Question

我在JavaFX中构建了一个TableView，如图像（人员表）中所示，由一系列名称组成。每次单击“详细信息”按钮时，如何将相应行上的名字和姓氏打印到控制台？

（作为参考，我的最终目标和原始未答复的问题是详细信息按钮，用于打开模板场景并使用该特定人员的数据填充它。）

import javafx.application.Application;
import javafx.beans.property.*;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.event.*;
import javafx.geometry.*;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.image.Image;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.*;
import javafx.stage.*;
import javafx.util.Callback;

public class cutExample extends Application {
  public static void main(String[] args) { launch(args); }


  @Override public void start(final Stage stage) {
    stage.setTitle("People");

    // create a table.
    final TableView<Person> table = new TableView<>(
      FXCollections.observableArrayList(
        new Person("Jacob", "Smith"),
        new Person("Isabella", "Johnson"),
        new Person("Ethan", "Williams"),
        new Person("Emma", "Jones"),
        new Person("Michael", "Brown")
      )
    );

    // define the table columns.
    TableColumn<Person, String> firstNameCol = new TableColumn<>("First Name");
    firstNameCol.setCellValueFactory(new PropertyValueFactory("firstName"));
    TableColumn<Person, String> lastNameCol = new TableColumn<>("Last Name");
    lastNameCol.setCellValueFactory(new PropertyValueFactory("lastName"));
    TableColumn<Person, Boolean> actionCol = new TableColumn<>("Action");
    actionCol.setSortable(false);


    // create a cell value factory with a details button for each row in the table.
    actionCol.setCellFactory(new Callback<TableColumn<Person, Boolean>, TableCell<Person, Boolean>>() {
      @Override public TableCell<Person, Boolean> call(TableColumn<Person, Boolean> personBooleanTableColumn) {
        return new AddPersonCell(stage, table);
      }
    });

    table.getColumns().setAll(firstNameCol, lastNameCol, actionCol);
    table.setColumnResizePolicy(TableView.CONSTRAINED_RESIZE_POLICY);

    stage.setScene(new Scene(table));
    stage.show();
  }

  /** A table cell containing a button for details on each person. */
  private class AddPersonCell extends TableCell<Person, Boolean> {
    // a button for a specific person's details
    final Button details       = new Button("Details");
    // pads and centers the button in the cell.
    final StackPane paddedButton = new StackPane();


    /**
     * AddPersonCell constructor
     * @param stage the stage in which the table is placed.
     * @param table the table to which a new person can be added.
     */
    AddPersonCell(final Stage stage, final TableView table) {
      paddedButton.setPadding(new Insets(3));
      paddedButton.getChildren().add(details);


    }

    /** places an details button in the row only if the row is not empty. */
    @Override protected void updateItem(Boolean item, boolean empty) {
      super.updateItem(item, empty);
      if (!empty) {
        setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
        setGraphic(paddedButton);
      } else {
        setGraphic(null);
      }
    }
  }


}

Answer 1

您可以使用以下代码段：

actionCol.setCellFactory(column -> new TableCell<Person, Void>() {

        @Override
        protected void updateItem(Void item, boolean empty) {
            super.updateItem(item, empty);
            if (!empty) {
                Button details = new Button("details");
                details.setOnAction(e ->{Person person= (Person)getTableRow().getItem(); System.out.println(person.getFirstName()+", "+person.getLastName());});
                setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
                setGraphic(details);
            } else {
                setGraphic(null);
            }

        }

    });

修改：为避免投射，您可以使用此功能：

 details.setOnAction(e ->{int  index = getTableRow().getIndex();
 Person person= getTableView().getItems().get(index);
System.out.println(person.getFirstName()+", "+person.getLastName());});

Answer 2

Person somePersone = table.getSelectionModel（）。getSelectedItem（）;

JavaFX：如何识别TableView中的当前行？

2 个答案: