034 Android NavigationView和DrawerLayout实现抽屉式导航设计(侧边栏效果)

1.创建带侧滑效果的activity

右击，new---->activity---->选择NavgationDrawer Activity

2.xml文件布局

(1)activity_main_function.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"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <include
        layout="@layout/app_bar_main_function"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main_function"
        app:menu="@menu/activity_main_function_drawer" />

</android.support.v4.widget.DrawerLayout>

可以看到我们的最外层是DrawerLayout，包含了两个内容：include为显示内容区域，NavigationView为侧边抽屉栏。

NavigationView有两个app属性，分别为app:headerLayout和app:menu,headerLayout用于显示头部的布局（可选），menu用于建立MenuItem选项的菜单。

(2)nav_header_main_function.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="@dimen/nav_header_height"
    android:background="@drawable/side_nav_bar"
    android:gravity="bottom"
    android:orientation="vertical"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:theme="@style/ThemeOverlay.AppCompat.Dark">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:contentDescription="@string/nav_header_desc"
        android:paddingTop="@dimen/nav_header_vertical_spacing"
        app:srcCompat="@mipmap/ic_account_circle_white_48dp" />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="@dimen/nav_header_vertical_spacing"
        android:text="@string/nav_header_title"
        android:textAppearance="@style/TextAppearance.AppCompat.Body1" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/nav_header_subtitle" />

</LinearLayout>

(3)activity_main_function_drawer.xml(menu目录下)

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:showIn="navigation_view">

    <group android:checkableBehavior="single">
        <item
            android:id="@+id/nav_me"
            android:title="我"
            android:icon="@mipmap/ic_mine_gray_24"/>
        <item
            android:id="@+id/nav_friend"
            android:title="好友"
            android:icon="@mipmap/ic_friends_gray_24"/>
        <item
            android:id="@+id/nav_notification"
            android:title="通知"
            android:icon="@mipmap/ic_notification_gray_24"/>
        <item
            android:id="@+id/nav_message"
            android:title="私信"
            android:icon="@mipmap/ic_messages_gray_24"
            />
    </group>

    <group android:checkableBehavior="none"
        android:id="@+id/group_manage">
        <item
            android:id="@+id/nav_manage"
            android:title="应用管理"
            android:icon="@mipmap/ic_app_management_gray_24"/>
    </group>

    <item android:title="Communicate">
        <menu>
            <item
                android:id="@+id/nav_share"
                android:icon="@drawable/ic_menu_share"
                android:title="分享" />
            <item
                android:id="@+id/nav_send"
                android:icon="@drawable/ic_menu_send"
                android:title="发送" />
        </menu>
    </item>

</menu>

3.java后台

package com.example.administrator.test66smartbeijing;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomNavigationView;
import android.support.design.widget.NavigationView;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
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.Menu;
import android.view.MenuItem;
import android.widget.TextView;

import com.example.administrator.test66smartbeijing.fragment.GovernmentFragment;
import com.example.administrator.test66smartbeijing.fragment.HomePagerFragment;
import com.example.administrator.test66smartbeijing.fragment.NewsCenterFragment;
import com.example.administrator.test66smartbeijing.fragment.SettingFragment;
import com.example.administrator.test66smartbeijing.fragment.SmartServiceFragment;

import java.util.ArrayList;
import java.util.List;

public class MainFunctionActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    ViewPager viewPager;
    List<Fragment> fragments;
    BottomNavigationView bottomNavigationView;
    MenuItem menuItem;
    TextView tv_main_title;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_function);

        //设置顶部菜单栏
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        DrawerLayout drawer =findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.addDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);

        initBottomNavigationView();
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.nav_me) {
            // Handle the camera action
        } else if (id == R.id.nav_friend) {

        } else if (id == R.id.nav_notification) {

        } else if (id == R.id.nav_message) {

        } else if (id == R.id.nav_share) {

        } else if (id == R.id.nav_send) {

        }

        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }

    private class Adapter extends FragmentPagerAdapter {

        List<Fragment> list1;
        public Adapter(FragmentManager fm, List<Fragment> fragments) {
            super(fm);
            this.list1=fragments;
        }

        @Override
        public Fragment getItem(int position) {
            return list1.get(position);
        }

        @Override
        public int getCount() {
            return list1.size();
        }

    }
}