问Actionbar.removealltabs()在制表符后面留下空格

EN

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    mViewPager = view.findViewById(R.id.reddit_search_pager);
    mActionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();

    setViewPager();
    setTabs();
}


public void setTabs() {
    mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

    ActionBar.TabListener tabListener = new ActionBar.TabListener() {
        @Override
        public void onTabSelected(ActionBar.Tab tab, android.support.v4.app.FragmentTransaction ft) {
            mViewPager.setCurrentItem(tab.getPosition());
        }

        @Override
        public void onTabUnselected(ActionBar.Tab tab, android.support.v4.app.FragmentTransaction ft) {

        }

        @Override
        public void onTabReselected(ActionBar.Tab tab, android.support.v4.app.FragmentTransaction ft) {

        }
    };
    for (int i = 0; i < 3; i++) {
        String tabTitle = "";
        switch (i) {
            case 0:
                tabTitle = TAB_TITLE_SUBREDDITS;
                break;
            case 1:
                tabTitle = TAB_TITLE_POSTS;
                break;
            case 2:
                tabTitle = TAB_TITLE_USERS;
                break;
        }
        mActionBar.addTab(
                mActionBar.newTab()
                    .setText(tabTitle)
                    .setTabListener(tabListener));
        }
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    NetworkingUtils myClass = new NetworkingUtils(this);

    ActionBar actionbar = getSupportActionBar();
    actionbar.setDisplayHomeAsUpEnabled(true);
    actionbar.setHomeAsUpIndicator(R.drawable.ic_action_menu);