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);    }}