there is my fxml file:
<AnchorPane fx:id="anch" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<children>
<ListView fx:id="list" layoutX="200.0" layoutY="7.0" prefHeight="393.0" prefWidth="200.0" />
</children>
</AnchorPane>
and controllerfile :
#FXML
private ListView<String> list;
#FXML
private AnchorPane anch;
ObservableList<String> li = FXCollections.observableArrayList("red","blue","yellow");
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
list.setItems(li);
}
When I run the program the program, it only shows the empty list.
Miss fx:controller in FXML
Ex:
<AnchorPane id="AnchorPane" prefHeight="380.0" prefWidth="387.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="PackageName.ControllerFileName">
here's document from oracle
Related
I created a GUI in Scenebuilder. 2 rectangles. A circle should be displayed for a KeyEvent. The circle is not displayed (playShoot()). Can objects be inserted without Scenebuilder? I think yes, but how? Do you have an idea?
Controller Class
public class PlayAnonymController{
#FXML
private Rectangle PLAYER;
#FXML
private Label gamoverLabel;
#FXML
private Label scoreLabel;
//Variablen
public enum Direction {
LEFT, RIGHT, SPACE, NONE
}
double cX;
public static List<Circle> bullets = new ArrayList<>();
#FXML
public void movePlayer(KeyEvent event) throws IOException{
KeyCode key = event.getCode(); // keyboard code for the pressed key
// System.out.println("Key Pressed: " + key); // for testing
switch (event.getCode()) {
case LEFT:
moveLeft();
break;
case RIGHT:
moveRight();
break;
case SPACE:
playerShoot();
break;
}
}
public void playerShoot() {
System.out.println("Test");
Circle circle = new Circle(50, 50, 50);
circle.setFill(Color.RED);
}
void moveLeft() {
PLAYER.setTranslateX(cX-=10);
}
void moveRight() {
PLAYER.setTranslateX(cX+=10);
}
}
My FXML file from Scenebuilder. At the bottom of the circle should be visible after a KeyEvent.
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.Pane?>
<?import javafx.scene.shape.Rectangle?>
<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/18" xmlns:fx="http://javafx.com/fxml/1" fx:controller="controller.PlayAnonymController">
<top>
<BorderPane prefHeight="37.0" prefWidth="600.0" BorderPane.alignment="CENTER">
<left>
<Label fx:id="scoreLabel" text="Label" BorderPane.alignment="CENTER" />
</left>
<center>
<Label fx:id="gamoverLabel" text="Label" BorderPane.alignment="CENTER" />
</center>
</BorderPane>
</top>
<bottom>
<Label text="Move: Pfeiltaste links / recht. Schießen Space." BorderPane.alignment="CENTER" />
</bottom>
<center>
<Pane prefHeight="200.0" prefWidth="200.0" BorderPane.alignment="CENTER">
<children>
<Rectangle fx:id="PLAYER" arcHeight="5.0" arcWidth="5.0" fill="#000911" height="5.0" layoutX="280.0" layoutY="305.0" onKeyPressed="#movePlayer" stroke="BLACK" strokeType="INSIDE" width="40.0" />
</children>
</Pane>
</center>
</BorderPane>
Hello I Have this portion of my code, I actually need disable the button when the user is logging, I am trying to pass the button to the FXML, but nothing happens: this is the code in the Main Controller, when the user is logged and data match with the password and username the button with the variable btn1 must disabled, I post my entire code for any help.
