使用Toolbar + DrawerLayout+RecyclerView实现侧滑菜单栏（一）

前言

开发的工程中想要使用第三方的侧滑菜单栏，偶然发现Google提供的API便使用一番，发现设计倒是巧妙，便来此与各位同友分享使用心得。

准备

• Android Studio 2.2 Preview 6
• Gradle添加依赖
  compile 'com.android.support:appcompat-v7:24.1.0'
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha4'
• 使用Android提供的模板生成简单的侧滑菜单项目
• 

代码分析

通过删减无用的代码，只对重要的部分进行开发，代码基本功能比较简单，就不进行赘述了

---

MainActivity.java主要代码

import android.os.Bundle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        DrawerLayout drawer = (DrawerLayout) 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();
    }


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

}

---

activity_main.xml主要代码

<android.support.v4.widget.DrawerLayout android:id="@+id/drawer_layout"
    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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start"

    >

    <include
        layout="@layout/app_bar_main"
        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"
        />

android.support.v4.widget.DrawerLayout>

---

app_bar_main.xml主要代码

"1.0" encoding="utf-8"?>
.support.design.widget.CoordinatorLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.example.myapplication.MainActivity"
    >

    .support.design.widget.AppBarLayout

        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay"
        >

        .support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay"
            />

    .support.design.widget.AppBarLayout>

    "@layout/content_main" />



.support.design.widget.CoordinatorLayout>

---

content_main.xml主要代码

<android.support.constraint.ConstraintLayout android:id="@+id/content_main"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.myapplication.MainActivity"
    tools:showIn="@layout/app_bar_main"
    >


android.support.constraint.ConstraintLayout>

---

nav_header_main.xml主要代码

<android.support.constraint.ConstraintLayout android:id="@+id/content_main"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.myapplication.MainActivity"
    tools:showIn="@layout/app_bar_main"
    >


android.support.constraint.ConstraintLayout>

---

结果

这样就实现了简单的侧滑菜单栏^_^