无法获取要在 MonoDroid 中调用的 listView.ItemClick [英] Unable to get listView.ItemClick to be called in MonoDroid
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问题描述
我有以下代码:
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 ItemClick 不会被调用?
Can anyone tell me why the ItemClick would not get called?
它看起来像我读过的和我看到的例子，那么我做错了什么?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:
这是我的两种布局:
LawsAndRegs 列表:
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:
添加了我的 LIstAdapter 代码:
Added my LIstAdapter code:
公共类 LawsAndRegsListAdapter : BaseAdapter{活动上下文；
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 代码来尝试让它工作.
I added the view.clickable code in trying to get this to work.
推荐答案
终于！！我发现了我的问题......原来问题是我在 ListView 中的 ImageButton.它正在窃取焦点并消耗触摸事件.因此，在我的自定义适配器中，在 GetView 中我需要执行以下操作:
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);
这会从图像按钮中移除焦点.解决方案在这里给了我:http://forums.xamarin.com/discussion/871/how-do-i-get-itemclick-of-a-listview-to-get-由 Cheesebaron 称为 - 不确定 - 有 - 错误#latest.谢谢芝士男爵！！！
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!!!
我希望这可以帮助另一个有类似问题的新手！
I hope this may help another newbie with a similar issue!!
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