Disable suggestion/syntax highlighting in both Intellij Idea and Android studio

Question

I wish to disable highlighting such as

• "change var to val"
• "can be inlined"

and the likes. How do I do that? (I don't want to disable error highlighting)

I tried disabling some "inspection" in the settings, but it didn't do what I wanted.

Answer 1

1. Alt+Enter on the warning
2. More actions
3. Disable inspection, or "Suppress for file"