是否总是安全投上下文到活动中查看 [英] Is it always safe to cast Context to Activity within View

问题描述

五月我知道，它是安全的，我总是投上下文到活动 A <$ C $内C>查看？

May I know, is it safe for me to always cast Context to Activity within a View?

View {
    Activity activity = (Activity)this.getContext();
}

到目前为止，它工作正常所有的时刻。我想知道，是否有任何优势的情况下，上述code会失败？

So far, it works fine all the moment. I was wondering, is there any edge cases that the above code will fail?

推荐答案

虽然我不认为这样的情况下，我想是不是有两个原因这样一个伟大的想法：

While I can't think of such case, I think it is not such a great idea for two reasons:

1. 为什么你要做到这一点，当你明确需要的活动？
2. 如果明天这将改变，还会有其他的上下文查看？

1. Why would you want to do that, when do you explicitly need Activity?
2. What if tomorrow this will be changed, and there will be other context for View?

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