问题描述
我正在学习android开发和导航组件，尝试将多个活动链接为文档已经写好了.但是，似乎不可能在两个活动之间为单个导航图创建动作，而这对我来说是合理的，正如文档所写.
I'm learning android development and the navigation component, trying to link multiple activities as the document had written. But it seems like it's impossible to create action between two activities to a single navigation graph which was reasonable to me as the document had written.
所以问题是以下句子是什么意思?我可以将多个活动添加到一个导航图，但不能在它们之间添加链接(动作).
So the question is what does the following sentence mean? I could add multiple activities to one navigation graph but couldn't add a link(action) between them.
推荐答案
由于每个NavController和导航图都包含在单个活动中，因此<activity>目标是该图的出口点-一旦使用navigate(R.id.your_activity_destination)即可转到下一个活动，即NavController和图形不再处于活动状态(它位于后堆栈上的活动上，而不是新启动的活动上.)
Since each NavController and navigation graph is contained within a single activity, an <activity> destination is an exit point from that graph - once you use navigate(R.id.your_activity_destination) to go to the next activity, that NavController and graph is no longer active (it is on the activity on the back stack, not the newly launched activity).
在第二个活动中，您将具有另一个导航图，其中包含任何其他<activity>出站目的地，可用于进一步的活动.
On your second Activity, you would have a second navigation graph with any additional <activity> outbound destinations to go to further activities.
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