当我的程序运行时，它显示这些错误，即使它运行正如我也要求它。当您按下easy或hard并获得至少两个点时，仅弹出这些错误。我的代码将在错误下面给出。
Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: Children: duplicate children added: parent = Pane@3175f25b[styleClass=root]
at javafx.scene.Parent$2.onProposedChange(Parent.java:454)
at com.sun.javafx.collections.VetoableListDecorator.add(VetoableListDecorator.java:206)
at TransFo.TransoFo.lambda$null$2(TransoFo.java:251)
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:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8411)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
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$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java:416)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
这是我的代码
public class TransoFo extends Application{
private int total;
public void start(Stage stage){
Pane p = new Pane();
Button b = new Button("easy");
b.setStyle("-fx-background-radius: 3em;" +
"-fx-background-color: #66a3ff;" +
"-fx-min-width: 120;" +
"-fx-min-height: 40;" +
"-fx-max-width: 120;" +
"-fx-min-height: 40;" +
"-fx-cursor: hand;" +
"-fx-font-size: 15;" +
"-fx-text-fill: white;");
b.setLayoutX(307);
b.setLayoutY(400);
Button hard = new Button("hard");
hard.setStyle("-fx-background-radius: 3em;" +
"-fx-background-color: #66a3ff;" +
"-fx-min-width: 120;" +
"-fx-min-height: 40;" +
"-fx-max-width: 120;" +
"-fx-font-size: 15;" +
"-fx-min-height: 40;" +
"-fx-cursor: hand;" +
"-fx-text-fill: white;");
hard.setLayoutX(307);
hard.setLayoutY(450);
Circle bi = new Circle();
Rectangle biRec = new Rectangle();
Circle circle = new Circle();
Rectangle rec = new Rectangle();
rec.setWidth(20);
rec.setHeight(30);
rec.setArcWidth(5);
rec.setArcHeight(5);
rec.setStyle("-fx-fill: #ff9933;" +
"-fix-stroke-width: 20;" +
"-fix-stroke: #ff4d4d;");
circle.setStyle("-fx-fill: #88ff4d;" +
"-fx-stroke-width: 12;" +
"-fx-stroke: #3399ff;");
circle.setCenterX(370);
circle.setCenterY(250);
circle.setRadius(50);
biRec.setWidth(30);
biRec.setHeight(20);
biRec.setArcWidth(5);
biRec.setArcHeight(5);
biRec.setStyle("-fx-fill: #ff9933;" +
"-fix-stroke-width: 20;" +
"-fix-stroke: #ff4d4d;");
bi.setStyle("-fx-fill: #88ff4d;" +
"-fx-stroke-width: 12;" +
"-fx-stroke: #3399ff;");
bi.setCenterX(370);
bi.setCenterY(250);
bi.setRadius(100);
p.getChildren().addAll(bi, biRec, circle, rec);
// transition for small circle and rectangle
PathTransition pt1 = new PathTransition();
pt1.setDuration(Duration.millis(1200));
pt1.setPath(bi);
pt1.setNode(biRec);
pt1.setOrientation(PathTransition.OrientationType.ORTHOGONAL_TO_TANGENT);
pt1.setCycleCount(Timeline.INDEFINITE);
pt1.setAutoReverse(false);
pt1.play();
PathTransition pt3 = new PathTransition();
pt3.setDuration(Duration.millis(800));
pt3.setPath(circle);
pt3.setNode(rec);
pt3.setOrientation(PathTransition.OrientationType.ORTHOGONAL_TO_TANGENT);
pt3.setCycleCount(Timeline.INDEFINITE);
pt3.setAutoReverse(false);
pt3.play();
// button play event lambda expression
b.setOnAction((ActionEvent event) -> {
bi.setVisible(false);
biRec.setVisible(false);
circle.setVisible(false);
rec.setVisible(false);
b.setVisible(false);
Circle big = new Circle();
// create rectangle for big circle
Rectangle bigRec = new Rectangle();
Circle circ = new Circle();
Rectangle r = new Rectangle();
//event for small rectangle
r.setWidth(20);
r.setHeight(30);
r.setArcWidth(5);
r.setArcHeight(5);
r.setStyle("-fx-fill: #ff9933;" +
"-fix-stroke-width: 20;" +
"-fix-stroke: #ff4d4d;");
