一、实现效果图
二、项目工程结构
三、详细代码编写
1、主tab布局界面，main_tab_layout：
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<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <FrameLayout android:id="@+id/realtabcontent" android:layout_width="fill_parent" android:layout_height="0dip" android:layout_weight="1" /> <android.support.v4.app.FragmentTabHost android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="@drawable/maintab_toolbar_bg"> <FrameLayout android:id="@android:id/tabcontent" android:layout_width="0dp" android:layout_height="0dp" android:layout_weight="0" /> </android.support.v4.app.FragmentTabHost> </LinearLayout> |
2、Tab按钮选项布局，tab_item_view.xml：
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<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <ImageView android:id="@+id/imageview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:focusable="false" android:padding="3dp" android:src="@drawable/tab_home_btn"> </ImageView> <TextView android:id="@+id/textview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="首页" android:textSize="10sp" android:textColor="#ffffff"> </TextView> </LinearLayout> |
3、fragment布局界面，这里只列出一个，fragment_1.xml：
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<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ImageView android:id="@+id/imageview" android:layout_width="fill_parent" android:layout_height="fill_parent" android:scaleType="fitCenter" android:src="@drawable/xianjian01" > </ImageView> </LinearLayout> |
4、Tab选项的自定义按钮资源文件，列出其中一个按钮，tab_home_btn：
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<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/icon_home_sel" android:state_selected="true"/> <item android:drawable="@drawable/icon_home_nor"/> </selector> |
5、Tab选项按钮背景资源文件，selector_tab_background.xml：
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<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/home_btn_bg" android:state_pressed="true"/> <item android:drawable="@drawable/home_btn_bg" android:state_selected="true"/> </selector> |
6、主Activity类，MainTabActivity.java：
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package com.yangyu.mycustomtab02; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentTabHost; import android.view.LayoutInflater; import android.view.View; import android.widget.ImageView; import android.widget.TabHost.TabSpec; import android.widget.TextView; /** * @author yangyu * 功能描述：自定义TabHost */public class MainTabActivity extends FragmentActivity{ //定义FragmentTabHost对象 private FragmentTabHost mTabHost; //定义一个布局 private LayoutInflater layoutInflater; //定义数组来存放Fragment界面 private Class fragmentArray[] = {FragmentPage1.class,FragmentPage2.class,FragmentPage3.class,FragmentPage4.class,FragmentPage5.class}; //定义数组来存放按钮图片 private int mImageViewArray[] = {R.drawable.tab_home_btn,R.drawable.tab_message_btn,R.drawable.tab_selfinfo_btn, R.drawable.tab_square_btn,R.drawable.tab_more_btn}; //Tab选项卡的文字 private String mTextviewArray[] = {"首页", "消息", "好友", "广场", "更多"}; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main_tab_layout); initView(); } /** * 初始化组件 */ private void initView(){ //实例化布局对象 layoutInflater = LayoutInflater.from(this); //实例化TabHost对象，得到TabHost mTabHost = (FragmentTabHost)findViewById(android.R.id.tabhost); mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent); //得到fragment的个数 int count = fragmentArray.length; for(int i = 0; i < count; i++){ //为每一个Tab按钮设置图标、文字和内容 TabSpec tabSpec = mTabHost.newTabSpec(mTextviewArray[i]).setIndicator(getTabItemView(i)); //将Tab按钮添加进Tab选项卡中 mTabHost.addTab(tabSpec, fragmentArray[i], null); //设置Tab按钮的背景 mTabHost.getTabWidget().getChildAt(i).setBackgroundResource(R.drawable.selector_tab_background); } } /** * 给Tab按钮设置图标和文字 */ private View getTabItemView(int index){ View view = layoutInflater.inflate(R.layout.tab_item_view, null); ImageView imageView = (ImageView) view.findViewById(R.id.imageview); imageView.setImageResource(mImageViewArray[index]); TextView textView = (TextView) view.findViewById(R.id.textview); textView.setText(mTextviewArray[index]); return view; } } |
7、Fragment页面，FragmentPage1.java：
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package com.yangyu.mycustomtab02; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class FragmentPage1 extends Fragment{ @Override public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_1, null); } } |