机器人 - 如何获得视图的背景下？ [英] android - How to get view from context?

问题描述

我想从上下文的观点或findViewById（）？ 或意图是什么？

I want to get the view or findViewById() from Context? Or from intent?

我想在我的广播接收器达到特定的视图和的onReceive的参数是上下文和意图。

I'm trying to reach a specific view in my broadcast receiver and the parameter of onReceive are context and intent.

嗯，我有一个类，并在其中是我的广播接收器。现在，我试图广播接收机从中分离出来，但我需要一种方法，所以我仍然可以从我的分离广播接收器类上我的课的意见沟通。

Well, I have a class and within it is my broadcast receiver. Now, I'm trying to separate the broadcast receiver from it, but I need a way so I can still communicate with the views on my class from my separated broadcast receiver class.

感谢。

推荐答案

与上下文开始，相关活动的根视图可以通过

Starting with a context, the root view of the associated activity can be had by

View rootView = ((Activity)_context).Window.DecorView.FindViewById(Android.Resource.Id.Content);

在原始的Andr​​oid它会是这个样子：

In Raw Android it'd look something like:

View rootView = ((Activity)mContext).getWindow().getDecorView().findViewById(android.R.id.content)

然后，只需调用findViewById在此

Then simply call the findViewById on this

View v = rootView.findViewById(R.id.your_view_id);

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