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I'm currently running IntelliJ IDEA 13.1. While running IntelliJ 13 intellisense/autocomplete stopped working. I tried upgrading and it still doesn't work.
I can explicitly invoke code completion using ctrl+space. I looked in Settings->Editor->Code Completion and nothing looks out of place. Is there somewhere else that turns this feature on/off?
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By default, IntelliJ IDEA displays the code completion popup automatically as you type. If automatic completion is disabled, press Ctrl+Shift+Space or choose Code | Code Completion | Type-Matching from the main menu. If necessary, press Ctrl+Shift+Space once again.
Press Ctrl+Alt+S to open the IDE settings and select Editor | General | Code Completion. To automatically display the suggestions list, select the Show suggestions as you type checkbox.
Code completion (IntelliSense) To get you familiar with JetBrains Rider's code completion features, here are some implementation basics: The suggestion list of Automatic completion appears as soon as you start typing a new identifier. The suggestion list of Basic completion appears when you press Ctrl+Space .
The reason IntelliJ couldn't find declarations was that the subprojects were not built. After investigating why subprojects were not built, I found out that using "auto-import" was breaking the subprojects. After importing the project from build. gradle without auto-import, it worked for me.
For me it was because I did not have a folder marked as Source Root (it appears in blue).
To fix, right click your root source directory -> Mark As -> Source Root.
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Check to see if you accidentally turned on Power Save (File/Power Save Mode) I myself just discovered that File/Power Save Mode does turn it off. I was having the same problem and must have accidentally set Power Save Mode to on.
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File -> Settings-> Editor-> General -> Code Completion-> Auto pop up code Completion
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I'm using Mac and when I upgraded to Big Sur my intellisense stopped working.
This is due Big Sur has a shortcut for Input Source. By disabling Mac shortcut, will make Intellisense work again.
You can see the option to disable in mac:
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