在Activity中的选项卡布局刷新问题，可以尝试以下解决方法：

1. 使用Fragment来实现选项卡布局，通过调用Fragment的onResume()方法来刷新内容。示例代码如下：

public class MainActivity extends AppCompatActivity {

    private TabLayout tabLayout;
    private ViewPager viewPager;
    private ViewPagerAdapter adapter;
    private List fragments = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tabLayout = findViewById(R.id.tab_layout);
        viewPager = findViewById(R.id.view_pager);

        // 初始化Fragment
        fragments.add(new Fragment1());
        fragments.add(new Fragment2());
        fragments.add(new Fragment3());

        adapter = new ViewPagerAdapter(getSupportFragmentManager(), fragments);
        viewPager.setAdapter(adapter);
        tabLayout.setupWithViewPager(viewPager);
    }

    @Override
    protected void onResume() {
        super.onResume();

        // 在Activity的onResume方法中调用Fragment的onResume方法
        for (Fragment fragment : fragments) {
            fragment.onResume();
        }
    }

    // ViewPagerAdapter实现
    private class ViewPagerAdapter extends FragmentPagerAdapter {
        private List fragments;

        public ViewPagerAdapter(FragmentManager fm, List fragments) {
            super(fm);
            this.fragments = fragments;
        }

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

        @Override
        public int getCount() {
            return fragments.size();
        }

        @Override
        public CharSequence getPageTitle(int position) {
            // 返回选项卡的标题
            return "Tab " + (position + 1);
        }
    }
}

2. 在Fragment中使用setUserVisibleHint()方法来监听Fragment是否可见，并在可见时刷新内容。示例代码如下：

public class Fragment1 extends Fragment {

    private boolean isVisibleToUser = false;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        // 初始化布局
        View view = inflater.inflate(R.layout.fragment1, container, false);
        // ...
        return view;
    }

    @Override
    public void setUserVisibleHint(boolean isVisibleToUser) {
        super.setUserVisibleHint(isVisibleToUser);
        this.isVisibleToUser = isVisibleToUser;

        // 当Fragment可见时刷新内容
        if (isVisibleToUser) {
            refreshContent();
        }
    }

    private void refreshContent() {
        // 刷新内容的操作
    }
}

通过以上两种方法，可以解决Activity中的选项卡布局刷新问题。