Je ne veux que l'un des boutons radio à sélectionner, c'est-à-dire que la sélection multiple ne devrait pas être autorisée.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RadioGroup
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        <LinearLayout
            android:id="@+id/public_line"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
        <TextView
            android:id="@+id/Public"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="6"
            android:text="Public"
            android:layout_marginLeft="16dp"
            android:layout_marginTop="24dp"
            android:textSize="20dp"
            android:textColor="@android:color/black"/>
        <RadioButton
            android:id="@+id/public_button"
            android:layout_weight="1"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginRight="16dp"
            android:layout_marginTop="24dp"
            />

        </LinearLayout>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="16dp"
            android:layout_marginBottom="8dp"
            android:text="league is visible to the public,
                          that is, anyone can join your league"
            />
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <TextView
                android:id="@+id/Private"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="6"
                android:text="Private"
                android:layout_marginLeft="16dp"
                android:layout_marginTop="24dp"
                android:textSize="20dp"
                android:textColor="@android:color/black"/>
            <RadioButton
                android:id="@+id/private_button"
                android:layout_weight="1"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="16dp"
                android:layout_marginTop="24dp"
                />

        </LinearLayout>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="16dp"
            android:layout_marginBottom="8dp"
            android:text="Only people with invite code can join"
            />
    </RadioGroup>
    <TextView
        android:layout_alignParentBottom="true"
        android:background="@drawable/orange_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Done"
        android:padding="16dp"
        android:textSize="20dp"
        android:textColor="@android:color/black"
        android:layout_weight="1"
        android:gravity="center"/>
</RelativeLayout>
Here is my layout. It allows both the radio buttons to be selected. Can someone help me figure out what the problem is? From what I know the problem is that the radio buttons are not directly in the radio group, but how am I supposed to accommodate them in the radio group directly to get this same layout. Else is there an alternate way to solve the problem