“Your content must have a ListView whose id attribute is android.R.id.list” on Xamarin for Visual Studio

Question

I'm developing a small Xamarin App.I am having trouble with this error on Xamarin for VS. I've tried to recreate this in a different project. I have already tried this solution Your content must have a ListView whose id attribute is 'android.R.id.list', its all over the Internet - and I'm starting to think its only applicable to Android Java Applications. When I change the id to android:id="@android:id/list i get the following error: Severity Code Description Project File Line Suppression State Error CS0117 'Resource.Id' does not contain a definition for 'list'

Android documentation wasn't very helpful either - https://developer.android.com/reference/android/app/ListActivity.html. I'm fairly new to Android and Xamarin Dev.

Here's my AXML:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/myDrawer"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <TextView
            android:id="@+id/txText"
            android:text="Hey slide from left of right"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center" />
    </FrameLayout>
    <ListView
        android:id="@+id/leftListView"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="left"
        android:choiceMode="singleChoice"
        android:divider="#D2D2D2"
        android:dividerHeight="24dp"
        android:background="#F2F2F2" />
</android.support.v4.widget.DrawerLayout>

Here's my cs file:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.Support.V4.Widget;
public class WelcomeActivity : ListActivity
    {
        DrawerLayout mDrawerLayout;
        List<string> menuItemsLeft = new List<string>();
        ArrayAdapter mLeftAdapter;
        ListView mLeftDrawer;
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Create your application here
            SetContentView(Resource.Layout.Generics);

            mDrawerLayout = FindViewById<DrawerLayout>(Resource.Id.myDrawer);
            mLeftDrawer = FindViewById<ListView>(Resource.Id.list);
}

Thank you in advance

yes .You are using `android:id="@+id/leftListView"` for your listview — IntelliJ Amiya, Sep 07 '16 at 06:13
if it was `ListActivity` then you can use `android:id="@android:id/list"` — IntelliJ Amiya, Sep 07 '16 at 06:14

score 0 · Answer 1 · answered Sep 07 '16 at 05:30

0

change your listview id

    <ListView
    android:id="@+id/leftListView"
    android:layout_width="240dp"
    android:layout_height="match_parent"
    android:layout_gravity="left"
    android:choiceMode="singleChoice"
    android:divider="#D2D2D2"
    android:dividerHeight="24dp"
    android:background="#F2F2F2" />

To

<ListView
    android:id="@android:id/list"
    android:layout_width="240dp"
    android:layout_height="match_parent"
    android:layout_gravity="left"
    android:choiceMode="singleChoice"
    android:divider="#D2D2D2"
    android:dividerHeight="24dp"
    android:background="#F2F2F2" />

answered Sep 07 '16 at 05:30

Vishal Senjaliya

454
6
21

what should i change it to @vishal senjaliya...? – T. Tshidiso Phaladi Sep 07 '16 at 06:14
use your listview id @android:id/list – Vishal Senjaliya Sep 07 '16 at 07:23
if you are using @android:id/list no need to create this mLeftDrawer = FindViewById(Resource.Id.list); and I suggest you have to declare you arrayadapter. – Vishal Senjaliya Sep 07 '16 at 07:46

score 0 · Answer 2 · answered Sep 07 '16 at 06:22

If you are using default adapter for your ListView , then you have to define the id for the listView to android:id="@android:id/list", so, change your listview to this:

<ListView
android:id="@android:id/list" //id changed
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:choiceMode="singleChoice"
android:divider="#D2D2D2"
android:dividerHeight="24dp"
android:background="#F2F2F2" />

“Your content must have a ListView whose id attribute is android.R.id.list” on Xamarin for Visual Studio

2 Answers2