BottomNavigationBar

来源：互联网发布：淘宝食品特种经营认证编辑：程序博客网时间：2024/06/09 14:20

Android底部导航栏的实现方式特别多，例如TabHost，TabLayout，或者TextView等，都可以实现底部导航栏的效果，但是却没有Google官方统一的导航栏样式，今天讲的就是Google最近添加到Material design中的底部导航栏BottomNavigationBar，也可以说是现今Android底部导航栏的一个标准与统一吧。

效果：

这里写图片描述

实现效果：

这里写图片描述

实现：

1.下载jar包
2.添加Maven

<dependency> 
  <groupId>com.ashokvarma.android</groupId> 
  <artifactId>bottom-navigation-bar</artifactId> 
  <version>1.2.0</version> 
  <type>pom</type> 
</dependency>

3.添加依赖。

compile 'com.ashokvarma.android:bottom-navigation-bar:1.2.0'

4.添加Ivy

<dependency org='com.ashokvarma.android' name='bottom-navigation-bar' rev='1.2.0'> 
  <artifact name='$AID' ext='pom'></artifact> 
</dependency>

布局设置

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 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" android:orientation="vertical" tools:context="com.example.wangchang.testbottomnavigationbar.MainActivity">&lt;FrameLayout  android:id=<span class="hljs-string">"@+id/layFrame"</span> android:layout_width=<span class="hljs-string">"match_parent"</span> android:layout_height=<span class="hljs-string">"0dp"</span> android:layout_weight=<span class="hljs-string">"1"</span> /&gt;&lt;com.ashokvarma.bottomnavigation.BottomNavigationBar  android:id=<span class="hljs-string">"@+id/bottom_navigation_bar"</span> android:layout_width=<span class="hljs-string">"match_parent"</span> android:layout_height=<span class="hljs-string">"wrap_content"</span> android:layout_gravity=<span class="hljs-string">"bottom"</span> /&gt;
</LinearLayout>

这个很简单，不用详叙。

主页面实现:

