JavaFX Stage / Scene自动调整大小 [英] JavaFX Stage/Scene automatic resize
问题描述
如图所示,上面的红色框是GridBox,下面是带有Splitpane的VBox( ListView)和Gridpane(2个按钮)。我想要实现的是当按钮隐藏<<<<时按下VBox单击。
Like the picture showed, the red box above is a GridBox and below is a VBox with Splitpane (ListView) and Gridpane (2 Buttons). What I want to implement is to hide the VBox below, when the Button "Hide <<<" is clicked.
但现在,红色通过调用root.getChildren()删除下面的框.remove(child);窗口(舞台)或场景如何自动调整大小。
But now, the red box below is removed by call root.getChildren().remove(child); How can the Window(Stage) or Scene automatically resizing.
在控制器中:
public class FunctionOwnerFX extends Application{
public static String HIDE = "Hide Libraries <<<";
public static String SHOW = "Show Libraries >>>";
private boolean isHidden = false;
@FXML
private TextField textfield;
@FXML
private Button btn2;
@FXML
private VBox vbox;
@FXML
private VBox libraryVbox;
private Stage primaryStage;
@Override
public void start(Stage stage) throws Exception{
primaryStage = stage;
Parent root = FXMLLoader.load(getClass().getResource("new_function_owner.fxml"));
Scene scene = new Scene(root);
stage.setTitle("New Function Owner");
stage.setScene(scene);
stage.sizeToScene();
stage.show();
}
@FXML
protected void splitPaneControl(){
isHidden = !isHidden;
if (isHidden) {
vbox.getChildren().remove(libraryVbox);
primaryStage.sizeToScene();
btn2.setText(SHOW);
} else {
vbox.getChildren().add(libraryVbox);
primaryStage.sizeToScene();
btn2.setText(HIDE);
}
}
private ArrayList<String> getMatches(String str){
return null;
}
public static void main(String[] args) {
launch(args);
}
}
当我使用方法sizeToScene时发生运行时错误( ):
The Runtime error occured when I used the method sizeToScene():
Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
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.EventUtil.fireEventImpl(Unknown Source)
at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
at javafx.event.Event.fireEvent(Unknown Source)
at javafx.scene.Node.fireEvent(Unknown Source)
at javafx.scene.control.Button.fire(Unknown Source)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(Unknown Source)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(Unknown Source)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(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.EventUtil.fireEventImpl(Unknown Source)
at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
at javafx.event.Event.fireEvent(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.lambda$handleMouseEvent$354(Unknown Source)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(Unknown Source)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
at com.sun.glass.ui.View.notifyMouse(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
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)
... 49 more
Caused by: java.lang.NullPointerException
at FunctionOwnerFX.splitPaneControl(FunctionOwnerFX.java:65)
... 58 more
推荐答案
我没有足够的声誉发表评论(需要50,但我有48)s我会回答。现在回到主题,尝试在删除节点后调用舞台对象上的方法sizeToScene。
I don't have enough reputation to make a comment (need 50, but I have 48) so I will make an answer. Now back on topic, try calling the method sizeToScene on your stage object after you remove the node.
https://docs.oracle.com/javase/8/javafx/api/javafx/stage/Window .html#sizeToScene--
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