android FragmentTabhost導航分頁

基本模板

public class MainActivity extends FragmentActivity {
    
    private FragmentTabHost mTabHost;
    private LayoutInflater mLayoutInflater;

    private Class mFragmentArray[] = { Fragment1.class, Fragment2.class,
            Fragment3.class, Fragment4.class, Fragment5.class };

    private int mImageArray[] = { 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 };

    private String mTextArray[] = { "首頁", "消息", "好友", "搜索", "更多" };

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }

    private void initView() {

        mLayoutInflater = LayoutInflater.from(this);

        // 找到TabHost
        mTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);
        mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
　　　　 mTabHost.getTabWidget().setDividerDrawable(null);//去除分割線
        // 得到fragment的個數
        for (int i = 0; i < mFragmentArray.length; i++) {
            // 給每個Tab按鈕設置圖標、文字和內容
            TabSpec tabSpec = mTabHost.newTabSpec(mTextArray[i])
                    .setIndicator(getTabItemView(i));
            // 將Tab按鈕添加進Tab選項卡中
            mTabHost.addTab(tabSpec, mFragmentArray[i], null);
            // 設置Tab按鈕的背景
            mTabHost.getTabWidget().getChildAt(i)
                    .setBackgroundResource(R.drawable.selector_tab_background);
        }
    }

    //給每個Tab按鈕設置圖標和文字
    private View getTabItemView(int index) {
        View view = mLayoutInflater.inflate(R.layout.tab_item_view, null);
        ImageView imageView = view.findViewById(R.id.imageview);
        //設置圖片選擇器，選中的tab改變圖標
        switch (index){
            case 0:imageView.setImageResource(R.drawable.main_bottom_image_selector);break;
            case 1:imageView.setImageResource(R.drawable.main_bottom_image_selector2);break;
            case 2:imageView.setImageResource(R.drawable.main_bottom_image_selector3);break;
            case 3:imageView.setImageResource(R.drawable.main_bottom_image_selector4);break;
            case 4:imageView.setImageResource(R.drawable.main_bottom_image_selector5);break;
        }
        TextView textView = view.findViewById(R.id.textview);
        textView.setText(mTextArray[index]);
        //設置文本選擇器，選中的tab文字高亮
        textView.setTextColor(R.drawable.main_bottom_text_selector);
        return view;
    }

}

acitivity_main.xml

<?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" //必須使用提供的id
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" 
    android:background="@drawable/bg_tabhost_bg">

    <FrameLayout
      android:id="@android:id/tabcontent" //必須使用提供的id
      android:layout_width="0dp"
      android:layout_height="0dp"
      android:layout_weight="0" />            
  </android.support.v4.app.FragmentTabHost>

</LinearLayout>

tab_item_view.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:orientation="vertical">
    <ImageView
        android:id="@+id/imageview"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_margin="3dp"
        />
    <TextView
        android:id="@+id/textview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="1dp"
        android:textSize="12sp"
        android:layout_marginBottom="2dp"/>
</LinearLayout>

main_bottom_image_selector圖片選擇器

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="false" android:drawable="@drawable/ic_launcher" />
    <item android:state_selected="true" android:drawable="@drawable/ic_launcher_round" />
</selector>

註：模板有5個tab，需要5個圖片選擇器，還需要5個文本選擇器，還需要創建5個fragment。