线程“JavaFX Application Thread”中的exceptionjava.lang.IllegalArgumentException：参数类型不匹配
我必须做一个数独游戏。 当我尝试编码时，我发现了一个问题，我无法自行修复。 我正在使用SceneBuilder。如果您有任何想法来解决我的问题或一些建议，我会非常感激
那是我的代码：
FXMLDocumentController
public class FXMLDocumentController implements Initializable { @FXML private GridPane grid; public TextField[][] field= new TextField[9][9]; public class getXY{ private TextField temp; private int a; int x,y; public int getNodeByRowColumnIndex(final int row,final int column,GridPane gridPane) { Node result = null; ObservableList childrens = gridPane.getChildren(); for(Node node : childrens) { if(gridPane.getRowIndex(node) == row && gridPane.getColumnIndex(node) == column) { temp = (TextField) node; a=Integer.parseInt(temp.getText()); break; } } return a; } } @FXML private void handleButtonAction(ActionEvent event) { getXY a = new getXY(); for (int i=0; i<9;i++) for (int j=0; j<9;j++){ //int temp=a.getNodeByRowColumnIndex(i, j, grid); System.out.println("1"); } } @Override public void initialize(URL url, ResourceBundle rb) { for (int i=0; i<9;i++) for (int j=0; j<9;j++){ //field[i][j].setText("0"); TextField ffield = new TextField("0"); grid.add(ffield,i,j); } } } FXMLDocument.fxml
结果是：
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:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) 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:497) at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275) at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769) at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657) 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:198) at javafx.scene.Scene$KeyHandler.process(Scene.java:3964) at javafx.scene.Scene$KeyHandler.access$1800(Scene.java:3910) at javafx.scene.Scene.impl_processKeyEvent(Scene.java:2040) at javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2501) at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:197) at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:147) at java.security.AccessController.doPrivileged(Native Method) at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleKeyEvent$353(GlassViewEventHandler.java:228) at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389) at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassViewEventHandler.java:227) at com.sun.glass.ui.View.handleKeyEvent(View.java:546) at com.sun.glass.ui.View.notifyKey(View.java:966) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191) at java.lang.Thread.run(Thread.java:745)
您的处理程序方法链接到onKeyReleased处理程序：
由于onKeyReleased需要一个EventHandler ，你的方法（你很容易将其命名为handleButtonAction ）参数类型应该是KeyEvent ，而不是ActionEvent ：
@FXML private void handleButtonAction(KeyEvent event) { // ... }