添加的EditText单选按钮旁边

我有一个自定义的对话preference 子类中，我想有一个 RadioGroup中三单选按钮。前两个是香草单选带标题的组件，但我想放在第三的的EditText 直接到正确的就那么被选中的按钮时，我可以输入自定义值。

I have a custom DialogPreference subclass in which I would like to have a RadioGroup with three radio buttons. The first two are vanilla RadioButton components with titles, but for the third I would like to place an EditText directly to the right of it so I can enter a custom value when that button is selected.

我试图把第三个按钮为水平的LinearLayout 沿的EditText 但随后的第三个按钮的功能不参加父 RadioGroup中了。

I have tried putting the third button into a horizontal LinearLayout along with the EditText but then the third button does not participate in the parent RadioGroup anymore.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:layout_height="match_parent">
    <RadioGroup
            android:id="@+id/lactate_radio"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >

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

        <RadioButton
                android:id="@+id/lactate_calibrated_value"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/lactate_calibrated_value" />
        <LinearLayout android:orientation="horizontal"
                      android:layout_width="match_parent"
                      android:layout_height="wrap_content">
            <RadioButton
                    android:id="@+id/lactate_custom_value"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/lactate_custom_value"/>

            <EditText
                    android:id="@+id/lactate_custom_value_edit_text"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"/>

        </LinearLayout>
    </RadioGroup>
</LinearLayout>

我也尝试添加该的LinearLayout 编程，但仍然有相同的行为。有什么办法通过明确告诉父 RadioGroup中关于第三个按钮或通过某种方式定位的EditText 要做到这一点，也许>适当地不使用水平的LinearLayout ？否则，我想我会写一个单选子类，应该是一个真正的政党！

I have also tried adding this LinearLayout programmatically but still had the same behavior. Is there any way to do this, perhaps by explicitly telling the parent RadioGroup about the third button or by somehow positioning the EditText appropriately without using a horizontal LinearLayout? Otherwise, I think I'll have to write a RadioButton subclass which ought to be a real party!