Android Studio显示行号
File-->Setting(Ctrl+Alt+S),选择Editor-->General-->Appearance,右侧勾选Show line numbers
设置鼠标悬停显示文档提示
1.File->Setting->Editor -> General ->Other -> 勾选 Show quick documentation on mouse move
2.Ctrl+Q 快捷键(按下此快捷键可显示文档提示)
Android Studio显示行号
File-->Setting(Ctrl+Alt+S),选择Editor-->General-->Appearance,右侧勾选Show line numbers
设置鼠标悬停显示文档提示
1.File->Setting->Editor -> General ->Other -> 勾选 Show quick documentation on mouse move
2.Ctrl+Q 快捷键(按下此快捷键可显示文档提示)