虽然网上有很多底部菜单栏的实现方式，但是实现方式各种各样，很多也不符合自己的口味，所以还是总结下底部菜单栏的实现方式，以便以后方便查询使用
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"
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" 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"> <!-- tabStripEnabled属性去掉底部下划线与选项卡间的下划线 --> <!-- layout_alignParentBottom属性即可将其放在底部菜单栏，注意，必须在RelativeLayout里 --> <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>
主要代码
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)); }}
运行效果如下：
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，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>
主要的代码
package com.loulijun.demo2;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; } } }
效果图
下载地址：
http://files.cnblogs.com/loulijun/SinaWeibo.zip
下面是几个参考：
农民伯伯：
http://www.cnblogs.com/over140/archive/2011/03/02/1968042.html
http://www.cnblogs.com/over140/archive/2010/08/30/1812290.html
kjsolo
http://www.cnblogs.com/soloho/archive/2012/03/17/2403232.html
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