安卓开发笔记（三十四）:Material Design框架实现优美的左侧侧滑栏

首先我们先上图：
 

下面是主页面的代码，activity_main.xml:

<?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"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >
    <framelayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v7.widget.toolbar

            android:id= "@+id/toolbar"
            android:layout_width="match_parent"
            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>






    </framelayout>
<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>

2.mainactivity.java

import android.support.v4.view.gravitycompat;
import android.support.v4.widget.drawerlayout;
import android.support.v7.app.actionbar;
import android.support.v7.app.appcompatactivity;
import android.os.bundle;
import android.support.v7.widget.gridlayoutmanager;
import android.support.v7.widget.recyclerview;
import android.support.v7.widget.toolbar;
import android.view.menu;
import android.view.menuitem;
import android.widget.toast;

import java.util.arraylist;
import java.util.list;
import java.util.random;

public class mainactivity extends appcompatactivity {
    private drawerlayout mdrawerlayout;






    @override
    protected void oncreate(bundle savedinstancestate) {
        super.oncreate(savedinstancestate);
        setcontentview(r.layout.activity_main);
        toolbar toolbar = (toolbar) findviewbyid(r.id.toolbar);
        setsupportactionbar(toolbar);
        mdrawerlayout=(drawerlayout)findviewbyid(r.id.drawer_layout);
        actionbar actionbar=getsupportactionbar();
        if(actionbar!=null)

        {
            actionbar.setdisplayhomeasupenabled(true);
            //actionbar.sethomeasupindicator(r.mipmap.ic_menu);
        }




    }


    public boolean oncreateoptionsmenu(menu menu)
    {
        getmenuinflater().inflate(r.menu.toolbar,menu);
        return true;


    }
    public boolean onoptionsitemselected(menuitem item)
    {
        switch (item.getitemid()){

            case r.id.backup:
                toast.maketext(this,"你点击了上传",toast.length_short).show();
                break;
            case  r.id.delete:
                toast.maketext(this,"你点击了删除",toast.length_short).show();
                break;
            case  r.id.settings:
                toast.maketext(this,"你点击了设置",toast.length_short).show();
                break;
            case  r.id.home:
                mdrawerlayout.opendrawer(gravitycompat.start);
                break;
            default:
    }

        return true;
}


}

3.创建menu文件夹,并在文件夹下写上menu的布局文件，nav_menu.xml

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

</group>

    <item
        android:id="@+id/nac_call"
        android:title="给她打电话"
        android:icon="@mipmap/call"
        />
    <item
        android:id="@+id/nac_friends"
        android:title="抱抱"
        android:icon="@mipmap/friends"
        />
    <item
        android:id="@+id/nac_location"
        android:title="定位"
        android:icon="@mipmap/iconlocation"
        />
    <item
        android:id="@+id/nac_mail"
        android:title="发邮件"
        android:icon="@mipmap/mail"
        />
    <item
        android:id="@+id/nac_task"
        android:title="养宠物注意事项"
        android:icon="@mipmap/tasks"
        />
    <item
        android:id="@+id/nac_jihua"
        android:title="旅行计划"
        android:icon="@mipmap/jihua"
        />
</menu>

4.由于我们还使用了toobar，因此在menu文件夹下同样写上toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/backup"
        android:icon="@drawable/ic_backup"
        android:title="backup"
        app:showasaction="always"
        />
    <item
        android:id="@+id/delete"
        android:icon="@drawable/ic_delete"
        android:title="delete"
        app:showasaction="ifroom"
        />
    <item
        android:id="@+id/settings"
        android:icon="@drawable/settings"
        android:title="settings"
        app:showasaction="never"
        />


</menu>

5.layout文件夹下的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="@drawable/bg"
    >
<de.hdodenhof.circleimageview.circleimageview
    android:id="@+id/icon_image"
    android:layout_width="70dp"
    android:layout_height="70dp"
    android:layout_centerinparent="true"
    android:src="@drawable/meinv"
    />

    <textview
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/username"
        android:layout_above="@+id/mail"
        android:text="我妹妹"
        android:textcolor="#fff"
        android:textsize="14sp"/>
    <textview
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/mail"
        android:layout_alignparentbottom="true"
        android:text="[e-mail]"
        android:textcolor="#fff"
        android:textsize="14sp"/>
</relativelayout>

这样我们的左侧侧滑栏就搞定了。