Can't use icons as a graphic into FXML

[Nathan SALAUN]

Hello,

I've got this piece of FXML code :

<...>
      <Button ...>
            <graphic>
                  <MaterialIcon glyphName="ADB" size="1em" glyphStyle="" />
            </graphic>
      </Button>
</...>

But it doesn't work, it triggers an InstanciationException when parsed by FXMLLoader.

What am I doing wrong ? Is there a way to fix this ?

Thanks !

[Jens Deters]

Could you share the stack trace of the Exception?

[Nathan SALAUN]

Here is it :

javafx.fxml.LoadException: 
/C:/Users/natinusala/Documents/launchmycraft/workspace/Executable/bin/theme/dialog.fxml:46

    at javafx.fxml.FXMLLoader.constructLoadException(Unknown Source)
    at javafx.fxml.FXMLLoader.access$700(Unknown Source)
    at javafx.fxml.FXMLLoader$InstanceDeclarationElement.constructValue(Unknown Source)
    at javafx.fxml.FXMLLoader$ValueElement.processStartElement(Unknown Source)
    at javafx.fxml.FXMLLoader.processStartElement(Unknown Source)
    at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
    at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
    at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
    at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
    at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
    at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
    at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
    at javafx.fxml.FXMLLoader.load(Unknown Source)
    at fr.launchmycraft.launcher.DialogFactory.createDialog(DialogFactory.java:59)
    at fr.launchmycraft.launcher.DialogFactory.createDialog(DialogFactory.java:108)
    at fr.launchmycraft.launcher.ExecutableMain.main(ExecutableMain.java:75)
Caused by: java.lang.InstantiationException: de.jensd.fx.glyphs.materialicons.MaterialIcon
    at java.lang.Class.newInstance(Unknown Source)
    at sun.reflect.misc.ReflectUtil.newInstance(Unknown Source)
    ... 14 more
Caused by: java.lang.NoSuchMethodException: de.jensd.fx.glyphs.materialicons.MaterialIcon.<init>()
    at java.lang.Class.getConstructor0(Unknown Source)
    ... 16 more

[Nathan SALAUN]

My guess is that MaterialIcon is an enum, so there is no public constructor and the instantiation obviously fails.

[Jens Deters]

Thanks! Sorry silly question, but 1. FontAwesomeFX 8.6 is included on the classpath? And 2. there are imports in the FXML, like? <?import de.jensd.fx.glyphs.materialicons.*?>

[Jens Deters]

"Works on my machine!" ;-)

[Nathan SALAUN]

1. Yes it is
2. I only imported de.jensd.glpyhs.materialicons.MaterialIcon

But I just figured it out, I have to put MaterialIconView and not MaterialIcon and it works fine. It was my fault, I should have checked it beforehand. Sorry for the inconvenience x)

[Nathan SALAUN]

I think that you should write a tiny documentation here on the repo, on how to use the library for both Java and FXML. I only found articles on your blog that weren't up to date anymore, hence my mistake. When we look at the code it's clear enough but I think that a documentation would be more efficient.

Anyway, sorry again, good luck for the next updates :)

[Jens Deters]

Yes, I guess you're right. Will work on the documentation! Glad it's clarified now ;-)!