Android 子片段'；使用Support lib v4 rev20时未调用s onCreateView（）

我对手机的看法如下：

MainActivity

包含

PaymentsFragment

，其中包含一个

FragmentPagerAdapter

，而后者又包含2个

TransactionListFragments

PaymentFragment

示例代码：

  @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setRetainInstance(true);


        mPaymentsPagerAdapter = new PaymentsPagerAdapter(getActivity(), getChildFragmentManager(), this);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState)
    {
        View view = inflater.inflate(R.layout.fragment_payments, container, false);
        assert view != null;


        if (!isFirstRun)
            mPaymentsPagerAdapter.setOnTransactionClickListener(this);
        else
            isFirstRun = false;
        ViewPager viewPager = (ViewPager) view.findViewById(R.id.fragment_payments_viewpager);
        viewPager.setAdapter(mPaymentsPagerAdapter);
        PagerSlidingTabStrip pagerSlidingTabStrip = (PagerSlidingTabStrip) view.findViewById(R.id.fragment_payments_tabstrip);
        pagerSlidingTabStrip.setViewPager(viewPager);


        return view;
    }

  @Override
    public Fragment getItem(int position)
    {
        switch (position)
        {
            case 0:
                TransactionsListFragment recurringPaymentsListFragment = TransactionsListFragment.newRecurringPaymentsInstance();
                recurringPaymentsListFragment.setOnTransactionClickListener(mPaymentsFragment);
                return recurringPaymentsListFragment;

            case 1:
                TransactionsListFragment paymentsListFragment = TransactionsListFragment.newPaymentsInstance();
                paymentsListFragment.setOnTransactionClickListener(mPaymentsFragment);
                return paymentsListFragment;
        }
        return null;
    }

PaymentsPagerAdapter

示例代码：

  @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setRetainInstance(true);


        mPaymentsPagerAdapter = new PaymentsPagerAdapter(getActivity(), getChildFragmentManager(), this);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState)
    {
        View view = inflater.inflate(R.layout.fragment_payments, container, false);
        assert view != null;


        if (!isFirstRun)
            mPaymentsPagerAdapter.setOnTransactionClickListener(this);
        else
            isFirstRun = false;
        ViewPager viewPager = (ViewPager) view.findViewById(R.id.fragment_payments_viewpager);
        viewPager.setAdapter(mPaymentsPagerAdapter);
        PagerSlidingTabStrip pagerSlidingTabStrip = (PagerSlidingTabStrip) view.findViewById(R.id.fragment_payments_tabstrip);
        pagerSlidingTabStrip.setViewPager(viewPager);


        return view;
    }

  @Override
    public Fragment getItem(int position)
    {
        switch (position)
        {
            case 0:
                TransactionsListFragment recurringPaymentsListFragment = TransactionsListFragment.newRecurringPaymentsInstance();
                recurringPaymentsListFragment.setOnTransactionClickListener(mPaymentsFragment);
                return recurringPaymentsListFragment;

            case 1:
                TransactionsListFragment paymentsListFragment = TransactionsListFragment.newPaymentsInstance();
                paymentsListFragment.setOnTransactionClickListener(mPaymentsFragment);
                return paymentsListFragment;
        }
        return null;
    }

在

TransactionListFragment

内部，没有发生什么事情。此外，它的onCreate（）和onCreateView（）都没有被调用，所以我认为

PaymentsFragment

或

PaymentsPayGeradapter

中都有错误

---

问题是，在升级到支持v4 lib rev20之前，所有的代码都工作正常。我降级到rev19，它又开始工作了。那么，关于是什么导致rev 20失败的想法，或者是一个bug？另外，如果有的话，解决方法是什么？

显然，支持库中的

setRetainInstance（）

方法发生了一些变化，从v20开始，继续到v21，再加上Android 5.0

当我从父片段中删除

setRetainInstance（true）

后，它就开始工作了