Question

我有一个使用getView完成的自定义列表视图。它必须是4 textview和每行右侧的radiobutton。我在这里看到了很多这方面的例子，但是无法理解。这是我的getView函数。在这种情况下，我可以看到行，但是当我选择另一个单选按钮时仍然会检查无线电按钮。我应该添加什么功能，使radiobuttons正常工作，并获得所选的Id？感谢

private static class CitizenAdapter extends BaseAdapter {
         private LayoutInflater mInflater;
         public CitizenAdapter(Context context) {
                   mInflater = LayoutInflater.from(context);
                    }
         public int getCount() {
                    return sicilArr.size();
                    }
         public Object getItem(int position) {
                        return position;
                    }
         public long getItemId(int position) {
                        return position;
                    }       
         public View getView(final int position, View convertView, ViewGroup parent) {
                final ViewHolder holder;
                    if (convertView == null) {
                        convertView = mInflater.inflate(R.layout.table_row_citizen, null);
                        holder = new ViewHolder();
                        holder.text1 = (TextView) convertView.findViewById(R.id.TextView01);
                        holder.text2 = (TextView) convertView.findViewById(R.id.TextView02);
                        holder.text3 = (TextView) convertView.findViewById(R.id.TextView03);
                        holder.text4 = (TextView) convertView.findViewById(R.id.TextView04);
                        holder.radioCitizen = (RadioGroup) convertView.findViewById(R.id.radioGroupCitizen);
                        holder.radioButCitizen  = (RadioButton) convertView.findViewById(R.id.radioButtonCitizen);

                        holder.radioCitizen.setOnCheckedChangeListener(new OnCheckedChangeListener() {                              
                            @Override
                            public void onCheckedChanged(RadioGroup group, int checkedId) {

                            }
                        });
                        convertView.setTag(holder);
                    } else {
                        holder = (ViewHolder) convertView.getTag();
                    }       
                   holder.text1.setText(array1.get(position));
                   holder.text2.setText(array2.get(position));
                   holder.text3.setText(array3.get(position));  
                   holder.text4.setText(array4.get(position));


            return convertView;
           }        
             static class ViewHolder {      
                  TextView text1;
                  TextView text2;
                  TextView text3;
                  TextView text4;

                  RadioGroup radioCitizen;
                  RadioButton radioButCitizen;
                }       
            }

这也是我的xml行文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:gravity="left|center"
android:layout_width="wrap_content"
android:paddingBottom="10px"
android:paddingTop="10px"
android:paddingLeft="3px">    
 <TextView
    android:id="@+id/TextView01"
    android:layout_width="50dp"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:textSize="15dip"
    android:textStyle="bold"
    android:textColor="#d08021">
 </TextView>
<TextView
    android:id="@+id/TextView02"
    android:layout_width="120dp"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:textSize="15dip"
    android:textStyle="bold"
    android:textColor="#81A2BC">
 </TextView>
 <TextView
    android:id="@+id/TextView03"
    android:layout_width="120dp"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:textSize="15dip"
    android:textStyle="bold"
    android:textColor="#81A2BC">
 </TextView>    
 <TextView
    android:id="@+id/TextView04"
    android:layout_width="120dp"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:textSize="15dip"
    android:textStyle="bold"
    android:textColor="#81A2BC">
 </TextView> 
 <RadioGroup 
    android:id="@+id/radioGroupCitizen"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    <RadioButton
                        android:id="@+id/radioButtonCitizen"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content" />
 </RadioGroup>

Answer 1

一种方法是手动取消选中所有其他单选按钮。您可以创建将保持当前所选项目位置的变量。在getView中，根据当前位置是否等于所选位置，检查/取消选中当前单选按钮。使用时按下单选按钮可更改所选项目的位置并致电notifyDatasetChanged 另请查看此问题：Android ListView with RadioButton in singleChoice mode and a custom row layout

1）将private int selected = -1添加到CitizenAdapter 2）为每个单选按钮添加点击监听器：

holder.radioCitizen.setOnClickLisener(new View.OnClickListener() 
    {                              
        @Override
        public void onCheckedChanged(View view) {
            selected = (Integer) view.getTag();
            notifyDataSetChanged();
        }
    });

3）将每个radiobutton的标签设置为当前位置并设置检查状态：

// After you set text to 4 textviews
holder.radioButCitizen.setTag(position);
holder.radioButCitizen.setChecked(position == selected);

Answer 2

    int selected = 0;

@Override
public View getView(final int position, View convertView, ViewGroup parent) 
{
    // TODO Auto-generated method stub

    ViewHolder holder;
    final RadioButton motif;

    if (null == convertView) 
    {
        convertView = View
                .inflate(parent.getContext(), R.layout.motif_item, null);
        holder = new ViewHolder(convertView);
        convertView.setTag(holder);
    }

    holder = (ViewHolder) convertView.getTag();
    motif = (RadioButton) holder.getmotif();

    motif.setTag(position);

    motif.setText(motifList.get(position));

    if(position == 0)
    {
        motif.setChecked(true);
    }
    else
        motif.setChecked(false);

    motif.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            selected = position;
            notifyDataSetChanged();
        }
    });

    if(position == selected)
        motif.setChecked(true);
    else
        motif.setChecked(false);

    return convertView;
}

private class ViewHolder {

    private View mRow;
    private RadioButton motif = null;

    public ViewHolder(View row) {
        mRow = row;
    }

    public RadioButton getmotif() {
        if (motif == null) {
            motif = (RadioButton) mRow.findViewById(R.id.itemMotif);
        }
        return motif;
    }
}

在Android中使用自定义列表视图中的单选按钮

2 个答案: