[移动开发]TabLayout动态修改标题

public class DownloadFragment extends SimpleFragment{
    private static final String TAG = "DownloadFragment";
    private TabLayout tabLayout;
    private ViewPager mVpTaskList;
    private List<String> tableName;
    private PagerAdapter pagerAdapter;
    private TextView unclaimedTextView;


    public static DownloadFragment newInstance() {
        Bundle args = new Bundle();
        DownloadFragment fragment = new DownloadFragment();
        fragment.setArguments(args);
        return fragment;
    }


    @Override
    protected int getLayoutId() {
        return R.layout.task_fragment_download;
    }

    @Override
    protected void initView() {
        EventBusUtils.register(this);
        tabLayout = mView.findViewById(R.id.tabLayout);
        mVpTaskList = mView.findViewById(R.id.vp_task_list);
        unclaimedTextView=mView.findViewById(R.id.unclaimedTextView);
        final EditText etSearch = mView.findViewById(R.id.et_search_id);
        etSearch.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {
                EventBusUtils.postSticky(new EventMessage(EventCodeConstant.DOWN_LOAD_SEARCH,etSearch.getText().toString()));
            }
        });
        initPager();

    }

    private void initPager() {
        List<Fragment> fragments = new ArrayList<>();
        FragmentManager fm = getChildFragmentManager();
        DownloadPagerFragment toBeDownloaded = DownloadPagerFragment.newInstance(DownloadPagerFragment.TO_BE_DOWNLOADED);
        DownloadPagerFragment downloaded = DownloadPagerFragment.newInstance(DownloadPagerFragment.DOWNLOADED);
//        HaveDownloadedFragment downloaded=HaveDownloadedFragment.newInstance();
        fragments.add(toBeDownloaded);
        fragments.add(downloaded);
        tableName = new ArrayList<>();
        tableName.add("待复核");
        tableName.add("已复核");
        pagerAdapter = new PagerAdapter(fm,fragments,tableName);
        mVpTaskList.setAdapter(pagerAdapter);
        tabLayout.setupWithViewPager(mVpTaskList);

    }

    @Override
    protected void initData() {

    }

    @Override
    protected void initListener() {

    }

    /**
     * EventBus事件
     *
     * @param eventMessage
     */
    @Subscribe(threadMode = ThreadMode.MAIN)
    public void event(EventMessage eventMessage) {
        if (eventMessage.getCode()== EventCodeConstant.UPADTE_DOWN_NUMBER){
            List<Integer> contList = (List<Integer>) eventMessage.getData();
            if(contList != null){
                for (int i = 0; i < contList.size(); i++) {
                    int count = contList.get(i);
                    String title = tableName.get(i).substring(0, 3);
                    pagerAdapter.setPageTitle(i,  title + "(" + count + ")");
                }
                pagerAdapter.notifyDataSetChanged();
            }
        }
    }

    @Override
    public void onDestroy() {
        EventBusUtils.unregister(this);
        super.onDestroy();
    }
}

public class PagerAdapter extends FragmentPagerAdapter {
    private List<Fragment> mFragments;
    private List<String> mTitles;

    public PagerAdapter(FragmentManager fm, List<Fragment> fragments, List<String> mTitles) {
        super(fm);
        this.mFragments = fragments;
        this.mTitles = mTitles;
    }

    @Override
    public Fragment getItem(int i) {
        return mFragments.get(i);
    }

    @Override
    public int getCount() {
        return mFragments == null ? 0 : mFragments.size();
    }

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

    /**
     * 动态设置标题
     * @param position
     * @param title
     */
    public void setPageTitle(int position, String title)
    {
        if(position >= 0 && position < mTitles.size())
        {
            mTitles.set(position, title);
            notifyDataSetChanged();
        }
    }


}