出现异常。
FlutterError (setState() called after dispose(): _InfoWidgetState#cbf03(lifecycle state: defunct, not mounted)
This error happens if you call setState() on a State object for a widget that no longer appears in the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error can occur when code calls setState() from a timer or an animation callback.
The preferred solution is to cancel the timer or stop listening to the animation in the dispose() callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree.
This error might indicate a memory leak if setState() is being called because another object is retaining a reference to this State object after it has been removed from the tree. To avoid memory leaks, consider breaking the reference to this object during dispose().)
这个错误是因为当调用页面时，当前页面已经销毁了。可以通过查看堆栈信息。来判断页面调用的位置去排查问题。
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在这个位置中查看，也可以点击上一步按钮查看代码崩溃位置。
