MaterialDesign

1. toolbar
2. 侧边栏
3. 悬浮按钮
4. Snackbar

toolbar
布局文件
res/values/styles.xml更改

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

<android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="wrap_content"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            android:popupTheme="@style/ThemeOverlay.AppCompat.Light">
        </android.support.v7.widget.Toolbar>

侧边栏
布局文件

<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/drawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context="com.example.bbw.materialdesigndemo.MainActivity">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="wrap_content"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            android:popupTheme="@style/ThemeOverlay.AppCompat.Light">
        </android.support.v7.widget.Toolbar>

        <android.support.design.widget.FloatingActionButton
            android:id="@+id/fab"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom|end"
            android:layout_margin="16dp"
            android:src="@drawable/ic_done"
            android:elevation="8dp"/>
    </android.support.design.widget.CoordinatorLayout>

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:menu="@menu/nav_menu"
        app:headerLayout="@layout/nav_header"/>

</android.support.v4.widget.DrawerLayout>

nav_menu

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single">
        <item
            android:id="@+id/nav_call"
            android:icon="@drawable/nav_call"
            android:title="call"/>
        <item
            android:id="@+id/nav_friends"
            android:icon="@drawable/nav_friends"
            android:title="friends"/>
        <item
            android:id="@+id/nav_location"
            android:icon="@drawable/nav_location"
            android:title="location"/>
        <item
            android:id="@+id/nav_mail"
            android:icon="@drawable/nav_mail"
            android:title="mail"/>
        <item
            android:id="@+id/nav_task"
            android:icon="@drawable/nav_task"
            android:title="task"/>
    </group>

</menu>

nav_header.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="180dp"
    android:padding="10dp"
    android:background="@color/colorPrimaryDark">

    <de.hdodenhof.circleimageview.CircleImageView
        android:id="@+id/header_image"
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:src="@drawable/nav_icon"
        android:layout_centerInParent="true"/>

    <TextView
        android:id="@+id/mail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="******@mail"
        android:textColor="#fff"
        android:textSize="14sp"/>

    <TextView
        android:id="@+id/username"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/mail"
        android:text="***"
        android:textColor="#fff"
        android:textSize="14sp"/>


</RelativeLayout>

 navigationView.setCheckedItem(R.id.nav_call);//设置默认选中的item
        navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                drawerLayout.closeDrawers();
                return true;
            }
        });

悬浮按钮和Snackbar
布局文件