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我以编程方式创建了一个 RadioGroup 并在其中添加了一些 RadioButton（它们可以是 1 或 2 或 3，它取决于数据库）。我尝试了这段代码，但是当我尝试获取 RadioButton 选择的 ID 时它崩溃了

    final RadioGroup radioGroup = (RadioGroup) view.findViewById(R.id.radioGroupTeamId);
    for (int i = 0; i < teamID.size(); i++)
    {
        RadioButton radioButton = new RadioButton(getActivity());
        radioButton.setText(i);
        if(i == 0)
            radioButton.setChecked(true);
        radioButton.setId(i);
        radioGroup.addView(radioButton);
    }
    radioGroup.invalidate();

    ........
    ........

    builder1.setPositiveButton("Ok", new DialogInterface.OnClickListener()
    {
        public void onClick(DialogInterface dialog, int id)
        {
            int teamId = radioGroup..getCheckedRadioButtonId(); // Here the app crashes

            .........
        }
    });

XML 文件：

    <RadioGroup
        android:id="@+id/radioGroupTeamId"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >
    </RadioGroup>

日志：

    07-23 18:49:40.920: E/AndroidRuntime(5437): FATAL EXCEPTION: main
    07-23 18:49:40.920: E/AndroidRuntime(5437): android.content.res.Resources$NotFoundException: String resource ID #0x0
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.content.res.Resources.getText(Resources.java:247)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.widget.TextView.setText(TextView.java:3473)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at com.example.apptesina.FragmentFindOperations.selectedItem(FragmentFindOperations.java:185)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at com.example.apptesina.FragmentFindOperations.access$1(FragmentFindOperations.java:154)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at com.example.apptesina.FragmentFindOperations$1.onItemClick(FragmentFindOperations.java:148)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.widget.AdapterView.performItemClick(AdapterView.java:292)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.widget.AbsListView.performItemClick(AbsListView.java:1058)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.widget.AbsListView$PerformClick.run(AbsListView.java:2514)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.widget.AbsListView$1.run(AbsListView.java:3168)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.os.Handler.handleCallback(Handler.java:605)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.os.Handler.dispatchMessage(Handler.java:92)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.os.Looper.loop(Looper.java:137)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at android.app.ActivityThread.main(ActivityThread.java:4424)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at java.lang.reflect.Method.invokeNative(Native Method)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at java.lang.reflect.Method.invoke(Method.java:511)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
    07-23 18:49:40.920: E/AndroidRuntime(5437):     at dalvik.system.NativeStart.main(Native Method)
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1 回答 1

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这是因为您通过代码添加单选按钮 getCheckedRadioButtonId 所做的是查找单选按钮资源 id，这可以在您在 xml 布局中添加单选按钮时完成。

看到这个

 <RadioGroup
    android:id="@+id/radioGroupTeamId"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >

    <RadioButton
        android:id="@+id/radio1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/radio_male" 
        android:checked="true" />

    <RadioButton
        android:id="@+id/radio2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/radio_female" />

</RadioGroup>

或查看此帖子

您可以手动跟踪当前选定的项目或在每个单选按钮上创建一个单击侦听器。

于 2014-07-23T17:09:00.270 回答