[英]Android - Check checkbox in 'Custom ListView' using Boolean
我在C#Android應用程序中有一個自定義listview,每一行包含一個textview,ImageView和一個復選框。 單擊Listview項時,我想使用bool
值檢查該行的項目復選框。
MainActivity.cs
List<TableList> list = = new List<TableList>();
list.Add(new TableList("Germany"));
list.Add(new TableList("France"));
list.Add(new TableList("Finland"));
listView.ItemClick += delegate (object sender, AdapterView.ItemClickEventArgs e)
{
string selected = t.Name;
if (selected == "France")
{
Class1.bl = false; // Check the proper checkbox for France row
}
};
Class1.bl
是設置為true
的靜態公共布爾
ListView的ListAdapter和ListClass:
public class ListAdapter : BaseAdapter<TableList>
{
List<TableList> items;
Activity context;
public ListAdapter(Activity context, List<TableList> items)
: base()
{
this.context = context;
this.items = items;
}
public override long GetItemId(int position)
{
return position;
}
public override TableList 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.CoinList, null);
view.FindViewById<TextView>(Resource.Id.CoinName).Text = item.Name;
view.FindViewById<ImageView>(Resource.Id.imageView1).SetImageResource(Resource.Drawable.n);
if (Class1.bl == false)
{
view.FindViewById<CheckBox>(Resource.Id.checkBox1).Checked = true;
Class1.bl = true;
}
else
{
view.FindViewById<CheckBox>(Resource.Id.checkBox1).Checked = false;
}
return view;
}
}
public class TableList
{
public string Name;
public TableList(string Name)
{
this.Name = Name;
}
}
當我運行上面的代碼並選擇“法國”時,會檢查ChechBox
是否為法國,但是當我檢查其他項目(如德國)時,不會選中“德國的ChechBox
”。 為什么會這樣,我該如何解決?
我在您的TableList
類中添加了布爾值:
//I add the bool in this class, so you can change the CheckBox's state by your Data Source
//That means that your CheckBox's state based upon your Data Source.
public class TableList : Java.Lang.Object
{
public TableList(string name, bool b)
{
this.Name = name;
this.bl = b;
}
public string Name { get; set; }
public bool bl { get; set; }
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.