package com.example.wangchang.testbottomnavigationbar;import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentManager; 
import android.support.v4.app.FragmentTransaction; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle;
import com.ashokvarma.bottomnavigation.BottomNavigationBar; 
import com.ashokvarma.bottomnavigation.BottomNavigationItem;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity implements BottomNavigationBar.OnTabSelectedListener { 
    private ArrayList<Fragment> fragments;
<span class="hljs-meta">@Override</span><span class="hljs-function"><span class="hljs-keyword">protected</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onCreate</span><span class="hljs-params">(Bundle savedInstanceState)</span> </span>{    <span class="hljs-keyword">super</span>.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    BottomNavigationBar bottomNavigationBar = (BottomNavigationBar) findViewById(R.id.bottom_navigation_bar);    bottomNavigationBar.setMode(BottomNavigationBar.MODE_FIXED);    bottomNavigationBar            .setBackgroundStyle(BottomNavigationBar.BACKGROUND_STYLE_STATIC            );    bottomNavigationBar.addItem(<span class="hljs-keyword">new</span> BottomNavigationItem(R.mipmap.ic_home_white_24dp, <span class="hljs-string">"Home"</span>).setActiveColorResource(R.color.orange))            .addItem(<span class="hljs-keyword">new</span> BottomNavigationItem(R.mipmap.ic_book_white_24dp, <span class="hljs-string">"Books"</span>).setActiveColorResource(R.color.teal))            .addItem(<span class="hljs-keyword">new</span> BottomNavigationItem(R.mipmap.ic_music_note_white_24dp, <span class="hljs-string">"Music"</span>).setActiveColorResource(R.color.blue))            .addItem(<span class="hljs-keyword">new</span> BottomNavigationItem(R.mipmap.ic_tv_white_24dp, <span class="hljs-string">"Movies &amp; TV"</span>).setActiveColorResource(R.color.brown))            .addItem(<span class="hljs-keyword">new</span> BottomNavigationItem(R.mipmap.ic_videogame_asset_white_24dp, <span class="hljs-string">"Games"</span>).setActiveColorResource(R.color.grey))            .setFirstSelectedPosition(<span class="hljs-number">0</span>)            .initialise();    fragments = getFragments();    setDefaultFragment();    bottomNavigationBar.setTabSelectedListener(<span class="hljs-keyword">this</span>);}<span class="hljs-comment">/** * 设置默认的 */</span><span class="hljs-function"><span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">setDefaultFragment</span><span class="hljs-params">()</span> </span>{    FragmentManager fm = getSupportFragmentManager();    FragmentTransaction transaction = fm.beginTransaction();    transaction.replace(R.id.layFrame, HomeFragment.newInstance(<span class="hljs-string">"Home"</span>));    transaction.commit();}<span class="hljs-function"><span class="hljs-keyword">private</span> ArrayList&lt;Fragment&gt; <span class="hljs-title">getFragments</span><span class="hljs-params">()</span> </span>{    ArrayList&lt;Fragment&gt; fragments = <span class="hljs-keyword">new</span> ArrayList&lt;&gt;();    fragments.add(HomeFragment.newInstance(<span class="hljs-string">"Home"</span>));    fragments.add(BookFragment.newInstance(<span class="hljs-string">"Books"</span>));    fragments.add(MusicFragment.newInstance(<span class="hljs-string">"Music"</span>));    fragments.add(TvFragment.newInstance(<span class="hljs-string">"Movies &amp; TV"</span>));    fragments.add(GameFragment.newInstance(<span class="hljs-string">"Games"</span>));    <span class="hljs-keyword">return</span> fragments;}<span class="hljs-meta">@Override</span><span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onTabSelected</span><span class="hljs-params">(<span class="hljs-keyword">int</span> position)</span> </span>{    <span class="hljs-keyword">if</span> (fragments != <span class="hljs-keyword">null</span>) {        <span class="hljs-keyword">if</span> (position &lt; fragments.size()) {            FragmentManager fm = getSupportFragmentManager();            FragmentTransaction ft = fm.beginTransaction();            Fragment fragment = fragments.get(position);            <span class="hljs-keyword">if</span> (fragment.isAdded()) {                ft.replace(R.id.layFrame, fragment);            } <span class="hljs-keyword">else</span> {                ft.add(R.id.layFrame, fragment);            }            ft.commitAllowingStateLoss();        }    }}<span class="hljs-meta">@Override</span><span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onTabUnselected</span><span class="hljs-params">(<span class="hljs-keyword">int</span> position)</span> </span>{    <span class="hljs-keyword">if</span> (fragments != <span class="hljs-keyword">null</span>) {        <span class="hljs-keyword">if</span> (position &lt; fragments.size()) {            FragmentManager fm = getSupportFragmentManager();            FragmentTransaction ft = fm.beginTransaction();            Fragment fragment = fragments.get(position);            ft.remove(fragment);            ft.commitAllowingStateLoss();        }    }}<span class="hljs-meta">@Override</span><span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onTabReselected</span><span class="hljs-params">(<span class="hljs-keyword">int</span> position)</span> </span>{}
}

这里主要注意一下Fragment的填充方式，静态工厂构造方法。

bottomNavigationBar 
                .addItem(new BottomNavigationItem(R.drawable.ic_home_white_24dp, "Home")) 
                .addItem(new BottomNavigationItem(R.drawable.ic_book_white_24dp, "Books")) 
                .addItem(new BottomNavigationItem(R.drawable.ic_music_note_white_24dp, "Music")) 
                .addItem(new BottomNavigationItem(R.drawable.ic_tv_white_24dp, "Movies & TV")) 
                .addItem(new BottomNavigationItem(R.drawable.ic_videogame_asset_white_24dp, "Games")) 
                .initialise();

bottomNavigationBar添加选项。

  bottomNavigationBar.setTabSelectedListener(new BottomNavigationBar.OnTabSelectedListener(){ 
            @Override 
            public void onTabSelected(int position) { 
            } 
            @Override 
            public void onTabUnselected(int position) { 
            } 
            @Override 
            public void onTabReselected(int position) { 
            } 
        });

bottomNavigationBar设置监听选项点击事件setTabSelectedListener。

设置导航栏模式

Attribute: bnbMode Values: mode_default, mode_fixed, mode_shifting
Method: setMode() Values:MODE_DEFAULT, MODE_FIXED, MODE_SHIFTING

