<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    android:id="@+id/main_content"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout

        android:id="@+id/appbar"

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

        <android.support.v7.widget.Toolbar

            android:id="@+id/toolbar"

            android:layout_width="match_parent"

            android:layout_height="?attr/actionBarSize"

            android:background="?attr/colorPrimary"

            app:layout_scrollFlags="scroll|enterAlways" />

        <android.support.design.widget.TabLayout

        android:id="@+id/tabs"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        app:tabGravity="fill" />

    </android.support.design.widget.AppBarLayout>

    <!--可滑动的布局内容-->

    <android.support.v7.widget.RecyclerView

        android:id="@+id/recyclerView"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    <android.support.design.widget.FloatingActionButton

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:src="@drawable/ic_discuss"

        android:layout_gravity="bottom|end"/>

</android.support.design.widget.CoordinatorLayout>