public Button getBtn1() {
return btn1;
}
public void conexion () {
String usus="";
String Passu ="";
String Bd="jdbc:sqlserver: // THUMANO2:1433;databaseName=QUORA";
String Usuario="sa";
String Pass="milkas87";
String SqlQuery= "select NOMBREUSUARIO, CONVERT (VARCHAR(50), (DecryptByPassPhrase('*xc/6789oÑ---+y',PASS))) as PASS from usuarios where CONVERT (VARCHAR(50), (DecryptByPassPhrase('*xc/6789oÑ---+y',PASS)))='"+fcontrasena.getText().toString().trim()+"'";
Connection Conexion = null;
try {
Conexion=DriverManager.getConnection(Bd, Usuario, Pass);
PreparedStatement ps =Conexion.prepareStatement(SqlQuery);
ResultSet rs = ps.executeQuery();
while(rs.next()) {
usus = rs.getString("NOMBREUSUARIO");
Passu = rs.getString("PASS");
}
if(fcontrasena.getText().toString().trim().equals(Passu) && fusuario.getText().toString().equals(usus)) {
Stage administrador=new Stage();
try {
FXMLLoader loader = new FXMLLoader(getClass().getResource("Admin.fxml"));
Stage login=(Stage)fusuario.getScene().getWindow();
Parent root = loader.load();
AdminScreenController controlador = loader.<AdminScreenController>getController();
controlador.setBtn1(btn1);
Scene scene=new Scene(root);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
administrador.setScene(scene);
administrador.setTitle("AdminScreen");
login.hide();
administrador.show();
} catch(Exception e) {}
}
} catch(SQLException e) {
JOptionPane.showMessageDialog(null,"error","ERROR",0);
}
}
this is the code for AdminScreenController:
public void setBtn1(Button btn1) {
btn1.setDisable(true);
}
this is the FXML Document:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.image.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>
<StackPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="576.0" prefWidth="791.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.AdminScreenController">
<children>
<BorderPane fx:id="bpane" prefHeight="621.0" prefWidth="791.0">
<left>
<VBox fx:id="vboxr" prefHeight="576.0" prefWidth="205.0" BorderPane.alignment="CENTER">
<children>
<BorderPane prefHeight="106.0" prefWidth="205.0">
<center>
<Button fx:id="btn1" mnemonicParsing="false" prefHeight="51.0" prefWidth="127.0" text="Planilla Sistemas" BorderPane.alignment="CENTER" />
</center>
</BorderPane>
<BorderPane prefHeight="106.0" prefWidth="205.0">
<center>
<Button fx:id="btn2" mnemonicParsing="false" prefHeight="51.0" prefWidth="127.0" text="AMP" BorderPane.alignment="CENTER" />
</center>
</BorderPane>
<BorderPane prefHeight="116.0" prefWidth="205.0">
<center>
<Button fx:id="btn3" mnemonicParsing="false" prefHeight="51.0" prefWidth="127.0" text="Tareas Funcionarios" BorderPane.alignment="CENTER" />
</center>
</BorderPane>
<BorderPane prefHeight="106.0" prefWidth="205.0">
<center>
<Button fx:id="btn4" mnemonicParsing="false" prefHeight="51.0" prefWidth="127.0" text="Indicadores" BorderPane.alignment="CENTER" />
</center>
</BorderPane>
<BorderPane prefHeight="106.0" prefWidth="205.0" />
</children>
</VBox>
</left>
<top>
<BorderPane prefHeight="145.0" prefWidth="791.0" BorderPane.alignment="CENTER">
<left>
<Pane fx:id="imgview" prefHeight="145.0" prefWidth="205.0" BorderPane.alignment="CENTER" />
</left>
</BorderPane>
</top>
</BorderPane>
</children>
</StackPane>
its something wrong? i need some orientation here. thanks.
Here is an example that shows the MVC relationship in JavaFX. The button is defined in FXML and injected into the controller where it can be accessed.
TestAppView.fxml
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<VBox alignment="CENTER" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.app.TestAppController">
<Button fx:id="myButton" text="Hello World" />
</VBox>
TestAppController.java
public class TestAppController implements Initializable {
#FXML
private Button myButton;
#Override
public void initialize(URL url, ResourceBundle resources) {
// Prints Hello World & disables the button when clicked
myButton.setOnAction((e) -> {
System.out.println("Hello World");
myButton.setDisable(true);
});
}
}
TestAppMain.java
public class TestAppMain extends Application {
#Override
public void start(Stage stage) throws Exception {
FXMLLoader loader = new FXMLLoader(TestAppController.class.getResource("TestAppView.fxml"));
Parent root = loader.load();
Scene scene = new Scene(root, 200, 200);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Two controllers are there and their respective FXML files.
If I click on the button in View1.fxml, the value of the comboBox is being changed however I am not getting the output in the console.
But if I click on the changeValueOfDemoComboBoxBtn in View2.fxml, the output is printed in the console.
