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JavaFX でスクロール ペイン (アンカー ペイン付き) を作成しました。実行時に、長方形を作成して ScrollPane に追加しています。実行時に scrollPane の内容を変更できるスクロール ペインにマウス クリック イベントを追加したいと考えています。

私はそれをやろうとしましたが、ScrollPaneをクリックするとこの例外が発生します

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: argument type mismatch
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.reflect.misc.Trampoline.invoke(Unknown Source)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(Unknown Source)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(Unknown Source)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
at javafx.event.Event.fireEvent(Unknown Source)
at javafx.scene.Scene$ClickGenerator.postProcess(Unknown Source)
at javafx.scene.Scene$ClickGenerator.access$7900(Unknown Source)
at javafx.scene.Scene$MouseHandler.process(Unknown Source)
at javafx.scene.Scene$MouseHandler.access$1500(Unknown Source)
at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
at com.sun.glass.ui.View.notifyMouse(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$141(Unknown Source)
at com.sun.glass.ui.win.WinApplication$$Lambda$37/1109371569.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

これが私の JavaFX fxml 部分です。

<ScrollPane fx:id="scrollPane" layoutX="229.0" layoutY="183.0" onMouseClicked="#ChangeImageColor" prefHeight="137.0" prefWidth="143.0">
       <content>
           <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="154.0" prefWidth="157.0" />
       </content>
</ScrollPane>

そして私のJavaコード、

@FXML
void ChangeImageColor(ActionEvent event)
{
    System.out.print("Hit!");
    scrollPane.setContent(null);
    Rectangle rectangle = new Rectangle(200, 200, Color.BLUEVIOLET);
    rectangle.setStroke(Color.BLACK);
    rectangle.setStrokeWidth(25);
    scrollPane.setContent(rectangle);           
}

これは私が初期化で行っていることです、

Rectangle rectangle = new Rectangle(200, 200, Color.RED);
rectangle.setStroke(Color.BLACK);
rectangle.setStrokeWidth(25);
scrollPane.setContent(rectangle);
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2 に答える 2

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fxml にイベントを追加してもうまくいかなかった理由がわかりません。Java コードにイベント定義を追加しただけで、問題なく動作しました。

scrollPane.setOnMouseClicked(new EventHandler<Event>() 
{
    @Override
    public void handle(Event event)
    {
         //Logic on event occurrence
    }
});
于 2014-09-03T09:08:25.057 に答える