android FragmentTabhost实现导航分页

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[] = { "首页", "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);//去除分割线    // 得到fragment的个数    for (int i = 0; i < mFragmentArray.length; i++) {      // 给每个Tab按钮设置图标、文字和内容      TabSpec tabSpec = mTabHost.newTabSpec(mTextArray[i])          .setIndicator(getTabItemView(i));      // 将Tab按钮添加进Tab选项卡中      mTabHost.addTab(tabSpec, mFragmentArray[i], null);      // 设置Tab按钮的背景      mTabHost.getTabWidget().getChildAt(i)          .setBackgroundResource(R.drawable.selector_tab_background);    }  }  //给每个Tab按钮设置图标和文字  private View getTabItemView(int index) {    View view = mLayoutInflater.inflate(R.layout.tab_item_view, null);    ImageView imageView = view.findViewById(R.id.imageview);    //设置图片选择器，选中的tab改变图标    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]);    //设置文本选择器，选中的tab文字高亮    textView.setTextColor(R.drawable.main_bottom_text_selector);    return view;  }}

<?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" //必须使用提供的id  android:layout_width="fill_parent"  android:layout_height="wrap_content"   android:background="@drawable/bg_tabhost_bg">  <FrameLayout   android:id="@android:id/tabcontent" //必须使用提供的id   android:layout_width="0dp"   android:layout_height="0dp"   android:layout_weight="0" />       </android.support.v4.app.FragmentTabHost></LinearLayout>

<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>

<?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>