Custom Language Support Tutorial Problem With Icon
I'm following the Custom Language Support Tutorial, and I'm already stuck at part 2.
The problem is that it won't load the Icon. I have copied everything from the shown code, and the .png file is in the correct location under com.simpleplugin.icons.
(When I hover over the path I provide in `IconLoader.getIcon(...)` while pressing `Shift` IntelliJ will display me the icon as well.)
The error I get is this:
java.lang.ExceptionInInitializerError
at com.simpleplugin.SimpleFileType.getIcon(SimpleFileType.java:40)
at com.intellij.ide.presentation.VirtualFilePresentation.getIconImpl(VirtualFilePresentation.java:46)
at com.intellij.util.IconUtil.getIcon(IconUtil.java:177)
at com.intellij.psi.impl.ElementBase.getElementIcon(ElementBase.java:227)
at com.intellij.psi.impl.ElementBase.doComputeIconNow(ElementBase.java:111)
....
I have no clue what to do. I tried using `ImageIcon` instead. I don't get any errors in that case, but neither is the icon displayed.
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It is hard to tell what exactly is wrong, but my best guess is that you didn't put the icon in the resource folder but in the src-folder (next to your Java classes).
Here you can see my setup folder structure and where my icons reside: https://github.com/SeeSharpSoft/intellij-csv-validator/tree/master/src/main/resources/media/icons
And here they are loaded: https://github.com/SeeSharpSoft/intellij-csv-validator/blob/master/src/main/java/net/seesharpsoft/intellij/plugins/csv/CsvIconProvider.java