带有单选按钮的可展开列表视图.选择“一个无线电组的值”，“组展开时多个”

Question

我正在android应用程序中复制一台设备的检查表。有一个可扩展列表视图，其中组数据由机器的不同系统组成，子数据包含带有RadioGroup的项目清单，供技术人员指示项目的通过/失败状态。所有操作都很好，除了在一个子组中为RadioButton选择值时，它会在其他组中为相同的RadioButton选择一个值。所以如果我有：

Group 1
  Question 1
    Passed
    Failed
    Corrected
    NA
  Question 2
    Passed
    Failed
    Corrected
    NA
Group 2
  Question 1
    Passed
    Failed
    Corrected
    NA
  Question 2
    Passed
    Failed
    Corrected
    NA

如果我在第1组的两个问题中都选择了"通过"，而从未进入第2组，那么当展开时，那里的1个或两个无线电组也将选择"通过"。

我使用RadioGroup创建子组的布局看起来像

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginLeft="15dip">
<TextView
android:id="@+id/questionText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<RadioGroup
android:tag="actionGroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RadioButton
  android:tag="passed"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Passed"/>
<RadioButton
  android:tag="failed"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Failed"/>
<RadioButton
  android:tag="corrected"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Corrected"/>
<RadioButton
  android:tag="na"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="NA"/>
</RadioGroup>
</LinearLayout>

BaseExpandableListAdapter 的实例化

ExpandableListView inspectionQuestions = (ExpandableListView) FindViewById(Android.Resource.Id.List);
inspectionQuestions.SetAdapter(new ExpAdapter(this));

BaseExpandableListAdapter

public class ExpAdapter : BaseExpandableListAdapter
{
    private readonly Context context;
    Questions questions = new Questions();
    private int seed = 1000;
    public ExpAdapter(Context ctx)
    {
        context = ctx;
    }
    public override Object GetChild(int groupPosition, int childPosition)
    {
        return null;
    }
    public override long GetChildId(int groupPosition, int childPosition)
    {
        return 0;
    }
    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(Resource.Layout.inspection_row_2, null);
        }
        int currentID;
        TextView question = (TextView) convertView.FindViewById(Resource.Id.questionText);
        RadioGroup radio = (RadioGroup) convertView.FindViewWithTag("actionGroup");
        radio.Id = seed++;
        RadioButton pass = (RadioButton) convertView.FindViewWithTag("passed");
        pass.Id = seed++;
        RadioButton fail = (RadioButton) convertView.FindViewWithTag("failed");
        fail.Id = seed++;
        RadioButton correct = (RadioButton)convertView.FindViewWithTag("corrected");
        correct.Id = seed++;
        RadioButton na = (RadioButton)convertView.FindViewWithTag("na");
        na.Id = seed++;
        string[][] items = questions.childItems();
        question.Text = items[groupPosition][childPosition];
        return convertView;
    }
    public override int GetChildrenCount(int groupPosition)
    {
        return questions.childItems()[groupPosition].Length;
    }
    public override Object GetGroup(int groupPosition)
    {
        return null;
    }
    public override long GetGroupId(int groupPosition)
    {
        return 0;
    }
    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(Android.Resource.Layout.SimpleExpandableListItem1, null);
        }
        TextView groupName = (TextView) convertView.FindViewById(Android.Resource.Id.Text1);
        QuestionGrouper grouper = new QuestionGrouper();
        groupName.Text = grouper.groupItems()[groupPosition];
        return convertView;
    }
    public override bool IsChildSelectable(int groupPosition, int childPosition)
    {
        return true;
    }
    public override int GroupCount
    {
        get { return 9; }
    }
    public override bool HasStableIds
    {
        get { return false; }
    }
}

根据建议编辑GetChildView：

   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(Resource.Layout.inspection_row_2, null);
        }
        TextView question = (TextView) convertView.FindViewById(Resource.Id.questionText);
        RadioGroup radio = (RadioGroup) convertView.FindViewById(Resource.Id.activityGroup);
        int count = radio.ChildCount;
        if (count == 4)
        {
            return convertView;
        }
        RadioButton pass = new RadioButton(context) {Text = "Passed"};
        RadioButton fail = new RadioButton(context) {Text = "Failed"};
        RadioButton correct = new RadioButton(context) {Text = "Corrected"};
        RadioButton na = new RadioButton(context) {Text = "NA"};
        radio.AddView(pass);
        radio.AddView(fail);
        radio.AddView(correct);
        radio.AddView(na); 
        string[][] items = questions.childItems();
        question.Text = items[groupPosition][childPosition];
        return convertView;
    }

Answer 1

您确定每个RadioButton使用的@+id对于每个组都不同吗？这是我想到的第一件事。即使他们在不同的RadioGroup中，我也很确定他们需要有唯一的ID，这样你才能正确地执行findViewById。

Answer 2

您当然不应该从xml添加Child无线电组。。请尝试在运行时添加它。。。然后保留所有

Some键值对中的那些子级（子级位置为键和RadioButton对象）。。现在你没有

需要唯一性，因为您可以引用所有单选按钮。。我也有同样的问题，我这样做了，现在是

效果很好。。处理这些变得很容易，因为你总是在中得到childPosition

ExpandibleListView从而使其易于访问。。

Answer 3

对每个项目使用ListView和充气视图。请参阅此链接：ListView中的RadioGroup