android - FragmentManager : moveToState: Fragment state for GridFragment{. ..}未内联更新；预期状态1找到0

我有一个简单的Activity和Retained Fragment，就像Alex Lockwood blog post example一样。

我的 Activity 在onCreate()中是这样的:

FragmentManager fm = getSupportFragmentManager();
    retainedFragment = (GridFragment) fm.findFragmentByTag(RETAINED_FRAGMENT_TAG);

    // If the Fragment is non-null, then it is currently being
    // retained across a configuration change.
    if (retainedFragment == null) {
        retainedFragment = new GridFragment();
        fm.beginTransaction().add(retainedFragment, RETAINED_FRAGMENT_TAG).commit();
    }else{
        list = retainedFragment.getList();
        System.out.println(list.size());//OUTPUT 12
    }

我的Fragments'onAttach()是:

 @Override
public void onAttach(Context activity) {
    super.onAttach(activity);
    mCallbacks = (TaskCallbacks) activity;
    System.out.println("here"); //OUTPUT here
}

现在，在每次屏幕旋转时，我都会得到非常奇怪的输出:



在我的输入之间，奇怪的警告从何而来？怎么处理呢？提前致谢!

最佳答案

该消息无关紧要，多余的日志已在支持库v24.0.0中删除
这是官方开发人员answer: