主布局 （侧拉）

<?xml version="1.0" encoding="utf-8"?><android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/main_Dl"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.bwie.lizhi.text_1.MainActivity">    <LinearLayout        android:id="@+id/main_ll"        android:layout_width="200dp"        android:layout_height="match_parent"        android:layout_gravity="start"        android:choiceMode="singleChoice"        android:orientation="vertical">        <ImageView            android:id="@+id/Draw_iv"            android:layout_width="100dp"            android:layout_height="100dp"            android:layout_gravity="center"            android:background="#ddd" />        <ListView            android:id="@+id/Draw_lv"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_marginTop="10dp"></ListView>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:orientation="vertical">        <FrameLayout            android:id="@+id/main_fl"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1" />        <RadioGroup            android:id="@+id/main_rg"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="9"            android:orientation="horizontal">            <RadioButton                android:id="@+id/main_rb1"                android:layout_width="match_parent"                android:layout_height="match_parent"                android:layout_weight="1"                android:button="@null"                android:gravity="center"                android:text="首页" />            <RadioButton                android:id="@+id/main_rb2"                android:layout_width="match_parent"                android:layout_height="match_parent"                android:layout_weight="1"                android:button="@null"                android:gravity="center"                android:text="搜索" />            <RadioButton                android:id="@+id/main_rb3"                android:layout_width="match_parent"                android:layout_height="match_parent"                android:layout_weight="1"                android:button="@null"                android:gravity="center"                android:text="知识库" />            <RadioButton                android:id="@+id/main_rb4"                android:layout_width="match_parent"                android:layout_height="match_parent"                android:layout_weight="1"                android:button="@null"                android:gravity="center"                android:text="我的" />        </RadioGroup>    </LinearLayout></android.support.v4.widget.DrawerLayout>