Android底部菜单栏的两种实现方式附完整源码

原创：http://www.haolizi.net/example/view_447.html

【实例简介】
【实例截图】

通过TabWidget实现

实现方式二：隐藏TabWidget，通过RadioGroup和RadioButton实现底部菜单栏

【核心代码】

实现方式一：通过TabWidget实现

这种方式主要是在布局中将TabWidget标签嵌套在RelativeLayout中，并且在TabWidget标签中中设置 android:layout_alignParentBottom="true"

另外，下划线和选项卡之间的线去除的方法时在TabWidget标签中设置属性android:tabStripEnabled="false"

xml：

<?xml version="1.0" encoding="utf-8"?>

<TabHost xmlns:android="http://schemas.android.com/apk/res/android"

android:id="@android:id/tabhost"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

<FrameLayout

android:id="@android:id/tabcontent"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:padding="5dp"

></FrameLayout>

<RelativeLayout

android:layout_width="fill_parent"

android:layout_height="fill_parent">

<TabWidget

android:id="@android:id/tabs"

android:tabStripEnabled="false"

android:background="#6E6E6E"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_alignParentBottom="true"

></TabWidget>

</RelativeLayout>

</TabHost>

实现代码如下

package com.loulijun.demo1;

import android.app.TabActivity;

import android.content.Intent;

import android.os.Bundle;

import android.widget.TabHost;

public class Demo1Activity extends TabActivity {

/** Called when the activity is first created. */

private TabHost tabhost;

private Intent intent1, intent2, intent3, intent4;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

tabhost = getTabHost();

intent1 = new Intent(Demo1Activity.this, One.class);

tabhost.addTab(tabhost.newTabSpec("one")

.setIndicator("电话",getResources().getDrawable(android.R.drawable.ic_menu_call))

.setContent(intent1));

intent2 = new Intent(Demo1Activity.this, Two.class);

tabhost.addTab(tabhost.newTabSpec("two")

.setIndicator("相机",getResources().getDrawable(android.R.drawable.ic_menu_camera))

.setContent(intent2));

intent3 = new Intent(Demo1Activity.this, Three.class);

tabhost.addTab(tabhost.newTabSpec("three")

.setIndicator("分享",getResources().getDrawable(android.R.drawable.ic_menu_share))

.setContent(intent3));

intent4 = new Intent(Demo1Activity.this, Four.class);

tabhost.addTab(tabhost.newTabSpec("four")

.setIndicator("更多",getResources().getDrawable(android.R.drawable.ic_menu_more))

.setContent(intent4));

}

实现方式二：隐藏TabWidget，通过RadioGroup和RadioButton实现底部菜单栏

这种方式更漂亮，也更灵活，网上基本用的是这种方式，通过setCurrentTabByTag来切换不同的选项卡

main.xml：

<?xml version="1.0" encoding="utf-8"?>

<TabHost xmlns:android="http://schemas.android.com/apk/res/android"

android:id="@android:id/tabhost"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<LinearLayout

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent">

<FrameLayout

android:id="@android:id/tabcontent"

android:layout_width="fill_parent"

android:layout_height="0.0dip"

android:layout_weight="1.0"/>

<TabWidget

android:id="@android:id/tabs"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="0.0"

android:visibility="gone"/>

<RadioGroup

android:id="@ id/main_tab"

android:background="@drawable/maintab_toolbar_bg"

android:orientation="horizontal"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:gravity="center_vertical"

android:layout_gravity="bottom">

<RadioButton

android:layout_marginTop="2.0dip"

android:text="@string/main_home"

android:drawableTop="@drawable/icon_1_n"

android:id="@ id/radio_button0"

style="@style/main_tab_bottom"/>

<RadioButton

android:layout_marginTop="2.0dip"

android:text="@string/main_news"

android:drawableTop="@drawable/icon_2_n"

android:id="@ id/radio_button1"

style="@style/main_tab_bottom"/>

<RadioButton

android:layout_marginTop="2.0dip"

android:text="@string/main_my_info"

android:drawableTop="@drawable/icon_3_n"

android:id="@ id/radio_button2"

style="@style/main_tab_bottom"/>

<RadioButton

android:layout_marginTop="2.0dip"

android:text="@string/menu_search"

android:drawableTop="@drawable/icon_4_n"

android:id="@ id/radio_button3"

style="@style/main_tab_bottom"/>

<RadioButton

android:layout_marginTop="2.0dip"

android:text="@string/more"

android:drawableTop="@drawable/icon_5_n"

android:id="@ id/radio_button4"

style="@style/main_tab_bottom"/>

</RadioGroup>

</LinearLayout>

</TabHost>

drawable/home_btn_bg.xml：切换时的效果：

<?xml version="1.0" encoding="UTF-8"?>

<selector

xmlns:android="http://schemas.android.com/apk/res/android">

<item android:state_focused="true" android:state_enabled="true" android:state_pressed="false" android:drawable="@drawable/home_btn_bg_s" />

