FragmentTabHost的基本使用（二）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#282828"
    android:orientation="vertical" >
    
<!-- android.support.v4.app.FragmentTabHost 来自android.support.v4.jar的扩展包-->
    <android.support.v4.app.FragmentTabHost
        android:id="@android:id/tabhost"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_weight="0" />
    </android.support.v4.app.FragmentTabHost>

    
    
    <!-- 这个 FrameLayou和上一个 FragmentTabHost 在 xml的位置决定了  界面里 Tab的位置是在上面的 -->
    <FrameLayout
        android:id="@+id/realtabcontent"
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="1" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="第一个Fragment"
        android:textSize="30sp" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/imageview"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_gravity="center"
        android:focusable="false"
        android:padding="3dp" >
    </ImageView>

    <TextView
        android:id="@+id/textview_tab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:textColor="@drawable/tab_textview_color"
        android:textSize="10sp" >
    </TextView>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_selected="true" android:color="#ffcc00"/>
    <item android:color="#966400"/>

</selector>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <!-- alarmclock_sel,alarmclock_nor，做好并且放在drawable里的的图标 -->
    <item android:drawable="@drawable/alarmclock_sel" android:state_selected="true"/>
    <item android:drawable="@drawable/alarmclock_nor"/>

</selector>

package com.example.thealarmclock;

import com.example.tabhost.AlarmclockFragment;
import com.example.tabhost.CountdowntimerFragment;
import com.example.tabhost.WorldclockFragment;
import com.example.tabhost.StopwatchFragment;
import android.annotation.SuppressLint;
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.view.Window;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.TabHost.TabSpec;

/**
 * 功能描述：自定义TabHost
 */
public class MainActivity extends FragmentActivity
{

    // 定义FragmentTabHost对象
    private FragmentTabHost mTabHost = null;

    // 定义一个布局
    private LayoutInflater layoutInflater;

    // 定义数组来存放Fragment界面
    private Class fragmentArray[] = { AlarmclockFragment.class, WorldclockFragment.class, StopwatchFragment.class,
            CountdowntimerFragment.class };

    // 定义数组来存放按钮图片
    private int mImageViewArray[] = { R.drawable.tab_alarmclock_btn, R.drawable.tab_worldclock_btn,
            R.drawable.tab_stopwatch_btn, R.drawable.tab_countdowntimer_btn };

    // Tab选项卡的文字
    private String mTextviewArray[] = { "闹钟", "世界时间", "秒表", "计时器" };

    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.layout_main);

        // FragmentTabHost的setup方法
        // public void setup (Context context, FragmentManager manager, int
        // containerId)
        initView();

    }

    private void initView()
    {
        // 实例化布局对象
        layoutInflater = LayoutInflater.from(this);
        mTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);
        mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent); // 这里需要传人的是是Fragment对应的id,getSupportFragmentManager()的方法返回一个FragmentManager

        for (int i = 0; i < fragmentArray.length; 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);
        }
    }

    private View getTabItemView(int index)
    {

        // inflate 传人参数 为 tab的布局
        View view = layoutInflater.inflate(R.layout.tab_view, null);

        ImageView imageView = (ImageView) view.findViewById(R.id.imageview);
        imageView.setImageResource(mImageViewArray[index]);

        TextView textView = (TextView) view.findViewById(R.id.textview_tab);
        textView.setText(mTextviewArray[index]);

        return view;
    }

    protected void onDestroy()
    {
        super.onDestroy();

        // 把mTabHost赋值为null。
        mTabHost = null;
    }

}

package com.example.tabhost;

import com.example.thealarmclock.R;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class AlarmclockFragment extends Fragment
{
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    {

        return inflater.inflate(R.layout.fragment_alarmclock, null);
    }
}