I am using Intellij and used to use Alt+F1 to navigate between different views. I have begun to use Intelij in Ubuntu but when I press Alt+F1 the first icon on the launcher will be activated. I could not find this keyboard shortcut under Ubuntu shortcuts. I wonder if it is possible to change this shortcut key for focus on launcher.
You can find this setting in CompizConfig Settings Manager (CCSM): Desktop section → Ubuntu Unity Plugin → Launcher tab → "Key to put keyboard-focus on launcher"
You can install CCSM from the Software Center, or run
sudo apt install compizconfig-settings-manager
And you might need to log out and back in for it to take effect.
Source and more details: How to Tweak Unity on Ubuntu With the CompizConfig Settings Manager - How to Geek