安卓Design之NavigationView的使用

前面讲解了Design包下的TabLayout的使用，下面将带来NavagationView和DrawLayout以及toolbar的联动。

项目已经同步至：https://github.com/nanchen2251/designNavigation-and-tabLayout

NavigationView 通过提供抽屉导航所需的框架让实现更简单，同时它还能够直接通过菜单资源文件直接生成导航元素。把NavigationView作为DrawerLayout的内容视图来使用。NavigationView处理好了和状态栏的关系，可以确保NavigationView在API21+设备上正确的和状态栏交互。

上运行图：

以下代码在前面代码的基础上修改。

MainActivity.java

package com.example.nanchen.designtablayoutdemo;
 
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.design.widget.TabLayout;
import android.support.v4.view.GravityCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.widget.Toast;
 
import java.util.ArrayList;
import java.util.List;
 
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
 
 
    private DrawerLayout drawerLayout;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        ViewPager vp = (ViewPager) findViewById(R.id.main_vp);
 
        TabLayout tabLayout = (TabLayout) findViewById(R.id.main_tab_layout);
 
        Toolbar toolbar = (Toolbar) findViewById(R.id.main_toolbar);
        drawerLayout = (DrawerLayout) findViewById(R.id.main_drawerlayout);
 
        //设置Toolbar和DrawerLayout实现动画和联动
        this.setSupportActionBar(toolbar);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,0,0);
        drawerLayout.addDrawerListener(toggle);//设置监听
        toggle.syncState();//加上同步
        getSupportActionBar().setDefaultDisplayHomeAsUpEnabled(true);
        List<String> list = new ArrayList<>();
        for (int i = 1; i < 5; i++) {
//            list.add(String.format(Locale.CHINA,"第02d%页",i));
            list.add("第"+i+"页");
        }
        vp.setAdapter(new MyAdapter(getSupportFragmentManager(),list));
 
        tabLayout.setupWithViewPager(vp);
 
        NavigationView navigationView = (NavigationView) findViewById(R.id.main_navigation);
        navigationView.setNavigationItemSelectedListener(this);
    }
 
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.menu_item1:
                Toast.makeText(this,"你点击了菜单1",Toast.LENGTH_SHORT).show();
                break;
            case R.id.menu_item2:
                Toast.makeText(this,"你点击了菜单2",Toast.LENGTH_SHORT).show();
                break;
            case R.id.menu_item3:
                Toast.makeText(this,"你点击了菜单3",Toast.LENGTH_SHORT).show();
                break;
            case R.id.menu_item4:
                Toast.makeText(this,"你点击了菜单4",Toast.LENGTH_SHORT).show();
                break;
        }
        drawerLayout.closeDrawer(GravityCompat.START);
        return true;
    }
}

主布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.nanchen.designtablayoutdemo.MainActivity">
 
    <!--Toolbar，ActionBar的替代品-->
    <android.support.v7.widget.Toolbar
        android:id="@+id/main_toolbar"
        app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        android:background="@color/colorPrimary"
        android:layout_width="match_parent"
        android:layout_height="?actionBarSize"/>
     
   <android.support.v4.widget.DrawerLayout
       android:layout_width="match_parent"
       android:layout_height="0dp"
       android:id="@+id/main_drawerlayout"
       android:layout_weight="1">
 
       <LinearLayout
           android:orientation="vertical"
           android:layout_width="match_parent"
           android:layout_height="match_parent">
 
           <android.support.design.widget.TabLayout
               android:layout_width="match_parent"
               app:tabBackground="@color/colorPrimaryDark"
               app:tabTextColor="@android:color/white"
               app:tabSelectedTextColor="#04b4ae"
               android:layout_height="wrap_content"
               android:id="@+id/main_tab_layout"/>
 
           <android.support.v4.view.ViewPager
               android:layout_width="match_parent"
               android:layout_height="0dp"
               android:layout_weight="1"
               android:id="@+id/main_vp"/>
       </LinearLayout>
 
       <android.support.design.widget.NavigationView
           app:menu="@menu/navigation"
           android:id="@+id/main_navigation"
           android:layout_gravity="start"
           app:headerLayout="@layout/header"
           app:itemIconTint="@color/navigation_selector"
           app:itemTextColor="@color/navigation_selector"
           android:layout_width="match_parent"
           android:layout_height="match_parent">
 
       </android.support.design.widget.NavigationView>
   </android.support.v4.widget.DrawerLayout>
 
 
</LinearLayout>

　navigation.xml

<?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/single_1" android:title="单选1" android:icon="@mipmap/ic_launcher"/>
        <item android:id="@+id/single_2" android:title="单选2" android:icon="@mipmap/ic_launcher"/>
        <item android:id="@+id/single_3" android:title="单选3" android:icon="@mipmap/ic_launcher"/>
    </group>
 
 
    <item android:id="@+id/menu_item1" android:title="菜单1" android:icon="@mipmap/ic_launcher"/>
    <item android:id="@+id/menu_item2" android:title="菜单2" android:icon="@mipmap/ic_launcher"/>
    <item android:id="@+id/menu_item3" android:title="菜单3" android:icon="@mipmap/ic_launcher"/>
    <item android:id="@+id/menu_item4" android:title="菜单4" android:icon="@mipmap/ic_launcher"/>
 
</menu>

header.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:orientation="vertical"
              android:gravity="center"
              android:background="@drawable/header_bg"
              android:layout_height="200dp">
 
    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_launcher"/>
 
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="文本"/>
</LinearLayout>

header.bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
 
    <gradient android:type="linear" android:angle="45"
              android:startColor="#143e52" android:endColor="#06a0ff"/>
</shape>

navigation_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="#fa08ca" android:state_checked="true"/>
    <item android:color="#6b6a6a" android:state_checked="false"/>
</selector>