fxmlloader

问题 I am learning JavaFX, and I have come across an issue involving the instantiation of controllers that I can not seem to solve. Essentially, I am wondering if it is possible to do one of the following: Pass a parameter to the constructor of the controller when including FXML with <fx:include> ; or Specify a custom controller instance to use when including an FXML file with <fx:include> . Note that these issues are related. In fact, the reason I am asking about option (2) is because it would

问题 I'm trying to make a small "Login then Main Menu" form using JavaFX and Gluon's Scene Builder. I've made 2 scenes so far, the first one is a "Login" screen in which I've connected a SQLite Database, after putting the right Username and Password it loads perfectly fine and it changes to the second scene. For each scene I use a different class (FXML / FXML Controller). In the second scene I want 2 labels that I use to change according to the Database's data (More specifically First_Name and

问题 I'm trying to make a basic calculator application with JavaFX but I'm having trouble launching the application. This is the error I get Exception in Application start method java.lang.reflect.InvocationTargetException 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

问题 I'm a newcomer when it comes to JavaFX and I recently encountered a problem which really confuses me alot. I'm using a class called "MainController" which controlls an FXML-File containing a TabPane. Each tab is controlled by another controller. But there is one situation in which a tab needs to be deleted, so I need access to the MainController instance to remove the currently active tab from the pane. Whenever I'm using this code to get an instance of the currently running MainController, I

问题 I am trying to have a hyperlink open a new window. I have copied the fxml loader method from other parts of my code that work without issue. For some reason I am getting an fxml loader exception issue that says the root value is already specified. I have not specified a root value anywhere in my code. I also have not specified a controller in the fxml because other answers on stackoverflow said this might be causing the issue. this is the class that is loading the new Window. the issue occurs

问题 I have a project in school where I have to develop a program where you first can choose whether you want to save/read to/from a SQL DB or to save/read to/from XML. I've made a GUI where you can choose between both methods. The GUI closes after the user clicks on one of the buttons and the MainMenu GUI opens. Now I need to know in the MainMenuController what the user choose. I found online a Method to call the MainMenuController inside the first controller, with FXMLLoader.getController() .

问题 I have a project in school where I have to develop a program where you first can choose whether you want to save/read to/from a SQL DB or to save/read to/from XML. I've made a GUI where you can choose between both methods. The GUI closes after the user clicks on one of the buttons and the MainMenu GUI opens. Now I need to know in the MainMenuController what the user choose. I found online a Method to call the MainMenuController inside the first controller, with FXMLLoader.getController() .

问题 I have a recursive case of FXML loading needed here. If I choose to View an Objective, it takes me to another instance of the screen that loads a list of Strategy objects. If I choose to view a Strategy, it takes me to another instance of the screen that loads a list of Tactic objects. If I view a Tactic, it takes me to another instance of the screen that loads a list of Task objects. Naturally, I decided to use a base controller class, ViewChildItemController to handle inheritance. Then I

问题 I hope to get some answers regarding having fx:include statements for each tab in a tabpane. I have managed with ease to get content to show up BUT referencing methods of the associated controller class simply gives me a nullpointerreference exception no matter how I structure it. The controllers of the included FXML layouts do not have neither constructor not initialize() methods, are they needed? I tried some different things but always got the same exception. What I simply did was add a

问题 I hope to get some answers regarding having fx:include statements for each tab in a tabpane. I have managed with ease to get content to show up BUT referencing methods of the associated controller class simply gives me a nullpointerreference exception no matter how I structure it. The controllers of the included FXML layouts do not have neither constructor not initialize() methods, are they needed? I tried some different things but always got the same exception. What I simply did was add a