circ.setStyle("-fx-fill: #88ff4d;" +
"-fx-stroke-width: 12;" +
"-fx-stroke: #3399ff;");
circ.setCenterX(370);
circ.setCenterY(300);
circ.setRadius(50);
bigRec.setWidth(30);
bigRec.setHeight(20);
bigRec.setArcWidth(5);
bigRec.setArcHeight(5);
bigRec.setStyle("-fx-fill: #ff9933;" +
"-fix-stroke-width: 20;" +
"-fix-stroke: #ff4d4d;");
big.setStyle("-fx-fill: #88ff4d;" +
"-fx-stroke-width: 12;" +
"-fx-stroke: #3399ff;");
big.setCenterX(370);
big.setCenterY(300);
big.setRadius(100);
// transition for small circle and rectangle
PathTransition pt2 = new PathTransition();
pt2.setDuration(Duration.millis(1200));
pt2.setPath(big);
pt2.setNode(bigRec);
pt2.setOrientation(PathTransition.OrientationType.ORTHOGONAL_TO_TANGENT);
pt2.setCycleCount(Timeline.INDEFINITE);
pt2.setAutoReverse(true);
pt2.play();
PathTransition pt = new PathTransition();
pt.setDuration(Duration.millis(800));
pt.setPath(circ);
pt.setNode(r);
pt.setOrientation(PathTransition.OrientationType.ORTHOGONAL_TO_TANGENT);
pt.setCycleCount(Timeline.INDEFINITE);
pt.setAutoReverse(false);
pt.play();
Button b2 = new Button(" | | ");
b2.setStyle("-fx-background-radius: 3em;" +
"-fx-background-color: #66a3ff;" +
"-fx-min-width: 70;" +
"-fx-min-height: 40;" +
"-fx-max-width: 700;" +
"-fx-min-height: 40;" +
"-fx-cursor: hand;" +
"-fx-text-fill: white;");
b2.setLayoutX(670);
b2.setLayoutY(10);
b2.setOnAction((ActionEvent event1) -> {
pt2.stop();
pt.stop();
});
Button b3 = new Button(" ▶ ");
b3.setStyle("-fx-background-radius: 3em;" +
"-fx-background-color: #66a3ff;" +
"-fx-min-width: 70;" +
"-fx-min-height: 40;" +
"-fx-max-width: 700;" +
"-fx-min-height: 40;" +
"-fx-cursor: hand;" +
"-fx-text-fill: white;");
b3.setLayoutX(590);
b3.setLayoutY(10);
b3.setOnAction((ActionEvent event2) -> {
pt.play();
pt2.play();
});
Button match = new Button(" Match ");
match.setStyle("-fx-background-radius: 3em;" +
"-fx-background-color: #66a3ff;" +
"-fx-min-width: 120;" +
"-fx-min-height: 40;" +
"-fx-max-width: 120;" +
"-fx-min-height: 40;" +
"-fx-cursor: hand;" +
"-fx-text-fill: white;");
match.setLayoutX(310);
match.setLayoutY(450);
Label scoreTitle = new Label("Score");
scoreTitle.setFont(new Font("Courier New bold", 30));
scoreTitle.setLayoutX(310);
scoreTitle.setLayoutY(40);
// here is the button Match's event (lambda expression)
Label score = new Label("0");
match.setOnAction((ActionEvent evt) -> {
Bounds bBounds = bigRec.getBoundsInParent();
Bounds bounds = r.getBoundsInParent();
if (bounds.getMinY() <= bBounds.getMaxY() && bounds.getMaxY() >= bBounds.getMinY()) {
total += 1;
String str = Integer.toString(total);
score.setText(str);
score.setFont(new Font("Courier New bold", 20));
score.setLayoutX(350);
score.setLayoutY(90);
p.getChildren().add(score);
pt.play();
pt2.play();
}
else {
total = 0;
String str = Integer.toString(total);
score.setText(str);
score.setFont(new Font("Courier New bold", 20));
score.setLayoutX(350);
score.setLayoutY(90);
p.getChildren().add(score);
}
});
p.getChildren().addAll(big, bigRec, circ, r, b2, b3, match, scoreTitle);
//fade transition for
FadeTransition ft = new FadeTransition(Duration.millis(1500), big);
ft.setFromValue(0.1);
ft.setToValue(1);
ft.play();
//transition for big rec
FadeTransition ft2 = new FadeTransition(Duration.millis(1500), bigRec);
ft2.setFromValue(0.1);
ft2.setToValue(1);
ft2.play();
//transition for circ
FadeTransition ft3 = new FadeTransition(Duration.millis(1500), circ);
ft3.setFromValue(0.1);
ft3.setToValue(1);
ft3.play();
