android-studio - Android studio中的这个框如何用快捷键打开?

Question

就是输入参数的格式会显示在上面,每次我打错删除了参数,它就不显示了,我要怎么调出来.

Answer 1

Alt+Enter is the puzzle key, used when you feel overwhelmed when writing code.
Ctrl+Space pops up completion directly.

Answer 2

Move the mouse here, hold down option, and press Enter to try

Answer 3

control+p

Answer 4

Move the cursor to new xxx, that is, in front of the brackets, and press the prompt key. The prompt key is different for everyone.