Android TabLayout实现顶部滑动效果(多个页面)

            public
            class MyFragment1 extends Fragment {
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view=inflater.inflate(R.layout.layout_page1,container,false);
        return view;
    }

            public
            class MainActivity extends AppCompatActivity {
    TabLayout tabLayout;
    ViewPager viewPager;
    List<Fragment> fragments; //定义一个列表集合(应用泛型)
    String[] table={"新闻","财经","娱乐"};  //定义一个数组存放标题内容
    @Override
    protectedvoid onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tabLayout=findViewById(R.id.tablayout);
        viewPager=findViewById(R.id.viewpager);
        fragments=new ArrayList<>();  //实例化集合
        fragments.add(new MyFragment1());
        fragments.add(new MyFragment2());
        fragments.add(new MyFragment3());

        Adapter adapter=new Adapter(getSupportFragmentManager(),fragments); //参数1为fragment管理器
        viewPager.setAdapter(adapter); //给viewPager设置适配器
        tabLayout.setupWithViewPager(viewPager); //将tabLayout与viewPager建立匹配    }

    //创建一个内部类作为适配器publicclass Adapter extends FragmentPagerAdapter{
        private List<Fragment> list;
        public Adapter(FragmentManager fm,List<Fragment> list) {
            super(fm);
            this.list=list;
        }

        @Override
        public Fragment getItem(int position) {
            return list.get(position);
        }

        @Override
        publicint getCount() {
            return list.size();
        }

        //重写getPageTitle()方法，获取页标题        @Nullable
        @Override
        public CharSequence getPageTitle(int position) {
            return table[position];
        }
    }
}