I use adb shell dumpsys activity <package_name>/<activityName> to dump the view hierarchy of the activity.
In the output, there is a section called View Hierarchy: and I can see the hierarchy tree. But I found difficulties to understand some part of the output. For example, a node in the tree is displayed like:
com.google.android.material.textview.MaterialTextView{d1de4b9 VFED..C.. ........ 0,0-288,196 #7f090074 app:id/article_menu_bookmark}
Some part of the information is easy to understand such as class name, id name, and view bounds, etc.
But what does VFED..C.. ........ mean? How to interpret those characters? I may guess V stands for visible, but this is what I guess. Can anyone points out some sources (e.g., Android source code) where I can find the meaning of those outputs?