1.字体大小
Settings-Editor-Colors & Fonts-Font下
2.自动导包
Settings-Editor-General-Auto Import选项下
3.显示行数
Settings-Editor-General-Appearance-show line numbers
4.快捷键
Setting-keymap
5.代码自动提示
Settings-Editor-General,把show quick doc on mouse move勾上
6.不区分大小写
Settings-Editor-General-Code Completion中，Case sensitive completion选择none就可以了
7.取消载入
Systems-System Settings下，把Reopen last project startup的勾去掉