我如何从不同类别中使用的主动行为获得上下文，而无需传递

发布于 2025-02-07 18:27:13 字数 562 浏览 1 评论 0原文

我有一个定制班级列表和一个函数，可以在他们自己的kotlin文件中返回此列表。该函数仅是从MainActivity调用的，但是由于它不在同一文件中，因此在构建列表时无法通过上下文。

在自定义类定义中，我想在共享的偏好中访问变量，但是要这样做，我需要一个上下文，这将是MARATIVITY。因此，我的问题是如何从其他地方获取主要活性上下文，还是有另一种访问共享偏好的方法？

自定义类包含：

open class ListItems(
    open val title: String,
    ...
)

class GameName(
    override val title: String,
    ...
) : ListItems(title, active) {
    init {
        val context: Context = MainActivity::class
        val savedData = context.getSharedPreferences("CompletedGames", Context.MODE_PRIVATE)
        ...
    }
}

原文

I have a list of CustomClass and a function which returns this list in their own kotlin file. The function is only ever called from MainActivity but since it is not in the same file I cannot pass context when building the list.

In the custom class definition I want to access a variable in shared preferences, but to do this I need a context, which would be MainActivity. So my question is how do I grab MainActivities context from elsewhere, or is there another way to access shared preferences?

The custom class contains:

open class ListItems(
    open val title: String,
    ...
)

class GameName(
    override val title: String,
    ...
) : ListItems(title, active) {
    init {
        val context: Context = MainActivity::class
        val savedData = context.getSharedPreferences("CompletedGames", Context.MODE_PRIVATE)
        ...
    }
}

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