How to get hosting Activity from a view?

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I just pulled that source code from the MediaRouter in the official support library and so far it works fine:

private Activity getActivity() {
    Context context = getContext();
    while (context instanceof ContextWrapper) {
        if (context instanceof Activity) {
            return (Activity)context;
        }
        context = ((ContextWrapper)context).getBaseContext();
    }
    return null;
}

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