{
this.objActivity = objMyAct;
objList = objMyList;
this.filterList = objList;
Filter = new CustomFilter(this);
}
public override GetHospNames this[int position]
{
get
{
return objList[position];
}
}
public override int Count
{
get
{
return objList.Count;
}
}
public Filter Filter { get; set; }
public override void NotifyDataSetChanged()
{
base.NotifyDataSetChanged();
}
//This is Inner Class
public class CustomFilter : Filter
{
ContListViewHospNameClass CustomAdapter;
public CustomFilter(ContListViewHospNameClass adapter) : base()
{
this.CustomAdapter = adapter;
}
protected override FilterResults PerformFiltering(ICharSequence constraint)
{
FilterResults result = new FilterResults();
if (constraint != null && constraint.Length() > 0)
{
//Contraint To Upper
List<GetHospNames> filter = new List<GetHospNames>();
foreach (GetHospNames name in CustomAdapter.objList)
{
if (name.HospName.ToUpper().Contains(constraint.ToString().ToUpper()))
{
filter.Add(name);
}
}
Oject[] Name;
Name = new Oject[filter.Count];
for (int i = 0; i < filter.Count; i++)
{
Name[i] = filter[i].HospName.ToString();
}
result.Count = filter.Count;
result.Values = Name;
}
return result;
}
protected override void PublishResults(ICharSequence constraint, Filter.FilterResults result)
{
List<GetHospNames> filteredList = new List<GetHospNames>();
for (int i = 0; i < ((Oject[])result.Values).Length; i++)
{
filteredList.Add((Oject[])result.Values[i]);//Here Is An Error *****Cannot apply indexing with [] to an expression of type 'Object'****
}
CustomAdapter.objList = filteredList;
CustomAdapter.NotifyDataSetChanged();
}
}
public override long GetItemId(int position)
{
return position;
}
public Bitmap getBitmap(byte[] getByte)
{
if (getByte.Length != 0)
{
return BitmapFactory.DecodeByteArray(getByte, 0, getByte.Length);
}
else
{
return null;
}
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var item = objList[position];
if (convertView == null)
{
convertView = objActivity.LayoutInflater.Inflate(Resource.Layout.ContListViewHospName, null);
}
convertView.FindViewById<TextView>(Resource.Id.tvHospID).Text = item.HospID;
convertView.FindViewById<TextView>(Resource.Id.tvHospName).Text = item.HospName;
return convertView;
}
}
public static class ObjectTypeHelper
{
public static T Cast<T>(this Java.Lang.Object obj) where T : class
{
var propertyInfo = obj.GetType().GetProperty("Instance");
return propertyInfo == null ? null : propertyInfo.GetValue(obj, null) as T;
}
}
}
This is my MainActivity Code
private void BindControl_BindHospCompleted(object sender, BindControl.BindHospCompletedEventArgs e)
{
jsonValue = e.Result.ToString();
try
{
if (jsonValue == null)
{
Toast.MakeText(this, "No Data For Bind", ToastLength.Long).Show();
return;
}
JArrayValue = JArray.Parse(jsonValue);
list = new List<GetHospNames>();
int count = 0;
while (count < JArrayValue.Count)
{
GetHospNames getHospName = new GetHospNames(JArrayValue[count]["HospID"].ToString(), JArrayValue[count]["HospName"].ToString());
list.Add(getHospName);
count++;
}
if (count == 0)
{
Toast.MakeText(this, "No List Of Hospitals", ToastLength.Long).Show();
}
adapter = new ContListViewHospNameClass(this, list);
listView.Adapter = adapter;
search.QueryTextChange += (s, e) =>
{
adapter.Filter.InvokeFilter(e.NewText);
};
listView.ItemClick += ListView_ItemClick;
pBar.Dismiss();
}
catch (Java.Lang.Exception ex)
{
pBar.Dismiss();
//Toast.MakeText(this, ex.ToString(), ToastLength.Long).Show();
Finish();
Intent intent = new Intent(this, typeof(ChkIntConnActivity));
StartActivity(intent);
}
}
Please Help...Thank You