我正在为 Web 应用程序制作活动图。现在需要决定按下按钮。但是，如果您之前按下了另一个按钮，则只能按下该按钮。但你不必推动它。所以我的问题是一个决策节点必须总是有两个或多个传出流，还是可以说这个决策只有一个传出流？
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The question is, whether something happens if the user does not push the button.
If nothing happens, then I would model the step as an activity not as a decision. If he has to press the button to continue, then it is the normal flow of the program and should be modeled as such.
于 2014-04-27T08:47:19.100 回答