<item android:state_enabled="true" android:state_pressed="true" android:drawable="@drawable/home_btn_bg_s" />

<item android:state_enabled="true" android:state_checked="true" android:drawable="@drawable/home_btn_bg_d" />

<item android:drawable="@drawable/transparent" />

</selector>

string/dimens.xml 尺寸文件：

<?xml version="1.0" encoding="utf-8"?>

<resources>

<dimen name="bottom_tab_padding_drawable">2.0dip</dimen>

<dimen name="bottom_tab_padding_up">5.0dip</dimen>

<dimen name="bottom_tab_font_size">10.0dip</dimen>

</resources>

string/drawables.xml 设置为透明:

<?xml version="1.0" encoding="utf-8"?>

<resources>

<item type="drawable" name="transparent">#00000000</item>

</resources>

string/styles.xml 样式文件:

<?xml version="1.0" encoding="utf-8"?>

<resources>

<style name="main_tab_bottom">

<item name="android:textSize">@dimen/bottom_tab_font_size</item>

<item name="android:textColor">#ffffffff</item>

<item name="android:ellipsize">marquee</item>

<item name="android:gravity">center_horizontal</item>

<item name="android:background">@drawable/home_btn_bg</item>

<item name="android:paddingTop">@dimen/bottom_tab_padding_up</item>

<item name="android:layout_width">fill_parent</item>

<item name="android:layout_height">wrap_content</item>

<item name="android:button">@null</item>

<item name="android:singleLine">true</item>

<item name="android:drawablePadding">@dimen/bottom_tab_padding_drawable</item>

<item name="android:layout_weight">1.0</item>

</style>

</resources>

代码实现：

import android.app.TabActivity;

import android.content.Intent;

import android.os.Bundle;

import android.view.Window;

import android.widget.RadioGroup;

import android.widget.TabHost;

import android.widget.RadioGroup.OnCheckedChangeListener;

public class MainTabActivity extends TabActivity implements OnCheckedChangeListener{

private RadioGroup mainTab;

private TabHost tabhost;

private Intent iHome;

private Intent iNews;

private Intent iInfo;

private Intent iSearch;

private Intent iMore;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.main);

mainTab=(RadioGroup)findViewById(R.id.main_tab);

mainTab.setOnCheckedChangeListener(this);

tabhost = getTabHost();

iHome = new Intent(this, HomeActivity.class);

tabhost.addTab(tabhost.newTabSpec("iHome")

.setIndicator(getResources().getString(R.string.main_home), getResources().getDrawable(R.drawable.icon_1_n))

.setContent(iHome));

iNews = new Intent(this, NewsActivity.class);

tabhost.addTab(tabhost.newTabSpec("iNews")

.setIndicator(getResources().getString(R.string.main_news), getResources().getDrawable(R.drawable.icon_2_n))

.setContent(iNews));

iInfo = new Intent(this, MyInfoActivity.class);

tabhost.addTab(tabhost.newTabSpec("iInfo")

.setIndicator(getResources().getString(R.string.main_my_info), getResources().getDrawable(R.drawable.icon_3_n))

.setContent(iInfo));

iSearch = new Intent(this,SearchActivity.class);

tabhost.addTab(tabhost.newTabSpec("iSearch")

.setIndicator(getResources().getString(R.string.menu_search), getResources().getDrawable(R.drawable.icon_4_n))

.setContent(iSearch));

iMore = new Intent(this, MoreActivity.class);

tabhost.addTab(tabhost.newTabSpec("iMore")

.setIndicator(getResources().getString(R.string.more), getResources().getDrawable(R.drawable.icon_5_n))

.setContent(iMore));

}

@Override

public void onCheckedChanged(RadioGroup group, int checkedId) {

switch(checkedId){

case R.id.radio_button0:

this.tabhost.setCurrentTabByTag("iHome");

break;

case R.id.radio_button1:

this.tabhost.setCurrentTabByTag("iNews");

break;

case R.id.radio_button2:

this.tabhost.setCurrentTabByTag("iInfo");

break;

case R.id.radio_button3:

this.tabhost.setCurrentTabByTag("iSearch");

break;

case R.id.radio_button4:

this.tabhost.setCurrentTabByTag("iMore");

break;

}