small_sheep_android/app/src/main/res/layout/baseurl_dialog.xml

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

    <RadioGroup
        android:id="@+id/rg_url"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="15dp"
        android:gravity="center"
        android:orientation="vertical">
    </RadioGroup>

    <android.support.design.widget.TextInputEditText
        android:id="@+id/et_url"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="15dp"
        android:hint="请输入服务器地址"/>

    <TextView
        android:id="@+id/tv_enter"
        android:layout_width="200dp"
        android:layout_height="30dp"
        android:layout_gravity="center"
        android:layout_margin="15dp"
        android:background="@drawable/text_backgroud"
        android:gravity="center"
        android:text="确定"
        android:textColor="@drawable/text_color"/>
</LinearLayout>