android - 如何使用 RadioButton 扩充布局然后添加到 RadioGroup？

Question

我正在尝试使用具有两个 TextView 和一个 RadioButton 的行来扩展我的 Listview 布局。我希望以这种方式添加的所有 RadioButton 都在同一个 RadioGroup 中。这是我到目前为止所做的:

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View v = convertView;
        ViewHolder holder;
        if (v == null) {        
            LayoutInflater vi = 
                (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            v = vi.inflate(R.layout.config_grid_item, null);
            holder = new ViewHolder();
            holder.item1 = (TextView) v.findViewById(R.id.config_item1);
            holder.item2 = (TextView) v.findViewById(R.id.config_item2);
            holder.item3 = (RadioButton) v.findViewById(R.id.config_item3);
            group.addView(holder.item3);
            v.setTag(holder);
        }
        else
            holder=(ViewHolder)v.getTag();

        final Profile profile = profiles.get(position);
        if (profile != null) {
            holder.item1.setText(profile.IP);
            holder.item2.setText(profile.name);
        }
        return v;
    }

和行 XML:

<?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:minHeight="60dip">

    <TextView android:id="@+id/config_item2" android:text="Name"
        android:layout_height="wrap_content" android:layout_width="wrap_content"
        android:layout_gravity="center_vertical" android:width="130dip"
        android:padding="10dip" />

    <TextView android:id="@+id/config_item1" android:text="IP"
        android:layout_height="wrap_content" android:layout_width="wrap_content"
        android:layout_gravity="center_vertical" android:width="130dip"
        android:padding="10dip" />
    <RadioButton android:id="@+id/config_item3" android:width="40dip"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:checked="false" android:focusable="false"
        android:focusableInTouchMode="false" />
</LinearLayout>

它在 group.addView(holder.item3) 处崩溃。错误日志在这里:

08-15 13:37:21.178: ERROR/AndroidRuntime(19749): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewGroup.addViewInner(ViewGroup.java:1993)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewGroup.addView(ViewGroup.java:1888)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.RadioGroup.addView(RadioGroup.java:139)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewGroup.addView(ViewGroup.java:1845)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewGroup.addView(ViewGroup.java:1825)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at com.bluerisc.main.ConfigRowAdapter.getView(ConfigRowAdapter.java:67)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.AbsListView.obtainView(AbsListView.java:1357)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.ListView.measureHeightOfChildren(ListView.java:1200)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.ListView.onMeasure(ListView.java:1111)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.View.measure(View.java:8222)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3155)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.View.measure(View.java:8222)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3155)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1012)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:381)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:304)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.View.measure(View.java:8222)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3155)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.View.measure(View.java:8222)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3155)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.View.measure(View.java:8222)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewRoot.performTraversals(ViewRoot.java:805)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1764)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.os.Looper.loop(Looper.java:143)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at android.app.ActivityThread.main(ActivityThread.java:5068)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at java.lang.reflect.Method.invokeNative(Native Method)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at java.lang.reflect.Method.invoke(Method.java:521)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
08-15 13:37:21.178: ERROR/AndroidRuntime(19749):     at dalvik.system.NativeStart.main(Native Method)

从错误日志中，我可以猜测，因为 RadioButton 已经是行 xml 中 LinearLayout 的子项，所以它不想添加到 radioGroup。关于如何解决这个问题的任何想法？我基本上只想一次选择其中一个单选按钮，这就是我将它们添加到单选组的原因。

编辑:我刚刚有了听错误消息并尝试从 LinearLayout 中删除 View 的天才想法。它没有崩溃，但现在 RadioButton 没有出现在我的行​​中。进步不大？这是我添加/更改的内容:

        LinearLayout test = (LinearLayout) v.findViewById(R.id.LinearRadio);
        test.removeView(holder.item3);
        group.addView(holder.item3);

Answer 1

您不能同时将 View 添加到 2 个布局。
阅读您的编辑后:是的，您将无法查看该单选按钮，因为它已从其可见的父级中删除并添加到不可见的单选组中。

您似乎需要一个每行两行的单选 ListView 。 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 项目行为 simple_list_item_2 将满足需要。