无法获得listView.ItemClick在MonoDroid的被称为被称为、listView、ItemClick、MonoDroid

2023-09-06 11:13:53 作者:蓝色◎妖姬

我有以下的code:

protected override void OnCreate (Bundle bundle)
{
    progress = ProgressDialog.Show(this, "", "Loading...");
    progress.SetProgressStyle(ProgressDialogStyle.Spinner);

    base.OnCreate (bundle);

    //Set the Activity's view to our list layout        
    SetContentView(Resource.Layout.LawsAndRegsList);

    new Thread(new ThreadStart(() => {
        //Create our adapter
        listAdapter = new LawsAndRegsListAdapter(this);
        this.RunOnUiThread ( () => {
            //Find the listview reference
            listView = FindViewById<ListView>(Resource.Id.listView);

            //Hook up our adapter to our ListView
            listView.Adapter = listAdapter;

            //Wire up the click event
            //listView.ItemClick += new EventHandler<ListView.ItemClickEventArgs>(listView_ItemClick);
            listView.ItemClick += listView_ItemClick;

            listAdapter.NotifyDataSetChanged(); 

            progress.Dismiss();
        });
    })).Start();
}

void listView_ItemClick(object sender, AdapterView.ItemClickEventArgs e)
{
    //Get our item from the list adapter
    var item = this.listAdapter.GetItemAtPosition(e.Position);

    //Make a toast with the item name just to show it was clicked
    Toast.MakeText(this, item.Name + " Clicked!", ToastLength.Short).Show();
}

谁能告诉我,为什么项目单击不会被调用?

Can anyone tell me why the ItemClick would not get called?

它看起来像什么,我已阅读并例子我已经看了我在做什么错了?感谢您的帮助。

It looks like what I have read and examples I have seen so what am I doing wrong? thanks for the help.

更新:

下面是两个布局我有:

LawsAndRegsList:

LawsAndRegsList:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/widget28"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">
    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/topLevelMenuBackground"
        android:orientation="horizontal">
        <Button
            android:id="@+id/btnAddExpense"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:text="@string/ButtonHome"
            android:layout_centerVertical="true" />
        <TextView
            android:id="@+id/lblExpenseCancel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="15dp"
            android:text="@string/LawsAndRegs"
            android:textColor="#ffffffff"
            android:textSize="20sp"
            android:layout_centerVertical="true" />
    </RelativeLayout>
    <ListView
        android:id="@+id/listView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

LawsAndRegsListItem:

LawsAndRegsListItem:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/widget28"
    android:layout_width="fill_parent"
    android:background="@drawable/topLevelMenuCellBackground"
    android:layout_height="40px">
    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <ImageView
            android:id="@+id/imageItem"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:layout_centerVertical="true"
            android:layout_gravity="center_vertical" />
        <TextView
            android:id="@+id/textTop"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:textColor="#111479"
            android:text="hello"
            android:layout_toRightOf="@+id/imageItem"
            android:textStyle="bold"
            android:layout_marginLeft="10dp" />
        <ImageButton
            android:src="@drawable/OrangeAccessoryButton"
            android:layout_width="wrap_content"
            android:layout_height="25dp"
            android:layout_alignParentRight="true"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="15dp"
            android:layout_centerVertical="true"
            android:id="@+id/imageButton1"
            android:background="@android:color/transparent" />
    </RelativeLayout>
</LinearLayout>

更新#2:

加了我LIstAdapter code:

Added my LIstAdapter code:

公共类LawsAndRegsListAdapter:BaseAdapter{    活动背景;

public class LawsAndRegsListAdapter : BaseAdapter { Activity context;

public List<LawsAndRegs> items;

public LawsAndRegsListAdapter (Activity context) //We need a context to inflate our row view from
{
    this.context = context;

    MY_SEB_SERVICE_ContentWS.ContentWS contentWS = new MY_WEB_SERVICE_ContentWS.ContentWS ();
    string sMenu = contentWS.GetMenuXML (146, 1, "", 0, 1033);