View1.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/10.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="controller1">
<children>
<Button fx:id="button" layoutX="187.0" layoutY="120.0" mnemonicParsing="false" onAction="#handleButtonAction" text="Button" />
</children>
</AnchorPane>
View2.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.ComboBox?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/10.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="controller2">
<children>
<Button fx:id="changeValueOfDemoComboBoxBtn" layoutX="200.0" layoutY="264.0" mnemonicParsing="false" onAction="#handleChangeValueOfDemoComboBoxBtnAction" text="Button" />
<ComboBox fx:id="demoComboBox" layoutX="161.0" layoutY="127.0" onAction="#handleDemoComboBox" prefWidth="150.0" />
</children>
</AnchorPane>
Controller1.java
#FXML
private Button button;
#FXML
private void handleButtonAction() throws IOException {
StackPane contentStackPane = (StackPane)mainScene.lookup("#contentStackPane");
FXMLLoader loader = new FXMLLoader(getClass().getResource("view2.fxml));
Parent view2Fxml = loader.load();
Controller2 controller2 = loader.getController();
controller2.setDemoComboBox("Apple");
contentStackPane.getChildren().removeAll();
contentStackPane.getChildren().setAll(view2Fxml );
}
Controller2.java
#FXML
private ComboBox<String> demoComboBox;
#FXML
private Button changeValueOfDemoComboBoxBtn;
#FXML
private void handleDemoComboBox() {
System.out.println("Value changed in Demo ComboBox");
}
#FXML
private void handleChangeValueOfDemoComboBoxBtnAction(){
setDemoComboBox("Oranges");
}
public void setDemoComboBox(String value){
demoComboBox.setValue(value);
}
This is my main UI Main UI
I have a VBox (Fxid:datePane) within a AnchorPane. The Vbox is blue in color.
When the button with the label "Add" is clicked, a "second.fxml" file is loaded into the VBox (Fxid:datePane).
The fxml file loaded takes the height and width of the Vbox.
The second.fxml has a VBox which is red in color.
However if i resize the screen, the loaded file doesn't change its height and width accordingly.
After resizing the screen
How do i make sure the loaded fxml file takes the width and height of its parent VBox (Fxid:datePane) ???
This is my FxmlController.java file
#FXML
private Button btnAdd;
#FXML
private VBox datePane;
#FXML
private VBox vbxsecond;
#FXML
private VBox vbxThird;
#FXML
private AnchorPane apLoader;
VBox v;
#Override
public void initialize(URL arg0, ResourceBundle arg1) {
// TODO Auto-generated method stub
double w = apLoader.getWidth();
double h = apLoader.getHeight();
System.out.println(h);
}
public void setDataPane(Node node) {
// update VBox with new form(FXML) depends on which button is clicked
datePane.getChildren().setAll(node);
}
public VBox fadeAnimate(String url) throws IOException {
v = (VBox) FXMLLoader.load(getClass().getResource(url));
FadeTransition ft = new FadeTransition(Duration.millis(1500));
ft.setNode(v);
ft.setFromValue(0.1);
ft.setToValue(1);
ft.setCycleCount(1);
ft.setAutoReverse(false);
double w = datePane.getWidth();
double h = datePane.getHeight();
v.setPrefHeight(h);
v.setPrefWidth(w);
ft.play();
return v;
}
public void loadPane() throws IOException {
try{
setDataPane(fadeAnimate("/resources/second.fxml"));
}catch(IOException e)
{
e.printStackTrace();
}
}
public void loadPane2 () throws IOException {
try{
setDataPane(fadeAnimate("/resources/third.fxml"));
}catch(IOException e)
{
e.printStackTrace();
}
}
This is my Main.java file
#FXML
private VBox vbxsecond;
#FXML
private VBox datePane;
#Override
public void start(Stage primaryStage) {
try {
//BorderPane root = new BorderPane();
Parent root = FXMLLoader.load(getClass().getResource("/resources/dashboard.fxml"));
Scene scene = new Scene(root);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
//primaryStage.setMaximized(true);
primaryStage.show();
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
This is my dashboard.fxml file
AnchorPane minHeight="800.0" prefHeight="800.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.FxmlController">
<children>
<SplitPane dividerPositions="0.29797979797979796" layoutX="14.0" layoutY="14.0" prefHeight="800.0" prefWidth="800.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<items>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="798.0" prefWidth="192.0">
<children>
<Button fx:id="btnAdd" layoutX="22.0" layoutY="122.0" mnemonicParsing="false" onAction="#loadPane" prefHeight="25.0" prefWidth="51.0" text="Add" AnchorPane.leftAnchor="22.0" AnchorPane.topAnchor="122.0" />
<Button fx:id="btnadd2" layoutX="57.0" layoutY="281.0" mnemonicParsing="false" onAction="#loadPane2" text="ADD second" />
</children>
</AnchorPane>
<AnchorPane fx:id="apLoader" minHeight="0.0" minWidth="0.0" prefHeight="158.0" prefWidth="814.0">
<children>
<VBox fx:id="datePane" layoutX="10.0" layoutY="23.0" prefHeight="798.0" prefWidth="628.0" style="-fx-background-color: Blue;" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0" />
</children>
</AnchorPane>
</items>
</SplitPane>
</children>
</AnchorPane>
This is my second.fxml file
<VBox fx:id="vbxsecond" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="800.0" prefWidth="814.0" style="-fx-background-color: Red;" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1">
<children>
<Label fx:id="vbxSecond" text="HELLOOO" VBox.vgrow="ALWAYS">
<font>
<Font size="96.0" />
</font>
</Label>
</children>
</VBox>
This is my third.fxml file
<VBox fx:id="vbxThird" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="800.0" prefWidth="814.0" style="-fx-background-color: Pink;" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1">
<children>
<Label text="Third HELOO" VBox.vgrow="ALWAYS">
<font>
<Font size="85.0" />
</font>
</Label>
</children>
</VBox>
I solved the problem. I just had to set the values of the VBox in the second.fxml and VBox (Fxid:datePane) in the main.fxml to
AnchorPane.topAnchor="0.0"
AnchorPane.bottomAnchor="0.0"
AnchorPane.leftAnchor="0.0"
AnchorPane.rightAnchor="0.0"
and it worked.
