在 Flex 中，我如何知道动态对象的属性何时发生变化？
我有一个动态类，用作配置设置的存储容器。 设置是该类的变量，它具有读取和写入配置文件、数据库等的方法。现在我想在类变量发生更改时触发写入持久存储。 由于变量是在运行时动态添加的，因此我无法使用 get/set 方法，而且，如果可以的话，这将导致大量的样板代码。
如何触发事件来更改我的类的属性？
I have a dynamic class that serves as a storage container for configuration settings. The settings are variables of that class and it has methods to read from and write to a configuration file, database etc. Now I want to trigger writing to the persistant storage whenever a class variable is changed. As the variables are added dynamically at runtime, I can't use get/set methods, also, if I could, that would lead to a lot of boilerplate code.
How can I have an event triggered for changing properties of my class?
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您可以从
mx.utils 继承此类.代理。 它允许您使对象是动态的，但仍然能够编写一些在访问属性时运行的自定义代码（类似于 getter 和 setter - 请参阅getProperty()和setProperty()。）You can subclass this class of yours from
mx.utils.Proxy. It allows you to have the object be dynamic yet still be able to write some custom code that runs whenever properties are accessed (similarly to getters and setters -- seegetProperty()andsetProperty().)我会考虑避免使用动态对象，而是使用一种存储方法和一种检索数据的方法创建数据存储类（SettingsModel？）。 因此，不要使用：
...您可以编写：
您可以将命名设置存储在字典内部，并在
store()方法中执行任何需要完成的操作。这里的主要优点是可读性：当您看到一个方法被调用时，您就知道它背后有功能。 出于同样的原因，我倾向于不喜欢 getter/setter 函数。
最后，这是一个品味问题，所以如果你的代码没有被破坏，为什么要修复它呢。 :)
I would consider avoiding the dynamic object, and rather create the data storage class (SettingsModel?) with one method for storing and one method for retrieving data. So instead of using:
...you would write:
You could store the named settings internally in a Dictionary, and do whatever magic needs to be done in the
store()method.The main advantage here is readability: when you see a method being called, you know there's functionality behind it. For the same reason I tend to dislike getter/setter functions.
In the end it is a matter of taste, so if your code isn't broken, why fix it. :)