我如何在 listview 适配器中放置按钮点击计数器

Question

嗨，我仍然是 xamarin android 的初学者 :( 我通过单击按钮创建列表视图，当我单击按钮时，我将计算单击并显示在 button.text 中，但我也无法处理单击

这是我的适配器 GetView 代码：

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.list_ticket_view, null);
            view.FindViewById<TextView>(Resource.Id.maintxt).Text = item.maintitle;
            view.FindViewById<TextView>(Resource.Id.txtthwab).Text = item.thwab;

            var button1 = view.FindViewById<Button>(Resource.Id.button1);
             button1.Text = (item.counter).ToString();
         }

我让 button1 从 item.counter 获取起始值并开始计数 即 item.counter=10 来自类 当点击将 11,12,13,..等 最好的尊重

Answer 1

你可以试试这个：

class YourAdapter : BaseAdapter, View.IOnClickListener
    {

        private Dictionary<int, string> dictionary = new Dictionary<int, string>();

        int[] item;  //this is the data in my code ,you should replace your own data

    public YourAdapter(int[] value)  // the parameter use your own data
        {

            //copy your data into the dictionary
            item = value;
            for (int i = 0; i < item.Length; i++)
            {
                dictionary.Add(i,item[i].ToString());
            }
        }

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.list_ticket_view, null);
        view.FindViewById<TextView>(Resource.Id.maintxt).Text = item.maintitle;
        view.FindViewById<TextView>(Resource.Id.txtthwab).Text = item.thwab;

        var button1 = view.FindViewById<Button>(Resource.Id.button1);
        button1.Text = dictionary[position];
        button1.Tag = position;
        button1.SetOnClickListener(this);
        return convertView;
     }
}
 public void OnClick(View v)
        {
            var button = v as Button;
            int count = int.Parse(button.Text) + 1;
            button.Text = count.ToString();
            dictionary[(int) v.Tag] = count.ToString();
        }

让你的adapter 实现View.IOnClickListener 例如：

class MyAdapter : BaseAdapter ,View.IOnClickListener