I'm working on the project which contains multiple controllers (1 main and two for each of the Fxml files). Unfortunately while running the program, console throw the NullPointerExeption at me. I found out that it's the main controller fault, but still having this information I'm unable to fix this. Could you give me some tips how to solve this issue ?
Here i got the full track:
MainController class:
public class MainController {
#FXML LogInController logInController;
DBConnect dbConnect;
#FXML FlightControlController flightControlController;
#FXML public void initialize() {
logInController.initialize(this);
flightControlController.initialize(this);
dbConnect.initialize(this);
}
}
DBConnect class:
public void dbConnect() throws SQLException {
try {
Conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/nasa", "root", "1234");
} catch(Exception e) {
System.out.println(e.getStackTrace());
}
}
public boolean isCorrect(String login,String password) throws SQLException, IOException {
Stmt = Conn.createStatement();
Rs = Stmt.executeQuery("SELECT * FROM Users WHERE login='"+login+"'AND password='"+password+"';");
if(Rs.next()) {
return true;
} else {
return false;
}
}
public void initialize(MainController mainController) {
this.mainController=mainController;
}
LogInController class:
MainController mainController;
#FXML DBConnect dbConnect;
#FXML TextField logginField = null;
#FXML PasswordField passwordFiled=null;
#FXML Button logInButton;
#FXML
public void buttonClicked(ActionEvent event) throws SQLException, IOException {
mainController.dbConnect.dbConnect();
if(mainController.dbConnect.isCorrect(logginField.getText(),passwordFiled.getText())) {
Parent root = FXMLLoader.load(getClass().getResource("/view/FlightControlView.fxml"));
Scene scene = new Scene(root);
Stage stage = (Stage) ((Node) event.getSource()).getScene().getWindow();
stage.setScene(scene);
stage.show();
} else {
System.out.print("An error have occured");
}
}
public void initialize(MainController mainController) {
this.mainController=mainController;
}
FlightControlController Class:
#FXML Label label;
MainController mainController;
public void initialize(MainController mainController) {
this.mainController = mainController;
}
And the error which occurs:
Caused by: java.lang.NullPointerException at
controller.LogInController.buttonClicked(LogInController.java:31) ...
62 more
I'm not sure but is it possible that MainController (which doesn't have his own Fxml file) so that FXMLLoader doesn't initialize MainController's properties?
#EDIT
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.text.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="693.0" prefWidth="1062.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="controller.LogInController">
<children>
<SplitPane dividerPositions="0.21320754716981133" layoutX="331.0" layoutY="220.0" prefHeight="693.0" prefWidth="1062.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<items>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="160.0" prefWidth="100.0">
<children>
<Label alignment="CENTER" layoutY="-1.0" maxHeight="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="70.0" prefWidth="222.0" text="NASA DATABASE" />
<TextField fx:id="logginField" layoutX="18.0" layoutY="101.0" promptText="Login" />
<PasswordField fx:id="passwordFiled" layoutX="18.0" layoutY="165.0" promptText="Password" />
<Button fx:id="logInButton" onAction="#buttonClicked" layoutX="79.0" layoutY="230.0" mnemonicParsing="false" text="Log In" />
</children>
</AnchorPane>
<AnchorPane prefHeight="691.0" prefWidth="493.0" SplitPane.resizableWithParent="false">
<children>
<Label alignment="CENTER" layoutX="97.0" layoutY="104.0" prefHeight="417.0" prefWidth="635.0" text="NOT AVAILABLE, PLEASE LOG IN" AnchorPane.leftAnchor="113.0" AnchorPane.rightAnchor="113.0">
<font>
<Font name="System Bold Italic" size="37.0" />
</font>
</Label>
</children>
</AnchorPane>
</items>
</SplitPane>
</children>
</AnchorPane>