Android DrawerLayout实现侧拉菜单功能

效果图

activity_main.xml

<?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" 
  tools:context="com.example.lenovo.mydrawerlayout.mainactivity"> 
<android.support.v4.widget.drawerlayout 
  android:layout_width="match_parent" 
  android:id="@+id/drawer_layout" 
  android:layout_height="match_parent"> 
  <linearlayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" 
    > 
    <android.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" /> 
    <textview 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="这是主界面" 
      /> 
  </linearlayout> 
  <linearlayout 
    android:layout_width="300dp" 
    android:layout_height="match_parent" 
    android:layout_gravity="left" 
    android:background="#f00" 
    > 
    <textview 
      android:id="@+id/t" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="这是侧拉界面" 
      /> 
  </linearlayout> 
</android.support.v4.widget.drawerlayout> 
</linearlayout> 

注：drawerlayout下有两个布局，drawerlayout的第一个子元素是主要内容，即抽屉没有打开时显示的布局，drawerlayout的第二个子元素是抽屉中的内容，即抽屉布局，layout_gravity为侧拉方向

因为用到toolbar所以要把actionbar替换了所以设置

values下设置styles.xml    为noactionbar

<resources> 
   <!-- base application theme. --> 
  <style name="apptheme" parent="theme.appcompat.light.noactionbar"> 
    <!-- customize your theme here. --> 
    <item name="colorprimary">@color/colorprimary</item> 
    <item name="colorprimarydark">@color/colorprimarydark</item> 
    <item name="coloraccent">@color/coloraccent</item> 
  </style> 
  <style name="apptheme.noactionbar"> 
    <item name="windowactionbar">false</item> 
    <item name="windownotitle">true</item> 
  </style> 
  <style name="apptheme.appbaroverlay" parent="themeoverlay.appcompat.dark.actionbar" /> 
  <style name="apptheme.popupoverlay" parent="themeoverlay.appcompat.light" /> 
</resources> 

mainactivity

package com.example.lenovo.mydrawerlayout; 
 import android.os.bundle; 
import android.support.design.widget.snackbar; 
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; 
import android.view.view; 
import android.widget.textview; 
public class mainactivity extends appcompatactivity { 
  @override 
  protected void oncreate(bundle savedinstancestate) { 
    super.oncreate(savedinstancestate); 
    setcontentview(r.layout.activity_main); 
    //toolbar代替actionbar 
    toolbar toolbar = (toolbar) findviewbyid(r.id.toolbar); 
    setsupportactionbar(toolbar); 
    // drawerlayout 
    drawerlayout drawer = (drawerlayout) findviewbyid(r.id.drawer_layout); 
    //toolbar上面最左边显示三杠图标监听drawerlayout 
    actionbardrawertoggle toggle = new actionbardrawertoggle( 
        this, drawer, toolbar, r.string.navigation_drawer_open, r.string.navigation_drawer_close); 
    drawer.setdrawerlistener(toggle); 
    toggle.syncstate(); 
    //侧拉页面字体 
    textview t= (textview) findviewbyid(r.id.t); 
    t.setonclicklistener(new view.onclicklistener() { 
      @override 
      public void onclick(view v) { 
        snackbar.make(v, "侧拉页面", snackbar.length_long) 
            .setaction("action", null).show(); 
      } 
    }); 
  } 
  @override 
  public void onbackpressed() { 
    drawerlayout drawer = (drawerlayout) findviewbyid(r.id.drawer_layout); 
    if (drawer.isdraweropen(gravitycompat.start)) { 
      drawer.closedrawer(gravitycompat.start); 
    } else { 
      super.onbackpressed(); 
    } 
  } 
}