C# ListView中的ImageButton不可单击
我目前正在学习在Cwith xamarin中开发一个android应用程序,问题是我列表中的ImageButtons不可点击,而且我似乎无法找到问题所在 我在其他帖子中找到的解决方案对我也不起作用 这是我的密码: 我的片段:C# ListView中的ImageButton不可单击,c#,android,listview,C#,Android,Listview,我目前正在学习在Cwith xamarin中开发一个android应用程序,问题是我列表中的ImageButtons不可点击,而且我似乎无法找到问题所在 我在其他帖子中找到的解决方案对我也不起作用 这是我的密码: 我的片段: public class MenuFragment : Fragment { private ListView menuListView; private List<MenuCategory> menuCategories; publi
public class MenuFragment : Fragment
{
private ListView menuListView;
private List<MenuCategory> menuCategories;
public override View OnCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
//Create mock menu category
menuCategories = new List<MenuCategory>();
menuCategories.Add(new MenuCategory(Resource.Drawable.specialsPromotions, "Promotion and Specials"));
menuCategories.Add(new MenuCategory(Resource.Drawable.dinner, "Dinner"));
var view = inflater.Inflate (Resource.Layout.MenuFragment, container, false);
menuListView = view.FindViewById<ListView> (Resource.Id.menuListView);
MenuCategoryAdapter adapter = new MenuCategoryAdapter (Activity, menuCategories);
menuListView.Adapter = adapter;
menuListView.ItemClick += menuListViewItemClick;
return view;
}
void menuListViewItemClick (object sender, AdapterView.ItemClickEventArgs e)
{
Console.WriteLine ("Menu Category selected: " + menuCategories [e.Position].CategoryName);
}
}
我的适配器:
public class MenuCategoryAdapter : BaseAdapter<MenuCategory>
{
List<MenuCategory> menuCategories;
private Context context;
public MenuCategoryAdapter (Context context, List<MenuCategory> menuCategories)
{
this.context = context;
this.menuCategories = menuCategories;
}
public override int Count
{
get{ return menuCategories.Count; }
}
public override long GetItemId(int position)
{
return position;
}
public override MenuCategory this[int position]
{
get{ return menuCategories [position];}
}
public override View GetView (int position, View convertView, ViewGroup parent)
{
View row = convertView;
if (row == null)
{
row = LayoutInflater.From (context).Inflate (Resource.Layout.MenuCategoryListView, null, false);
}
ImageButton button = row.FindViewById<ImageButton> (Resource.Id.menuCategoryName);
button.SetBackgroundResource (menuCategories [position].BackgroundImage);
return row;
}
}
我的布局:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView
android:id="@+id/menuListView"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:descendantFocusability="blocksDescendants"/>
我有两个建议:
在GetView中添加setOnClickListener。我的例子是Java,没有C。
删除布局中的子体焦点。这可能没有必要。但如果设置为BlocksDescents,那么像ImageButton这样的布局的子项是不可单击的,我相信
如果您希望ImageButton和父Listview都可以单击,那么请尝试将BlocksDescents设置为Before子代,而我从来没有这样做过。谷歌文档@
GetView的代码段:
public override View GetView (int position, View convertView, ViewGroup parent)
{
...
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
...
如果您将属性android:clickable=true添加到项目线性布局中会怎么样?您的意思是在my ImageButton中将clickable设置为true?我试过了,但没用……不,我是说你的线性布局,真的。它可能会忽略单击,因此您的ImageButton也不会收到该单击。@joao2fast4u尝试在my LinearLaouts中添加clickable,但也不起作用..:然后,将onClickListener添加到MenuCategoryAdapter GetView方法中的ImageButton。
public override View GetView (int position, View convertView, ViewGroup parent)
{
...
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
...