分别是属性或者代码设置

 bottomNavigationBar 
.setMode(BottomNavigationBar.MODE_FIXED)；

设置导航栏背景模式

Attribute: background_style_default, background_style_static, background_style_ripple

Method:BACKGROUND_STYLE_DEFAULT,BACKGROUND_STYLE_STATIC, BACKGROUND_STYLE_RIPPLE

 bottomNavigationBar            .setBackgroundStyle(BottomNavigationBar.BACKGROUND_STYLE_RIPPLE)

MODE_FIXED+BACKGROUND_STYLE_STATIC效果

这里写图片描述

MODE_FIXED+BACKGROUND_STYLE_RIPPLE效果

这里写图片描述

MODE_SHIFTING+BACKGROUND_STYLE_STATIC效果

这里写图片描述

MODE_SHIFTING+BACKGROUND_STYLE_RIPPLE效果

这里写图片描述

值得一提，模式跟背景的设置都要在添加tab前面，不然不会有效果。

颜色设置

Attributes: bnbActiveColor, bnbInactiveColor, bnbBackgroundColor Value: Color value or resource
Methods: setActiveColor, setInActiveColor, setBarBackgroundColor Value: Color value or resource

 bottomNavigationBar 
.setActiveColor(R.color.primary) 
.setInActiveColor("#FFFFFF") 
.setBarBackgroundColor("#ECECEC")

in-active color : is the icon and text color of the in-active/un-selected tab

是图标和文字的颜色（选中/未选中）

active color : In BACKGROUND_STYLE_STATIC active color is the icon and text color of the active/selected tab. In BACKGROUND_STYLE_RIPPLE active color is the bottom bar background color (which comes with ripple animation)

在BACKGROUND_STYLE_STATIC 模式下颜色是图标和文字的颜色（选中/未选中），在BACKGROUND_STYLE_RIPPLE 模式下是底部导航栏背景色。

background color : In BACKGROUND_STYLE_STATIC background color is the bottom bar background color. In BACKGROUND_STYLE_RIPPLE background color is the icon and text color of the active/selected tab.

在BACKGROUND_STYLE_STATIC 模式下颜色是底部导航栏背景色，BACKGROUND_STYLE_RIPPLE模式下是图标和文字的颜色（选中/未选中）

默认颜色：

Default colors:
1. Theme’s Primary Color will be active color.
2. Color.LTGRAY will be in-active color.
3. Color.WHITE will be background color.

1.主题的PrimaryColor将是active color
2.Color.LTGRAY（灰色）是 in-active color
3.白色是背景色

代码示例：

        bottomNavigationBar 
                .addItem(new BottomNavigationItem(R.drawable.ic_home_white_24dp, "Home").setActiveColor(R.color.orange).setInActiveColor(R.color.teal)) 
                .addItem(new BottomNavigationItem(R.drawable.ic_book_white_24dp, "Books").setActiveColor("#FFFF00")) 
                .addItem(new BottomNavigationItem(R.drawable.ic_music_note_white_24dp, "Music").setInActiveColor("#00FFFF")) 
                .addItem(new BottomNavigationItem(R.drawable.ic_tv_white_24dp, "Movies & TV")) 
                .addItem(new BottomNavigationItem(R.drawable.ic_videogame_asset_white_24dp, "Games").setActiveColor(R.color.grey))

添加标记

  BadgeItem numberBadgeItem = new BadgeItem() 
                .setBorderWidth(4) 
                .setBackgroundColorResource(R.color.blue) 
                .setText("5") 
                .setHideOnSelect(autoHide.isChecked()); bottomNavigationBar            .addItem(<span class="hljs-keyword">new</span> BottomNavigationItem(R.drawable.ic_home_white_24dp, <span class="hljs-string">"Home"</span>).setActiveColorResource(R.color.orange).setBadgeItem(numberBadgeItem))</code></pre> 
效果：
  
  
  
  很棒吧，功能很全，效果很nice！
  
  代码下载：
 http://pan.baidu.com/s/1eR4DzGY
  
  github地址：
 https://github.com/Ashok-Varma/BottomNavigation
  
   
  
  来自： http://blog.csdn.net/qq_16131393/article/details/51419901

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