//transition for r
FadeTransition ft4 = new FadeTransition(Duration.millis(1500), r);
ft4.setFromValue(0.1);
ft4.setToValue(1);
ft4.play();
//transition for match
FadeTransition ft5 = new FadeTransition(Duration.millis(1500), match);
ft5.setFromValue(0.1);
ft5.setToValue(1);
ft5.play();
//transition for pause button
FadeTransition ft6 = new FadeTransition(Duration.millis(3000), b2);
ft6.setFromValue(0.1);
ft6.setToValue(1);
ft6.play();
//transtion for play button
FadeTransition ft7 = new FadeTransition(Duration.millis(3000), b3);
ft7.setFromValue(0.1);
ft7.setToValue(1);
ft7.play();
});
hard.setOnAction((ActionEvent evter) -> {
bi.setVisible(false);
biRec.setVisible(false);
circle.setVisible(false);
rec.setVisible(false);
b.setVisible(false);
Circle big = new Circle();
// create rectangle for big circle
Rectangle bigRec = new Rectangle();
Circle circ = new Circle();
Rectangle r = new Rectangle();
//event for small rectangle
r.setWidth(20);
r.setHeight(30);
r.setArcWidth(5);
r.setArcHeight(5);
r.setStyle("-fx-fill: #ff9933;" +
"-fix-stroke-width: 20;" +
"-fix-stroke: #ff4d4d;");
circ.setStyle("-fx-fill: #88ff4d;" +
"-fx-stroke-width: 12;" +
"-fx-stroke: #3399ff;");
circ.setCenterX(370);
circ.setCenterY(300);
circ.setRadius(50);
bigRec.setWidth(30);
bigRec.setHeight(20);
bigRec.setArcWidth(5);
bigRec.setArcHeight(5);
bigRec.setStyle("-fx-fill: #ff9933;" +
"-fix-stroke-width: 20;" +
"-fix-stroke: #ff4d4d;");
big.setStyle("-fx-fill: #88ff4d;" +
"-fx-stroke-width: 12;" +
"-fx-stroke: #3399ff;");
big.setCenterX(370);
big.setCenterY(300);
big.setRadius(100);
// transition for small circle and rectangle
PathTransition pt2 = new PathTransition();
pt2.setDuration(Duration.millis(1100));
pt2.setPath(big);
pt2.setNode(bigRec);
pt2.setOrientation(PathTransition.OrientationType.ORTHOGONAL_TO_TANGENT);
pt2.setCycleCount(Timeline.INDEFINITE);
pt2.setAutoReverse(true);
pt2.play();
PathTransition pt = new PathTransition();
pt.setDuration(Duration.millis(700));
pt.setPath(circ);
pt.setNode(r);
pt.setOrientation(PathTransition.OrientationType.ORTHOGONAL_TO_TANGENT);
pt.setCycleCount(Timeline.INDEFINITE);
pt.setAutoReverse(false);
pt.play();
Button b2 = new Button(" | | ");
b2.setStyle("-fx-background-radius: 3em;" +
"-fx-background-color: #66a3ff;" +
"-fx-min-width: 70;" +
"-fx-min-height: 40;" +
"-fx-max-width: 700;" +
"-fx-min-height: 40;" +
"-fx-cursor: hand;" +
"-fx-text-fill: white;");
b2.setLayoutX(670);
b2.setLayoutY(10);
b2.setOnAction((ActionEvent event1) -> {
pt2.stop();
pt.stop();
});
Button b3 = new Button(" ▶ ");
b3.setStyle("-fx-background-radius: 3em;" +
"-fx-background-color: #66a3ff;" +
"-fx-min-width: 70;" +
"-fx-min-height: 40;" +
"-fx-max-width: 700;" +
"-fx-min-height: 40;" +
"-fx-cursor: hand;" +
"-fx-text-fill: white;");
b3.setLayoutX(590);
b3.setLayoutY(10);
b3.setOnAction((ActionEvent event2) -> {
pt.play();
pt2.play();
});
Button match = new Button(" Match ");
match.setStyle("-fx-background-radius: 3em;" +
"-fx-background-color: #66a3ff;" +
"-fx-min-width: 120;" +
"-fx-min-height: 40;" +
"-fx-max-width: 120;" +
"-fx-min-height: 40;" +
"-fx-cursor: hand;" +
"-fx-text-fill: white;");
match.setLayoutX(310);
match.setLayoutY(450);
Label scoreTitle = new Label("Score");
scoreTitle.setFont(new Font("Courier New bold", 30));
scoreTitle.setLayoutX(310);
scoreTitle.setLayoutY(40);
Label score = new Label("0");
// here is the button Match's event (lambda expression)
match.setOnAction((ActionEvent evt) -> {
