IllegalArgumentException when Event occur, javafx


Question

I have a fxml file which has registered a Controller. The Controller implements EventHandler and so the method handle(ActionEvent e). If the registered event occur the code in the handler method is processed, but not always. But this following Exception trace is printed. Do I have missed something ?

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: argument type mismatch
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:491)
    at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:491)
    at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1502)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
    at javafx.event.Event.fireEvent(Event.java:203)
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3544)
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3375)
    at javafx.scene.Scene$MouseHandler.access$1900(Scene.java:3326)
    at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1617)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2394)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:312)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:237)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:354)
    at com.sun.glass.ui.View.handleMouseEvent(View.java:514)
    at com.sun.glass.ui.View.notifyMouse(View.java:877)
    at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
    at com.sun.glass.ui.gtk.GtkApplication.access$200(GtkApplication.java:47)
    at com.sun.glass.ui.gtk.GtkApplication$5$1.run(GtkApplication.java:137)
    at java.lang.Thread.run(Thread.java:724)
1
3
8/27/2013 12:01:50 PM

Ok, I solved the problem by myself:

I registered the handler function not only for "onAction" but also for the "onMouseReleased" event field. For that I have used SceneBuilder. But why actually can I not use "onMouseReleased" only "onAction" ?

3
7/14/2015 7:35:08 PM

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