NavigationView在MD設(shè)計(jì)中非常重要，之前Google也提出了使用DrawerLayout來實(shí)現(xiàn)導(dǎo)航抽屜拄踪。這次拳魁，在Android Design Support Library中，Google提供了NavigationView來實(shí)現(xiàn)導(dǎo)航菜單界面姚糊。
這次我們寫的代碼在Android用TabLayout實(shí)現(xiàn)類似網(wǎng)易選項(xiàng)卡動(dòng)態(tài)滑動(dòng)效果這篇文章代碼的基礎(chǔ)上進(jìn)行修改授舟，所以最好先看看上面這篇文章
首先仍舊是配置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就是我們需要引入的Android Design Support Library释树，其次我們還引入了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標(biāo)簽包含了主界面的布局以及抽屜的布局，NavigationView標(biāo)簽下app:headerLayout="" 可以引入頭部文件
app:menu=""則引入菜單的布局寂纪。
頭部布局文件（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>
菜單布局文件（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="首頁"/>
<item
android:id="@+id/nav_messages"
android:icon="@drawable/ic_event"
android:title="事項(xiàng)"/>
<item
android:id="@+id/nav_friends"
android:icon="@drawable/ic_headset"
android:title="音樂"/>
<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="設(shè)置"/>
<item
android:icon="@drawable/ic_dashboard"
android:title="關(guān)于我們"/>
</menu>
</item>
</menu>
來看看主界面的java代碼（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對(duì)菜單的條目進(jìn)行了監(jiān)聽柬姚，如果被點(diǎn)擊則將條目設(shè)置為選中狀態(tài)并收回抽屜。當(dāng)然別忘了對(duì)toolbar的菜單選項(xiàng)進(jìn)行監(jiān)聽回調(diào)搬设，否則抽屜就出不來了。
（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);
}
最后運(yùn)行程序來看看效果
