Question

我正在尝试将新窗口中TextField的用户数据输入到主窗口中的TableView。但它不是填充表，我没有得到任何异常。点击按钮，新窗口关闭。我正在创建一个非常简单的应用程序，以确定如何在控制器之间正确通信。

package sample;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application {
    static Stage primaryStage;
    @Override
    public void start(Stage primaryStage) throws Exception{
        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
        this.primaryStage= primaryStage;
        this.primaryStage.setTitle("Hello World");
        this.primaryStage.setScene(new Scene(root));
        this.primaryStage.show();
    }

    public  void closeStage(){
        primaryStage.close();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

主窗口的控制器类，其中包含用于打开新Stage的按钮和按钮：

package sample;

import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Scene;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;


public class Controller implements Initializable {
    @FXML TableView<radnici> tabela;
    @FXML TableColumn<radnici, String> kolona;
    @FXML Button dodajRadnikaDugme;
    @FXML Button closeDugme;

    Main main = new Main();
    static Stage stage = new Stage();
    Scene scene;
    BorderPane borderPane;

    @Override
    public void initialize(URL location, ResourceBundle resources) {
        kolona.setCellValueFactory(new PropertyValueFactory<radnici, String>("ime"));
    }

    public  TableView<radnici> getTabela() {
        return tabela;
    }

    public TableColumn<radnici, String> getKolona() {
        return kolona;
    }

    //Opening new Stage on button clicked
    public void dodajRadnikaDugemKlik() throws IOException {
        FXMLLoader loader = new FXMLLoader();
        borderPane = new BorderPane();
        loader.setLocation(getClass().getResource("dodajRadnika.fxml"));
        borderPane = loader.load();
        scene = new Scene(borderPane);
        stage.setTitle("Dodaj Radnika");
        stage.setScene(scene);
        stage.showAndWait();
    }

    //Closing main window
    public void closeDugmeKlik(){
        main.closeStage();
    }

    //Method for closing new window
    public  void CloseStage(){
        stage.close();
    }
}

新窗口的控制器类，其中只有TextField和按钮：

package sample;

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import java.io.IOException;

public class dodajRadnikaKontroler {
    @FXML TextField upišiRadnika;
    @FXML Button dodajRadnika;

    BorderPane borderPane;

    public void initialize(){
        System.out.println("učitavanje podataka...");
    }

    //Method for adding data on button clicked from TextField into table in main window
    @FXML public void dodajRadnikaKlik() throws IOException {
        FXMLLoader loader = new FXMLLoader();
        loader.setLocation(getClass().getResource("sample.fxml"));
        borderPane = new BorderPane();
        borderPane = loader.load();
        Controller controller = loader.getController();
        ObservableList<radnici> lista = FXCollections.observableArrayList();
        lista.add(new radnici(upišiRadnika.getText()));
        controller.tabela.setItems(lista);
        upišiRadnika.clear();
        controller.CloseStage();
    }
}

工人的模范类（“radnici”）：

package sample;

public class radnici {
    private String ime;

    public radnici(String ime) {
        this.ime = ime;
    }

    public String getIme() {
        return ime;
    }

    public void setIme(String ime) {
        this.ime = ime;
    }
}

请有人帮助我，这样我才能最终做到这一点。

Answer 1

注意：请使用proper naming conventions。我已经更改了一些类的名称，以便它们遵循标准约定。

您没有看到对表的更改，因为您正在从FXML文件加载一个全新的UI结构，包括一个新的TableView，然后您在该新表视图中设置项目。

FXMLLoader loader = new FXMLLoader();
loader.setLocation(getClass().getResource("sample.fxml"));
borderPane = new BorderPane();

// load a new UI from the FXML file:
borderPane = loader.load();
// get the controller for the new UI:
Controller controller = loader.getController();
ObservableList<radnici> lista = FXCollections.observableArrayList();
lista.add(new radnici(upišiRadnika.getText()));
// set the table items in the new UI:
controller.tabela.setItems(lista);
upišiRadnika.clear();
controller.CloseStage();

由于您甚至不显示此新用户界面，因此您无法看到表格中的项目。

据推测，您实际想要做的是更新现有表中的项目。您只需要参考表格的后备列表即可。您需要将其传递给第二个FXML文件的控制器。将字段和方法添加到DodajRadnikaKontroler：

public class DodajRadnikaKontroler {

    // Existing code omitted:

    private ObservableList<Radnici> items ;

    public void setItems(ObservableList<Radnici> items) {
        this.itmes = items ;
    }
}

然后在加载FMXL文件时将表格列表传递给新控制器：

//Opening new Stage on button clicked
public void dodajRadnikaDugemKlik() throws IOException {
    FXMLLoader loader = new FXMLLoader();
    borderPane = new BorderPane();
    loader.setLocation(getClass().getResource("dodajRadnika.fxml"));
    borderPane = loader.load();

    DodajRadnikaKontroler controller = loader.getController();
    controller.setItems(tabela.getItems());

    scene = new Scene(borderPane);
    stage.setTitle("Dodaj Radnika");
    stage.setScene(scene);
    stage.showAndWait();
}

现在在dodajRadnikaKlik()方法中，您只需更新列表：

@FXML public void dodajRadnikaKlik() throws IOException {

    // if you want to add an item:
    items.add(new radnici(upišiRadnika.getText()));

    // if you want to replace all items with the new one:
    // items.setAll(new radnici(upišiRadnika.getText()));

    upišiRadnika.clear();
    controller.CloseStage();
}

JavaFX Textfield数据到TableView的不同阶段

1 个答案: