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="freemusic@foxmail.com"
        android:textColor="#FFF"
        android:textSize="14sp"/>
</RelativeLayout>

这样我们的左侧侧滑栏就搞定了。