Tablayout显示导航栏

1.首先，只要在build.gradle中加入compile ‘com.android.support:design:22.2.0’即可。

2.布局文件

<android.support.design.widget.TabLayout
    android:id="@+id/tablayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:tabMode="scrollable"<!-- 加上这句话,代表tab数量大于屏幕宽度时，能实现水平滚动-->
    tabIndicatorColor="@android:color/transparent"
    >

<android.support.v4.view.ViewPager
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1"
    android:id="@+id/pager"></android.support.v4.view.ViewPager>

3.activity界面代码

//存放数据的集合（网络请求的数据）,也就是请求接口返回的导航栏的信息装到集合中
 private  List<String> li=new ArrayList<>();
 //存放fragment的集合
 private List<Fragment> fragments = new ArrayList<Fragment();
    //初始化view
    private void initView() {
        pager = (ViewPager) getView().findViewById(R.id.pager);
        tablayout = (TabLayout)     getView().findViewById(R.id.tablayout);
    }
  //通过接口回调得到网络请求的数据
    @Override
    public void callBackhome(Object o) {
        newsBean news= (newsBean) o;
        for (int i = 0; i < news.getResult().getDate().size(); i++) {
         //遍历集合拿到title
            li.add(news.getResult().getDate().get(i).getTitle());
              //循环创建fragment
            MyFragment frag=new MyFragment(news.getResult().getDate().get(i).getUri());
            fragments.add(frag);
        }

        FragmentAdapter adapter=new FragmentAdapter(fragments,li,getActivity().getSupportFragmentMan  ager());
        pager.setAdapter(adapter);       
   //关联     
   tablayout.setupWithViewPager(pager);
   tablayout.setTabTextColors(Color.BLACK,Color.RED);  
   }

适配器

 public class FragmentAdapter extends FragmentPagerAdapter { 
     private List<String> list=new ArrayList<>();   
     private List<Fragment> fragments;  

     public FragmentAdapter(List<Fragment> fragments,List<String> list, FragmentManager fm) {      
     super(fm);      
     this.fragments = fragments;   
     this.list=list;  
  }   
  @Override   
   public Fragment getItem(int position) {      
   return fragments.get(position);    
}
    @Override    

   public int getCount() {    

    return list.size();   
 } 

   @Override 
   public CharSequence getPageTitle(int position) { 
       return list.get(position);   
 }
}