问题
I am tired of searching to get what I want like this in the below image.
Combo box sample in a website
Yes. I need a Spinner with sub categories as you are seeing in this image. (Ex Short, Medium, Long)
I don't wanna use any separate layout to do this. Please help me to get this.
来源：https://stackoverflow.com/questions/20243498/adding-sub-categories-in-spinner-in-android