android选项卡

public class MainActivity extends AppCompatActivity {
    // 定义FragmentTabHost对象
    private FragmentTabHost mTabHost;

    // 定义数组来存放Fragment界面
    private Class<?> mFragmentArray[] = {
            RecordFragment.newInstance(0).getClass(),
            InteractFragment.newInstance(1).getClass(),
            RemindFragment.newInstance(2).getClass(),
            MyFragment.newInstance(3).getClass()};

    //定义数组来存放按钮图片
    private int mImageViewArray[] = {
            R.drawable.selector_tab_home,
            R.drawable.selector_tab_square,
            R.drawable.selector_tab_mine,
            R.drawable.selector_tab_my};

    //Tab选项卡的文字
    private String mTextViewArray[] = {"记录", "互动", "提醒", "我的"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//        initVariables();
        bindView(savedInstanceState);
        initData();
        initExit();
    }

//    @Override
//    protected void initVariables() {
//
//    }

//    private DoubleClickExitDetector mClickExitDetector;  //双击返回监听
//    @Override
//    public void onBackPressed() {
//        if (mClickExitDetector.onClick()) {  //退出程序
//            System.exit(0);
//
//            finish();
//        }
//    }



//    @Override
    protected void bindView(Bundle savedInstanceState) {
        setContentView(R.layout.activity_main);

        mTabHost = (FragmentTabHost) findViewById(R.id.tab_host_app_main);
        mTabHost.setup(this, getSupportFragmentManager(), R.id.fl_app_main_content);

        //得到fragment个数
        int count = mFragmentArray.length;
        for (int i = 0; i < count; i++) {
            //为每个Tab按钮设置图标、文字以及内容
            TabHost.TabSpec tabSpec = mTabHost.newTabSpec(mTextViewArray[i]).setIndicator(getTabItemView(i));
            // 将Tab按钮添加进Tab选项卡中
            mTabHost.addTab(tabSpec, mFragmentArray[i], null);
            //去分隔线
            mTabHost.getTabWidget().setDividerDrawable(null);
        }
    }

//    @Override
    protected void initData() {

    }

    /**
     * 初始化变量
     */
    private void initVar() {

    }

    /**
     * 给Tab按钮设置图标和文字
     */
    private View getTabItemView(int index) {
        View view = getLayoutInflater().inflate(R.layout.tab_item_view, null);
        ImageView imageView = (ImageView) view.findViewById(R.id.iv_tab_icon);
        imageView.setImageResource(mImageViewArray[index]);
        TextView textView = (TextView) view.findViewById(R.id.tv_tab_text);
        textView.setText(mTextViewArray[index]);
        return view;
    }

    /**
     * 初始化双击返回的类
     */
    private void initExit() {
//        mClickExitDetector = new DoubleClickExitDetector(this);
    }
}
activity_main
<?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">

    <!--该FrameLayout布局用来显示fragment-->
    <FrameLayout
        android:id="@+id/fl_app_main_content"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1">
    </FrameLayout>

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="@color/gray_line_bg"/>

    <!--这个FragmentTabHost用于显示下方的功能标签 -->
    <android.support.v4.app.FragmentTabHost
        android:id="@+id/tab_host_app_main"
        android:layout_width="match_parent"
        android:layout_height="56dp"
        android:background="#FFFFFF"/>

</LinearLayout>


RecordFragment（其中一个）
public class RecordFragment extends Fragment {
    protected static String ARGUMENT_NUM = "num";
    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;

    private OnFragmentInteractionListener mListener;

    public RecordFragment() {
        // Required empty public constructor
    }

    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *

     * @return A new instance of fragment RecordFragment.
     */
    // TODO: Rename and change types and number of parameters
    public static RecordFragment newInstance(int num) {

        RecordFragment f = new RecordFragment();
        Bundle args = new Bundle();
        args.putInt(ARGUMENT_NUM, num);
        f.setArguments(args);
        return f;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null) {
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_record, container, false);
    }

    // TODO: Rename method, update argument and hook method into UI event
    public void onButtonPressed(Uri uri) {
        if (mListener != null) {
            mListener.onFragmentInteraction(uri);
        }
    }

//    @Override
//    public void onAttach(Context context) {
//        super.onAttach(context);
//        if (context instanceof OnFragmentInteractionListener) {
//            mListener = (OnFragmentInteractionListener) context;
//        } else {
//            throw new RuntimeException(context.toString()
//                    + " must implement OnFragmentInteractionListener");
//        }
//    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }

    /**
     * This interface must be implemented by activities that contain this
     * fragment to allow an interaction in this fragment to be communicated
     * to the activity and potentially other fragments contained in that
     * activity.
     * <p/>
     * See the Android Training lesson <a href=
     * "http://developer.android.com/training/basics/fragments/communicating.html"
     * >Communicating with Other Fragments</a> for more information.
     */
    public interface OnFragmentInteractionListener {
        // TODO: Update argument type and name
        void onFragmentInteraction(Uri uri);
    }
}
fragment_record
<FrameLayout 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"
    tools:context="yhb.com.test.RecordFragment">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="@string/hello_blank_fragment" />

</FrameLayout>



selector_tab_home按下选项卡变化效果
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/jilu_icon" android:state_selected="true"/>
    <item android:drawable="@drawable/jilu_icon2"/>
</selector>