Create one library containing the class(es) that access your centralized XML settings, and reference that library from the other libraries.
You don't necessarily need a Singleton for this, but putting it in one place will allow you to focus your efforts on things to improve it later, possibly caching, etc.
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创建一个包含访问集中式 XML 设置的类的库，并从其他库引用该库。
为此，您不一定需要单例，但将其放在一个地方将使您能够将精力集中在以后改进它的事情上，可能是缓存等。
Create one library containing the class(es) that access your centralized XML settings, and reference that library from the other libraries.
You don't necessarily need a Singleton for this, but putting it in one place will allow you to focus your efforts on things to improve it later, possibly caching, etc.