DrawerLayout NavigationView 实现侧滑（android MD 一）

快来打我* 2022-06-06 03:16 284阅读 0赞

> 实现侧滑的效果，采用md风格，用到的总要控件有  
> DrawerLayout和NavigationView

![这里写图片描述][SouthEast]

**[demo 下载地址][demo]**

**依赖MD系统库**

compile 'com.android.support:design:25.2.0'
    
    **获取Navigation Header**

View headerView =  
mNavigationView.inflateHeaderView(R.layout.drawer\_header);

> public class MainActivity extends AppCompatActivity 类

package com.example.navigationdemo;
    
    import android.support.annotation.NonNull;
    import android.support.design.widget.NavigationView;
    import android.support.v4.view.GravityCompat;
    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.util.Log;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.widget.ImageView;
    import android.widget.Toast;
    
    public class MainActivity extends AppCompatActivity {
        private DrawerLayout mDrawerlayout;
        private NavigationView mNavigationView;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            mDrawerlayout = (DrawerLayout)findViewById(R.id.drawerlayout);
            mNavigationView = (NavigationView) findViewById(R.id.navigationview);
            mNavigationView.setItemIconTintList(null); //icon显示自身的颜色
    
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);
    
            ActionBar bar = getSupportActionBar();
            bar.setHomeAsUpIndicator(R.mipmap.ic_launcher); //设置图标
            bar.setDisplayHomeAsUpEnabled(true);
    
            init();
        }
    
        private void init() {
            mNavigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
                MenuItem preItem = null;
    
                @Override
                public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                    if (preItem != null) {
                        preItem.setChecked(false);
                    }
                    item.setChecked(true);
                    Log.d("yw", "你点击了标题为" + item.getTitleCondensed() + "的菜单");
                    Toast.makeText(MainActivity.this, "你点击了标题为" + item.getTitleCondensed() + "的菜单", Toast.LENGTH_LONG).show();
                    mDrawerlayout.closeDrawers();
                    preItem = item; //保存一下上一次点击的item
                    return false;
                }
            });
    
            //获取navigationView的头部布局和里面的控件
            View headerView = mNavigationView.getHeaderView(0); //有些版本不兼容，headerView == null
            // 可以用这个获取  View headerView = mNavigationView.inflateHeaderView(R.layout.drawer_header);
            ImageView avatar = (ImageView) headerView.findViewById(R.id.avatar);
            avatar.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Log.d("yw", "你点击了头像");
                    mDrawerlayout.closeDrawers();
                    Toast.makeText(MainActivity.this, "你点击了头像", Toast.LENGTH_SHORT).show();
                }
            });
        }
    
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            Log.d("yw", item + "");
            switch (item.getItemId()) {
                case android.R.id.home:
                    mDrawerlayout.openDrawer(GravityCompat.START);
                    break;
                default:
                    break;
            }
            return super.onOptionsItemSelected(item);
        }
    }

> setNavigationItemSelectedListener：设置NavigationView里面的菜单Item点击事件；
> 
> getHeaderView(0); 获取NavigationView的头布局，然后通过findViewById得到具体的控件；
> 
> setItemIconTintList(null); //NavigationView里面的菜单Item的icon显示自身的颜色；

activity_main.xml 布局文件

<?xml version="1.0" encoding="utf-8"?>
    <android.support.v4.widget.DrawerLayout android:id="@+id/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:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.navigationdemo.MainActivity">
    
        <LinearLayout android:orientation="vertical" android:id="@+id/layout_content" android:layout_width="match_parent" android:layout_height="match_parent">
            <android.support.v7.widget.Toolbar android:id="@+id/toolbar" app:layout_scrollFlags="scroll|enterAlways" app:popupTheme="@style/ThemeOverlay.AppCompat.Light" android:layout_width="match_parent" android:layout_height="wrap_content" />
            <TextView android:text="我是内容" android:layout_gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" />
        </LinearLayout>
    
        
        <android.support.design.widget.NavigationView android:fitsSystemWindows="true" android:layout_gravity="left" android:id="@+id/navigationview" app:headerLayout="@layout/header" app:menu="@menu/drawer_menu" android:layout_marginRight="100dp" android:layout_width="match_parent" android:layout_height="match_parent" />
    </android.support.v4.widget.DrawerLayout>

*  NavigationView里的属性

> **app:headerLayout 指定相应的头布局；**
> 
> ![这里写图片描述][SouthEast 1]
> 
> **app:menu 指定相应的菜单；**  
> ![这里写图片描述][SouthEast 2]
> 
> **android:layout\_gravity**  
> 可以指定左left滑出，右right滑出
> 
> **android:layout\_width=”100dp”**  
> 设置抽屉的宽度

header.xml

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:background="@color/colorAccent" android:paddingTop="20dp" android:paddingBottom="20dp" android:layout_width="match_parent" android:layout_height="match_parent">
        <ImageView android:id="@+id/avatar" android:layout_gravity="center" android:src="@mipmap/ic_launcher" android:layout_width="wrap_content" android:layout_height="wrap_content" />
        <TextView android:text="jack_yang" android:gravity="center" android:layout_width="match_parent" android:layout_height="wrap_content" />
    </LinearLayout>

> menu\_drawer.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="@mipmap/ic_launcher" android:title="Home"/>
            <item android:id="@+id/nav_messages" android:icon="@mipmap/ic_launcher" android:title="Messages"/>
            <item android:id="@+id/nav_friends" android:icon="@mipmap/ic_launcher" android:title="Friends"/>
            <item android:id="@+id/nav_discussion" android:icon="@mipmap/ic_launcher" android:title="Discussion"/>
        </group>
    
        <item android:title="Sub items">
            <menu>
                <item android:icon="@mipmap/ic_launcher" android:checkable="true" android:title="Sub item 1"/>
                <item android:icon="@mipmap/ic_launcher" android:checkable="true" android:title="Sub item 2"/>
            </menu>
        </item>
    </menu>

> 欢迎指点，共同进步。

**[demo 下载地址][demo]**

[SouthEast]: /images/20220606/2b946efc2bd24435b63b7ff17e54f08e.png
[demo]: https://github.com/yang-mr/Study_Notes/tree/master/MDDemo/navigationdemo
[SouthEast 1]: /images/20220606/2a88754544324710b7cc2d524c1fe2c9.png
[SouthEast 2]: /images/20220606/3bb9930d6cd74bed884c4c186f800400.png