Android Design Support Library(二)用NavigationView实现抽屉菜单界面

NavigationView在MD设计中非常重要,之前Google也提出了使用DrawerLayout来实现导航抽屉。这次,在Android Design Support Library中,Google提供了NavigationView来实现导航菜单界面。

这次我们写的代码在Android用TabLayout实现类似网易选项卡动态滑动效果这篇文章代码的基础上进行修改,所以最好先看看上面这篇文章

首先仍旧是配置build.gradle:

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:22.2.0'
compile 'com.android.support:design:22.2.0'
compile 'com.android.support:recyclerview-v7:22.2.0'
compile 'com.android.support:cardview-v7:22.2.0'
}

‘com.android.support:design:22.2.0’com.android.support:design:22.2.0就是我们需要引入的Android Design Support Library,其次我们还引入了Recyclerview和Cardview。

主界面布局(activity_tab_layout.xml)

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
android:id="@+id/dl_main_drawer"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<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"
tools:context=".TabLayoutActivity"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabIndicatorColor="#ADBE107E"
app:tabMode="scrollable"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="@+id/nv_main_navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/navigation_header"
app:menu="@menu/drawer_view"/>
</android.support.v4.widget.DrawerLayout>

DrawerLayout标签包含了主界面的布局以及抽屉的布局,NavigationView标签下app:headerLayout=”” 可以引入头部文件
app:menu=””则引入菜单的布局。

头部布局文件(navigation_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:layout_height="150dp"
android:background="?attr/colorPrimaryDark"
android:orientation="horizontal"
android:theme="@style/ThemeOverlay.AppCompat.Dark">
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center_vertical"
android:layout_marginLeft="50dp"
android:background="@drawable/ic_user"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_gravity="center_vertical"
android:text="Liuwangshu"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
android:textSize="20sp"/>
</LinearLayout>

菜单布局文件(drawer_view.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/nav_home"
android:icon="@drawable/ic_dashboard"
android:title="首页"/>
<item
android:id="@+id/nav_messages"
android:icon="@drawable/ic_event"
android:title="事项"/>
<item
android:id="@+id/nav_friends"
android:icon="@drawable/ic_headset"
android:title="音乐"/>
<item
android:id="@+id/nav_discussion"
android:icon="@drawable/ic_forum"
android:title="消息"/>
</group>
<item android:title="其他">
<menu>
<item
android:icon="@drawable/ic_dashboard"
android:title="设置"/>
<item
android:icon="@drawable/ic_dashboard"
android:title="关于我们"/>
</menu>
</item>
</menu>

来看看主界面的java代码(TabLayoutActivity.java)

package com.example.liuwangshu.mytablayout;
import android.support.design.widget.NavigationView;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.view.GravityCompat;
import android.support.v4.view.ViewPager;
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.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import java.util.ArrayList;
import java.util.List;
public class TabLayoutActivity extends AppCompatActivity {
private DrawerLayout mDrawerLayout;
private ViewPager mViewPager;
private TabLayout mTabLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab_layout);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
final ActionBar ab = getSupportActionBar();
ab.setHomeAsUpIndicator(R.drawable.ic_menu);
ab.setDisplayHomeAsUpEnabled(true);
mViewPager = (ViewPager) findViewById(R.id.viewpager);
mDrawerLayout = (DrawerLayout) findViewById(R.id.dl_main_drawer);
NavigationView navigationView =
(NavigationView) findViewById(R.id.nv_main_navigation);
if (navigationView != null) {
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
menuItem.setChecked(true);
mDrawerLayout.closeDrawers();
return true;
}
});
}
initViewPager();
}

navigationView.setNavigationItemSelectedListener对菜单的条目进行了监听,如果被点击则将条目设置为选中状态并收回抽屉。当然别忘了对toolbar的菜单选项进行监听回调,否则抽屉就出不来了。
(TabLayoutActivity.java)

@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
mDrawerLayout.openDrawer(GravityCompat.START);
return true;
}
return super.onOptionsItemSelected(item);
}

最后运行程序来看看效果
这里写图片描述

github源码下载

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