[bug]: crash on latest xcode project

[iPermanent]

最新xcode新建的项目里，appdelegate没有window了,内部代码依旧调用了appdelegate.window导致crash,swift项目，可以考虑改为scence来获取window

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Base Info for this issue

1. Version：Latest Version as here
2. Language of App ：Objective-C/Swift
3. iOS System Version：iOS12
4. Prototype（是否是真机）：YES
5. Issue Type：Crash、Bug、Enhancement（希望能支持一个新需求）、Q-A

1. How to reproduce the problem.

2. Please help me in this way.

3. Here is a Demo.

4. Here is my Debug log

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