由BackgroundManager引起的onSaveInstanceState之后无法执行此操作

Question

我收到错误消息“ onSaveInstanceState之后无法执行此操作”。我知道简单的修复方法是使用commitAllowingStateLoss，但就我而言，背景管理器正在创建此Fragment。如何避免此错误？

android.app.BackStackRecord.commitInternal(BackStackRecord.java:707)
   at android.app.BackStackRecord.commit(BackStackRecord.java:671)       at android.support.v17.leanback.app.BackgroundManager.createFragment(BackgroundManager.java:596)
   at android.support.v17.leanback.app.BackgroundManager.<init>(BackgroundManager.java:587)

在onCreate（）方法中，我调用prepareBackgroundManager（）。

private void prepareBackgroundManager() {
    if (!requireActivity().isFinishing()) {
        mBackgroundManager = BackgroundManager.getInstance(requireActivity());

        if (mBackgroundManager != null && !mBackgroundManager.isAttached()) {
            mBackgroundManager.attach(requireActivity().getWindow());
        }
    }
}