问题
I'm posting a quick reference for "How can I show line numbers in Android Studio?" See answer below.
NOTE: This question has been marked as a duplicate because Android Studio is based on IntelliJ. In future, if you have a similar question, it's probably worth looking for the IntelliJ setting.
回答1:
In Windows
1.Press Ctrl+Shift+A
2.Input following string: "show line numbers"
And you will see the setting, this method can find all the settings easily!
MAC
1.Press Command+Shift+A
2.Input following string: "show line numbers"
and following same flow of android studio.
回答2:
It's simple. Just Right click in left side of Workspace area and choose Show line number.
回答3:
- Go to File > Settings
- In the dialog, select 'Editor', then the sub-option for 'General', and then the sub-option for 'Appearance'.
- Select 'Show line numbers' as shown below.
- Click Ok.
Source
UPDATE The location for this setting has been changed to Editor -> General -> Appearance.
来源：https://stackoverflow.com/questions/30056913/how-to-show-line-numbers-in-android-studio