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public class MyFragment extends Fragment {
    private static final String TAB_POSITION = "tab_position";

    public MyFragment() {

    }

    public static MyFragment newInstance(int tabPosition) {
        MyFragment fragment = new MyFragment();
        Bundle args = new Bundle();
        args.putInt(TAB_POSITION, tabPosition);
        fragment.setArguments(args);
        return fragment;
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        Bundle args = getArguments();
        int tabPosition = args.getInt(TAB_POSITION);
        TextView tv = new TextView(getActivity());
        tv.setGravity(Gravity.CENTER);
        tv.setText("Text in Tab #" + tabPosition);
        return tv;
    }
}

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //初始化ViewPager及其适配器
        MyPagerAdapter adapter = new MyPagerAdapter(getSupportFragmentManager());
        ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
        //将ViewPager与适配器关联
        viewPager.setAdapter(adapter);
        //TabLayout
        TabLayout tabLayout = (TabLayout) findViewById(R.id.tablayout);

        //将ViewPager与TabLayout关联
        tabLayout.setupWithViewPager(viewPager);

        //设置指示器的颜色
        tabLayout.setSelectedTabIndicatorColor(Color.GREEN);
    }

    static class MyPagerAdapter extends FragmentStatePagerAdapter {

        public MyPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            return MyFragment.newInstance(position);
        }

        @Override
        public int getCount() {
            return 3;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return "Tab " + position;
        }
    }
}