Childfragment背景颜色（神奇地）改变了

TL;DR 在 ViewPager 中，我有一个带有两个子片段的 Fragment ，当我在一个子片段中更改列表的背景颜色时，它有时也会更改另一个子片段的背景颜色 .

所以，我有 ViewPager 有2个片段，片段1（ FragmentOne ）有2个子片段， FragmentOneA 和 FragmentOneB ，片段2是 FragmentTwo .

FragmentOneA 只是 Fragment 而 FragmentOneB 是 ListFragment .

在 FragmentOneB 中，我在奇数行和偶数行之间设置颜色 . 奇数行为黄色，偶数行为白色 .

所以在 ViewPager 中，我首先在 FragmentOne 中显示的片段是 FragmentOneA ，然后我按下 FragmentOneA 中的按钮用 FragmentOneB 替换该片段 .

This happened:

1）我按下了 FragmentOneA 中的按钮，将其替换为 FragmentOneB . 然后我按下Back按钮弹出堆栈 . 我做了几次 .

2）有时， FragmentOneA 中的背景颜色变为黄色 . 然后我又做了1），在某个时候，背景变回了白色 .

I just don't understand why this happened.

事件1）之前 FragmentOneA 的图像，白色背景：

单击该蓝色按钮"Cari penerbangan"后显示 FragmentOneB 的图像：

FragmentOneA 的图像在我做了几次事件之后几次：

The code of Activity that holds the ViewPager:

public class MyActivity extends ActionBarActivity {
    private static final int NUM_PAGES = 2;
    private ViewPager viewPager;
    private PagerAdapter adapter;
    private FragmentManager fragmentManager;

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

        fragmentManager = getSupportFragmentManager();

        adapter = new PagerAdapter(fragmentManager);
        viewPager = (ViewPager) findViewById(R.id.pager);
        viewPager.setAdapter(adapter);
    }

    @Override
    public void onBackPressed() {
        Fragment fragment = (Fragment) getSupportFragmentManager().findFragmentByTag("android:switcher:" + R.id.pager + ":"viewPager.getCurrentItem());

        if (fragment != null) { // could be null if not instantiated yet
            if (fragment.getView() != null) {
                // Pop the backstack on the ChildManager if there is any. If
                // not, close this activity as normal.
                if (!fragment.getChildFragmentManager().popBackStackImmediate()) {
                    finish();
                }
            }
        }
    }

    private class PagerAdapter extends FragmentPagerAdapter {

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

        @Override
        public Fragment getItem(int position) {
            switch (position) {
            case 0:
                FragmentOne d = new FragmentOne();
                return d;
            case 1:
                return new FragmentTwo();
            }
            return null;
        }

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

The code of FragmentOne:

public class FragmentOne extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    FrameLayout root = new FrameLayout(getActivity());
    root.setId(R.id.layout_root);

    FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
    transaction.add(R.id.layout_root, new FragmentOneA());
    transaction.commit();

    return root;
}

}

The code of FragmentOneA when the blue button get clicked:

FragmentTransaction transaction = getParentFragment().getChildFragmentManager().beginTransaction();
transaction.addToBackStack(null);
transaction.replace(R.id.layout_root, new FragmentOneB());
transaction.commit();

Long post, but I've reviewed my code many times, so if you know anything please give me some answers. Many thanks for you..

我的观点是，我只想使用奇偶行颜色，但不知何故影响了我的其他片段 .