BaseAdapter.GetView 即使列表计数大于 0 也不会调用方法

Question

public 覆盖 View GetView(int position, View convertView, ViewGroup parent)

即使计数大于零也不会调用此方法。

我想知道 GridView 和 BaseAdapter 的确切行为。

我已经尽力尝试了，但没有触发 GetView 方法。

代码片段：

    internal class SymbolAdapter : BaseAdapter
    {

        private object[] m_items;
        internal SymbolAdapter(Context context, Object[] items) : base()
        {
            this.context = context;
            m_items = items;
        }

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

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

        public override long GetItemId(int position)
        {
            return 0;
        }

        public override View GetView(int position, View convertView, ViewGroup parent)
        {
            View view = null;
            object item = m_items[position];
            if (convertView == null)
            {
                                    ImageView imageView = new ImageView(context);
                imageView.LayoutParameters = new AbsListView.LayoutParams(85, 85);
                imageView.SetScaleType(ImageView.ScaleType.CenterCrop);
                imageView.SetPadding(8, 8, 8, 8);
                view = imageView;
            }
            else
                view = convertView;
            return view;
        }
    }

请帮帮我

Answer 1

当我尝试在为 BaseAdapter 创建实例之前将视图添加到 GridView 的适配器属性时，问题已解决。

谢谢，

BaseAdapter.GetView 即使列表计数大于 0 也不会调用方法

BaseAdapter.GetView method is not called even if the list count is greater than 0

c#

android

android-gridview

baseadapter