For Windows/Linux, you can go to File
-> Settings
-> Editor
-> General
-> Auto Import
-> Java
and make the following changes:
On a Mac, do the same thing in Android Studio
-> Preferences
![enter image description here](https://i.stack.imgur.com/YCJ3Z.png)
After this, all unambiguous imports will be added automatically.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…