【Android】模拟Android微信APK底部的TabHost选项卡

资源准备

下载一个微信apk，解压，并找出所需的资源图片。

layout中XML布局

<?xml version="1.0" encoding="UTF-8"?>
<!-- Tab导航 最新版 -->
<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" >

<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">

<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FFF" >

</FrameLayout>

<!-- TabWidget管理所有的选项卡，id名是android指定的 -->
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:visibility="gone" />

<!-- Frame下放置单选群组替代TAB效果 -->
<RadioGroup
android:id="@+id/main_radio"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#ccc"
android:gravity="center_vertical"
android:orientation="horizontal"
android:layout_alignParentBottom="true" >

<RadioButton
android:id="@+id/tab_icon_weixin"
style="@style/main_tab_bottom"
android:checked="true"
android:drawableTop="@drawable/tab_weixin_normal"
android:text="微信" />

<RadioButton
android:id="@+id/tab_icon_address"
style="@style/main_tab_bottom"
android:checked="false"
android:drawableTop="@drawable/tab_address_normal"
android:text="通讯录" />

<RadioButton
android:id="@+id/tab_icon_find"
style="@style/main_tab_bottom"
android:drawableTop="@drawable/tab_find_frd_normal"
android:text="发现" />

<RadioButton
android:id="@+id/tab_icon_myself"
style="@style/main_tab_bottom"
android:drawableTop="@drawable/tab_settings_normal"
android:text="我" />
</RadioGroup>
</RelativeLayout>
</TabHost>

style中XML文档

    <!-- MainTab选项卡中单选按钮的样式，其中包括了文本、selector、padding、宽高、权重等的设置 -->
    <style name="main_tab_bottom">
        <item name="android:textSize">13sp</item>
        <item name="android:textColor">#666666</item>
        <item name="android:gravity">center_horizontal</item>
 <!-- 该处引用drawable下面的一个xml文档(selector) -->
        <item name="android:paddingTop">5dp</item>
        <item name="android:layout_width">fill_parent</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_weight">1.0</item>
 <!-- 每个按钮的权重，相等则平分尺寸 -->
        <item name="android:button">@null</item>
 <!-- 隐藏单选按钮 -->
        <item name="android:layout_marginTop">1.0dip</item>
        <item name="android:paddingBottom">5.0dip</item>
    </style>

Activity中Java文件

package com.app;

import android.app.AlertDialog;
import android.app.TabActivity;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TabHost;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.TabWidget;

/**
 * Tab导航
 */
//public class Tabs extends TabActivity implements View.OnClickListener{
public class Tabs extends TabActivity{
public static TabHost mTabHost;
public static TabHost getmTabHost() {
return mTabHost;
}

private RadioGroup main_radio;
private RadioButton tab_icon_weixin, tab_icon_address, tab_icon_find,tab_icon_myself;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tabs);
mTabHost = getTabHost();
final TabWidget tabWidget = mTabHost.getTabWidget();
tabWidget.setStripEnabled(false);// 圆角边线不启用
//添加n个tab选项卡，定义他们的tab名，指示名，目标屏对应的类
mTabHost.addTab(mTabHost.newTabSpec("TAG1").setIndicator("0").setContent(new Intent(this, WeixinActivity.class)));
mTabHost.addTab(mTabHost.newTabSpec("TAG2").setIndicator("1").setContent(new Intent(this, AddressActivity.class)));
mTabHost.addTab(mTabHost.newTabSpec("TAG3").setIndicator("2").setContent(new Intent(this, FindActivity.class)));
mTabHost.addTab(mTabHost.newTabSpec("TAG4").setIndicator("3").setContent(new Intent(this, MyselfActivity.class)));
// 视觉上,用单选按钮替代TabWidget
main_radio = (RadioGroup) findViewById(R.id.main_radio);
tab_icon_weixin = (RadioButton) findViewById(R.id.tab_icon_weixin);
tab_icon_address = (RadioButton) findViewById(R.id.tab_icon_address);
tab_icon_find = (RadioButton) findViewById(R.id.tab_icon_find);
tab_icon_myself = (RadioButton) findViewById(R.id.tab_icon_myself);
main_radio.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int id) {
if (id == tab_icon_weixin.getId()) {
mTabHost.setCurrentTab(0);
} else if (id == tab_icon_address.getId()) {
mTabHost.setCurrentTab(1);
} else if (id == tab_icon_find.getId()) {
mTabHost.setCurrentTab(2);
} else if (id == tab_icon_myself.getId()) {
mTabHost.setCurrentTab(3);
}
}
});

// 设置当前显示哪一个标签
mTabHost.setCurrentTab(0);
// 遍历tabWidget每个标签，设置背景图片 无
for (int i = 0; i < tabWidget.getChildCount(); i++) {
View vv = tabWidget.getChildAt(i);
vv.getLayoutParams().height = 45;
// vv.getLayoutParams().width = 65;
vv.setBackgroundDrawable(null);
}
//findViewById(R.id.tab_icon_brand).setOnClickListener(this);
}
}

效果图