Android 操作栏选项卡指示器卡在选项卡之间

我已经按照以下指南实现了ActionBar选项卡：。但是，我有一个标签指示器卡在第二个和第三个标签之间的问题。有4个选项卡，但仅显示3个。看起来像这样：

只有当我从第三个标签滑到第二个标签时。它只是停留在那里，如果我再次向左滑动，它将进入第二个选项卡。所以它基本上只是感觉有4个标签

My FragmentPagerAdapter Class looks like this

    public class SampleFragmentPagerAdapter extends FragmentPagerAdapter {
    final int PAGE_COUNT = 3;
    private static Context context;
    private String tabTitles[];

    public SampleFragmentPagerAdapter(FragmentManager fm, Context context) {
    super(fm);
        this.context = context;
        Resources resources = context.getResources();
        tabTitles = new String[] { resources.getString(R.string.recent),
            resources.getString(R.string.popular),
            resources.getString(R.string.my) };
    }

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

    @Override
    public Fragment getItem(int position) {
        switch (position) {
        case 0:
            return new RecentFragment();

        case 1:
            return new PopularFragment();

        case 2:
            return new MyFragment();

        }
        return null;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        // Generate title based on item position
        return tabTitles[position];
    }

    public static class RecentFragment extends Fragment implements OnItemClickListener {

        ListView listView;
        List<RowItem> rowItems;

        public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.custom_list, container, false);
            String[] titles = { "titleA", "titleB", "titleC" };
            String[] descriptions = { "a", "b", "c" };
            Integer[] images = { R.drawable.christoffer, R.drawable.frede, R.drawable.sofie };

            rowItems = new ArrayList<RowItem>();
            for (int i = 0; i < titles.length; i++) {
                RowItem item = new RowItem(images[i], titles[i], descriptions[i]);
                rowItems.add(item);
            }

            listView = (ListView) rootView.findViewById(R.id.list);
            CustomListViewAdapter adapter = new CustomListViewAdapter(context,
                    R.layout.list_item, rowItems);
            listView.setAdapter(adapter);
            listView.setOnItemClickListener(this);

            return rootView;
        }

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {
            // TODO Auto-generated method stub

    }

    }

    public static class PopularFragment extends Fragment {

    }

    public static class MyFragment extends Fragment {

    }

}

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请通过java文件将片段XML加载到所有选项卡中，它将解决..

尝试返回新片段；而不是返回null；在您的getItem方法中-只是一个猜测！如果您对行slidengtablayout.setDistributeEvenlytrue进行注释；然后发生了什么？我首先在开发时返回了新的片段，正如天网猜测的那样，并提出了相同的问题，然后我发现了这个问题。最后，在onCreateView中返回一个非空视图，这节省了我的时间。这意味着如果我继续编码，那么bug就会消失，但我在上面浪费了很多时间…

ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
viewPager.setAdapter(new SampleFragmentPagerAdapter(
            getSupportFragmentManager(), MainActivity.this));

// Give the SlidingTabLayout the ViewPager
SlidingTabLayout slidingTabLayout = (SlidingTabLayout) findViewById(R.id.sliding_tabs);
// Center the tabs in the layout
slidingTabLayout.setDistributeEvenly(true);
slidingTabLayout.setViewPager(viewPager);
// Customize tab color
slidingTabLayout
        .setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
            @Override
            public int getIndicatorColor(int position) {
                return Color.RED;
            }
        });