    XmlRootAttribute r = new XmlRootAttribute ("Item");
    var ser = new XmlSerializer (typeof(Item), r);
    StringReader stringReader;
    stringReader = new StringReader (sMenu);
    Item obj = (Item)ser.Deserialize (stringReader);
    ItemMenuItem[] m = obj.Menu.Item;
    ItemMenuItem larMenu = null;
    foreach (ItemMenuItem mnu in m)
    {
        if (mnu.ItemID == 155)
        {
            if (this.items == null)
                this.items = new List<LawsAndRegs> ();
            larMenu = mnu;
            break;
        }
    }

    if (larMenu != null)
    {
        foreach (ItemMenuItemMenuItem imimi in larMenu.Menu.Item)
        {
            LawsAndRegs lar = new LawsAndRegs();
            lar.Name = (string)imimi.Items[2];
            lar.Image = (string)imimi.Items[3];
            this.items.Add (lar);
        }
    }
}

public override int Count
{
    get { return items.Count; }
}

public override Java.Lang.Object GetItem(int position)
{
    return position;
}

public override long GetItemId(int position)
{
    return position;
}

public LawsAndRegs GetItemAtPosition(int position)
{
    return items[position];
}

public override View GetView(int position, View convertView, ViewGroup parent)
{
    //Get our object for this position
    var item = items[position];         

    //Try to reuse convertView if it's not  null, otherwise inflate it from our item layout
    // This gives us some performance gains by not always inflating a new view
    // This will sound familiar to MonoTouch developers with UITableViewCell.DequeueReusableCell()
    var view = (convertView ?? context.LayoutInflater.Inflate(Resource.Layout.LawsAndRegsListItem, parent, false)) as LinearLayout;

    //Find references to each subview in the list item's view
    ImageView imgView = (ImageView)view.FindViewById(Resource.Id.imageItem);
    imgView.Clickable = true;
    TextView textTop = (TextView)view.FindViewById(Resource.Id.textTop);
    textTop.Clickable = true;

    var bm = BitmapFactory.DecodeStream(
        new Java.Net.URL("http://www.SOME_SITE.com/" + item.Image).OpenStream());
    imgView.SetImageBitmap(bm);

    //Assign this item's values to the various subviews
    textTop.SetText(item.Name, TextView.BufferType.Normal);

    view.Clickable = true;

    //Finally return the view
    return view;
}

}

我添加了view.clickable code在试图得到这个工作。

I added the view.clickable code in trying to get this to work.

推荐答案

最后!我发现我的问题......事实证明,这个问题是我在ListView的ImageButton。它偷的焦点和消费的触摸事件。所以在我的自定义适配器,在GetView我需要做类似如下:

Finally!! I found out my issue... it turned out that the problem was my ImageButton in the ListView. It was stealing the focus and consuming the touch events. So in my custom Adapter, in the GetView I needed to do something like the following:

var imageButton = view.FindViewById<ImageButton>(Resource.Id.imageButton1);
imageButton.Focusable = false;
imageButton.FocusableInTouchMode = false;
imageButton.Clickable = true;

imageButton.Click += (sender, args) => Console.WriteLine("ImageButton {0} clicked", position);

这将删除图像按钮的焦点。解决的办法是给我在这里:http://forums.xamarin.com/discussion/871/how-do-i-get-itemclick-of-a-listview-to-get-called-not-sure-what-have-wrong#latest通过Cheesebaron。谢谢!!! Cheesebaron

That removes the focus from the image button. The solution was given to me here: http://forums.xamarin.com/discussion/871/how-do-i-get-itemclick-of-a-listview-to-get-called-not-sure-what-have-wrong#latest by Cheesebaron. Thank you Cheesebaron!!!

我希望这可以帮助其他新手有一个类似的问题!

I hope this may help another newbie with a similar issue!!