Androiddesign包自定义tablayout的底部导航栏的实现方法

public class MainActivity extends BaseActivity implements TabLayout.OnTabSelectedListener{
  @BindView(R.id.main_container)
  LinearLayout mainContainer;
  @BindView(R.id.nav_tl)
  TabLayout navTl;
  //Tab 文字
  private final int[] TAB_TITLES = new int[]{R.string.nav_home,R.string.nav_order,R.string.nav_my};
  //Tab 图片
  private final int[] TAB_IMGS = new int[]{R.drawable.nav_home_bg,R.drawable.nav_order_bg,R.drawable.nav_my_bg};
//贴出一个R.drawable.nav_home_bg的文件,其他类似:`<&＃63;xml version="1.0" encoding="utf-8"&＃63;>

  
  
`
  private FirstPagerFragment firstPagerFragment;
  private PersonalFragment personalFragment;
  private SeekOrderFragment seekOrderFragment;
  private android.support.v4.app.FragmentManager manager;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ButterKnife.bind(this);
    iniView();
    iniData();
  }
  private void iniData() {
  }
  private void iniView() {
    LayoutInflater inflater = LayoutInflater.from(this);
    manager = getSupportFragmentManager();
    getTab(R.id.main_container,manager,0);
    setTabs(navTl,inflater,TAB_TITLES,TAB_IMGS);
    navTl.setOnTabSelectedListener(this);
  }
  /**
   * @description: 设置添加Tab
   * 我们自定义的布局customer_layout其实就是一张图片加文字
   * `<&＃63;xml version="1.0" encoding="utf-8"&＃63;>

  
  
`
   */
  private void setTabs(TabLayout tabLayout, LayoutInflater inflater, int[] tabTitlees, int[] tabImgs) {
    for (int i = 0; i