Dialog will dismiss after rotating screen (Api23Impl)

[fython]

Dialog cannot keep its state after rotating screen. Most of time, we use DialogFragment to solve this problem. But it will break original-like API style (Need developers to add Fragment to FragmentManager by themselves.).

I have implemented a simple version of DialogFragment for BiometricPromptApi23Impl which is still undocumented: AbstractBiometricPromptDialogFragment. I think I should make it easier to use before releasing it.

If you have any idea, welcome to comment here.

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中文：

Dialog 不能在旋转屏幕后保持它的状态。大多时候我们会使用 DialogFragment 来解决这个问题，但它会破坏类原生接口的风格（需要开发者自行将 Fragment 加入 FragmentManager）。

我已经为 BiometricPromptApi23Impl 实现了一个未记入文档的简单版本 Fragment ——AbstractBiometricPromptDialogFragment。我想我应该让它更易于使用再发布。

如果你有任何点子，欢迎在此发表评论。