Bounds bBounds = bigRec.getBoundsInParent();
Bounds bounds = r.getBoundsInParent();
if (bounds.getMinY() <= bBounds.getMaxY() && bounds.getMaxY() >= bBounds.getMinY()) {
total += 1;
String str = Integer.toString(total);
score.setText(str);
score.setFont(new Font("Courier New bold", 20));
score.setLayoutX(350);
score.setLayoutY(90);
p.getChildren().add(score);
pt.play();
pt2.play();
}
else{
total = 0;
String str = Integer.toString(total);
score.setText(str);
score.setFont(new Font("Courier New bold", 20));
score.setLayoutX(350);
score.setLayoutY(90);
p.getChildren().add(score);
}
});
p.getChildren().addAll(big, bigRec, circ, r, b2, b3, match, scoreTitle);
//fade transition for
FadeTransition ft = new FadeTransition(Duration.millis(1500), big);
ft.setFromValue(0.1);
ft.setToValue(1);
ft.play();
//transition for big rec
FadeTransition ft2 = new FadeTransition(Duration.millis(1500), bigRec);
ft2.setFromValue(0.1);
ft2.setToValue(1);
ft2.play();
//transition for circ
FadeTransition ft3 = new FadeTransition(Duration.millis(1500), circ);
ft3.setFromValue(0.1);
ft3.setToValue(1);
ft3.play();
//transition for r
FadeTransition ft4 = new FadeTransition(Duration.millis(1500), r);
ft4.setFromValue(0.1);
ft4.setToValue(1);
ft4.play();
//transition for match
FadeTransition ft5 = new FadeTransition(Duration.millis(1500), match);
ft5.setFromValue(0.1);
ft5.setToValue(1);
ft5.play();
//transition for pause button
FadeTransition ft6 = new FadeTransition(Duration.millis(3000), b2);
ft6.setFromValue(0.1);
ft6.setToValue(1);
ft6.play();
//transtion for play button
FadeTransition ft7 = new FadeTransition(Duration.millis(3000), b3);
ft7.setFromValue(0.1);
ft7.setToValue(1);
ft7.play();
// transition for Score Label
FadeTransition ft8 = new FadeTransition(Duration.millis(3000), scoreTitle);
ft8.setFromValue(0.1);
ft8.setToValue(1);
ft8.play();
// transition for
});
p.getChildren().addAll(b, hard);
p.setStyle("-fx-background-color: #88ff4d;");
Scene s = new Scene(p, 750, 650);
stage.setResizable(false);
stage.setScene(s);
stage.show();
}
public static void main(String[] args) {
Application.launch(args);
}
}
答案 0 :(得分：2)
您的问题是您要将多个相同的节点添加到场景图中。
例如，你有这个：
Label score = new Label("0");
match.setOnAction((ActionEvent evt) -> {
Bounds bBounds = bigRec.getBoundsInParent();
Bounds bounds = r.getBoundsInParent();
if (bounds.getMinY() <= bBounds.getMaxY() && bounds.getMaxY() >= bBounds.getMinY()) {
total += 1;
String str = Integer.toString(total);
score.setText(str);
score.setFont(new Font("Courier New bold", 20));
score.setLayoutX(350);
score.setLayoutY(90);
p.getChildren().add(score);
pt.play();
pt2.play();
}....
这一行
正在发生什么p.getChildren().add(score);
导致您的问题。你应该设置它，然后只是引用它：
例如：
Label score = new Label("0");
score.setText(str);
score.setFont(new Font("Courier New bold", 20));
score.setLayoutX(350);
score.setLayoutY(90);
p.getChildren().add(score);
match.setOnAction((ActionEvent evt) -> {
Bounds bBounds = bigRec.getBoundsInParent();
Bounds bounds = r.getBoundsInParent();
if (bounds.getMinY() <= bBounds.getMaxY() && bounds.getMaxY() >= bBounds.getMinY()) {
total += 1;
String str = Integer.toString(total);
score.setText(str);
pt.play();
pt2.play();
}....
答案 1 :(得分：1)
您应该将标签得分设为全局，并且只添加一次。
在开始时添加标签，但不在事件处理程序中添加。
搜索并删除所有
p.getChildren().add(score);
找到
Pane p = new Pane();并在其下添加。
Pane p = new Pane();
Label score = new Label("0");
现在将
p.getChildren().addAll(bi, biRec, circle, rec);更改为：
p.getChildren().addAll(bi, biRec, circle, rec, score);