0

我想向用户显示所有单元及其所有子单元的列表,以在 ExpandableListView 中进行选择,他们可以在其中检查要移动的单元。由于在 ListView 中似乎有可点击的视图会阻止它自然展开和折叠,所以我将简单地允许 CheckedChange 事件根据 groupPosition 展开/折叠。但是,当我更改一个 CheckBox 上的检查时,几个或所有组都会响应,而不仅仅是我单击的组。

equilistparent.axml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="35dp"
android:gravity="center_vertical">
<CheckBox
    android:id="@+id/check"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="45dp" />
<TextView
    android:id="@+id/info"
    android:layout_width="300dp"
    android:layout_height="wrap_content"
    android:layout_margin="5dp"
    android:textSize="20dp"
    android:gravity="left" />
<AutoCompleteTextView
    android:id="@+id/sites"
    android:layout_width="100dp"
    android:layout_height="wrap_content"
    android:textSize="20dp"
    android:textColor="@android:color/black"
    android:background="@android:color/white"
    android:layout_margin="5dp"
    android:textCursorDrawable="@null"
    android:gravity="center_horizontal"
    android:hint="To Store" />
</LinearLayout>

自定义适配器

class EquipAdapter : BaseExpandableListAdapter
{
    private string[] Parent { get; set; }
    private List<List<CPEquipment>> Child { get; set; }
    private Context _context { get; set; }
    private IListAdapter _adapter { get; set; }
    private ExpandableListView _list { get; set; }

    public EquipAdapter(Context context, List<string> parent, List<List<CPEquipment>> child, IListAdapter adapter, ExpandableListView list)
    {
        _context = context;
        Parent = parent.ToArray();
        Child = child;
        _adapter = adapter;
        _list = list;
    }

    public override Object GetChild(int groupPosition, int childPosition)
    {
        List<CPEquipment> level1 = Child.ElementAt(groupPosition);
        CPEquipment level2 = level1.ElementAt(childPosition);

        return level2.Serial + " " + level2.Model;
    }

    public override long GetChildId(int groupPosition, int childPosition)
    {
        return Convert.ToInt32(groupPosition.ToString(CultureInfo.InvariantCulture) + childPosition.ToString(CultureInfo.InvariantCulture));
    }

    public override int GetChildrenCount(int groupPosition)
    {
        return Child.ElementAt(groupPosition).Count;
    }

    public override View GetChildView(int groupPosition, int childPosition, bool isLastChild, View convertView, ViewGroup parent)
    {
        if (convertView == null)
        {
            LayoutInflater inflater = (LayoutInflater) _context.GetSystemService(Context.LayoutInflaterService);
            convertView = inflater.Inflate(Android.Resource.Layout.SimpleExpandableListItem2, null);
        }

        TextView text = (TextView) convertView.FindViewById(Android.Resource.Id.Text2);
        text.Text = GetChild(groupPosition, childPosition).ToString();

        return convertView;
    }

    public override Object GetGroup(int groupPosition)
    {
        return Parent[groupPosition];
    }

    public override long GetGroupId(int groupPosition)
    {
        return groupPosition;
    }

    public override View GetGroupView(int groupPosition, bool isExpanded, View convertView, ViewGroup parent)
    {
        if (convertView == null)
        {
            LayoutInflater inflater = (LayoutInflater) _context.GetSystemService(Context.LayoutInflaterService);
            convertView = inflater.Inflate(Resource.Layout.equiplistparent, null);
        }

        TextView info = (TextView) convertView.FindViewById(Resource.Id.info);
        info.Text = GetGroup(groupPosition).ToString();
        AutoCompleteTextView acText = (AutoCompleteTextView) convertView.FindViewById(Resource.Id.sites);
        acText.Adapter = _adapter;

        CheckBox check = (CheckBox) convertView.FindViewById(Resource.Id.check);
        check.CheckedChange += (o, args) =>
                                   {
                                       int currGroup = groupPosition;
                                       if (args.IsChecked)
                                           _list.ExpandGroup(currGroup);
                                       else
                                       {
                                           _list.CollapseGroup(currGroup);
                                       }
                                   };
        return convertView;
    }

    public override bool IsChildSelectable(int groupPosition, int childPosition)
    {
        return true;
    }

    public override int GroupCount
    {
        get { return Parent.Length; }
    }

    public override bool HasStableIds
    {
        get { return true; }
    }

}

我尝试使用这个建议来解决这个问题,但它对 ListViews 自然展开或折叠的能力没有任何影响。

我尝试将复选框放在子级而不是父级中,并强制所有组打开。但是现在如果我检查其中的 3 个框,另外 3 个框将随机检查自己。我知道有一种方法可以在 ListViews 中使用复选框,但它们的行为与我的预期不同。MonoDroid 有问题吗?

4

1 回答 1

0

我最近自己经历了这个,终于让这一切都正常工作了。我在这里发布了我的原始问题以及我的最终解决方案,以使一切正常运行。不确定这是否会对您有所帮助,但这听起来很接近我遇到的问题并使用我的解决方案,我能够让它正常工作。

于 2012-07-02T21:23:41.750 回答