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Fragment+FragmentTabHost实现底部菜单栏

2017-09-16 12:13 330 查看
转载请注明出处：http://blog.csdn.net/yangyu20121224/article/details/9016223  

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>  

<?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
1124b
="@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>  

<?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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<span style="font-size:12px;"><?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></span>  

<?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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<span style="font-size:12px;"><?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></span>  

<?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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<span style="font-size:12px;"><?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></span>  

<?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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<span style="font-size:12px;">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;  
    }  
}</span>  

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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<span style="font-size:12px;">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);       
    }     
}  
</span>  
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