问题
I don't know what I did... But that's the only file that have like a Pin Icon. What does it mean, and how can I remove it? Thanks!
回答1:
That java file class has a Pin because that class is a final class
May be you have declared that class as a final class :)
To learn more about: Android studio symbols
回答2:
what is that ?
It is because you have declared that class as final class due to that it is showing that pin icon.
How to remove pin icon ?
If you remove final keyword than that icon will be removed.
Check out description of symbols used in android studio
来源：https://stackoverflow.com/questions/46417821/little-pin-icon-on-java-class-android-studio