在我的code我在活动中被禁用按钮A 我可以启用的活动'A'从活动'B'？

In my code I have a disabled button in the activity 'A' Can I enable that button on the activity 'A' from an activity 'B'?

感谢。

推荐答案

通常情况下，你不能。

如果您是从b活动调用活动A，那么你可以通过是否启用通过意向的按钮的信息。

If you are invoking activity A from activity B, then you can pass information on whether to enable the button via the intent.

如果A调用B和你需要做一些事情回来与 startActivityForResult 根据B中用户的操作，那么你可以调用B和从B分别发送结果回至A;那么基于什么B已传回的 onActivityResult 的活动为您的，您可以启用/禁用按钮。

If A invoked B and you need to do something back in A based on user's actions in B, then you can invoke B with startActivityForResult and send the result back from B to A; then in onActivityResult of your activity A you can enable/disable the button based on what B has passed back.