JavaFX tableview填充动态创建的嵌套列中的值
我在我们的一个javaFX应用程序中遇到JAVAFX tableview中的一点。我使用一个表视图来显示一些数据。在该tableView中，其中一列具有嵌套列。我从列表中创建的这些嵌套列。现在我在这里举一个例子。现在我在tableView中有两列。姓名和技能。技能组列下面有两个嵌套列。我正在从nestedColumnsNameList读取嵌套列名。我试图从列表skillList填充这些嵌套列中的值，该列表有两个值[Java，Dot Net]。现在，每当我尝试从skillList中填充这些嵌套列中的值时，对于每一行，我在每个嵌套列中获得与Dot Net相同的值。以下是我的代码：
package demo.tableView;
import java.util.ArrayList;
import java.util.List;
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.HPos;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.Spinner;
import javafx.scene.control.SpinnerValueFactory;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
public class UpdateTableViewDynamicColumns extends Application {
private TextField firtNameField = new TextField();
private TextField lastNameField = new TextField();
private TextField emailField = new TextField();
private TextField speedField = new TextField();
private TextField stopspeedField = new TextField();
private Stage editView;
private Person fPerson;
TableView<Person> table = new TableView<Person>();;
public static class Person {
private String name;
private String skillset;
private String skills;
/**
* @return the firstName
/**
* @return the skills
*/
public String getSkills() {
return skills;
}
/**
* @param skills the skills to set
*/
public void setSkills(String skills) {
this.skills = skills;
}
/**
* @return the skillset
*/
public String getSkillset() {
return skillset;
}
/**
* @param skillset the skillset to set
*/
public void setSkillset(String skillset) {
this.skillset = skillset;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @param name the name to set
*/
public void setName(String name) {
this.name = name;
}
}
private final ObservableList<Person> data =
FXCollections.observableArrayList();
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage stage) {
Scene scene = new Scene(new Group());
stage.setTitle("Table View Sample");
stage.setWidth(535);
stage.setHeight(535);
editView = new Stage();
final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));
TableColumn firstNameCol = new TableColumn("Name");
firstNameCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("name"));
firstNameCol.setMinWidth(150);
/*
* this list contains the names of nested columns
*/
List<String> nestedColumnsNameList = new ArrayList<String>();
nestedColumnsNameList.add("Skill 1");
nestedColumnsNameList.add("Skill 2");
TableColumn skillSetCol = new TableColumn("Skillset");
skillSetCol.setMinWidth(200);
skillSetCol.setCellValueFactory(new PropertyValueFactory<Person, String>("skillset"));
for(int i=0;i<nestedColumnsNameList.size();i++){
TableColumn ageValCol = new TableColumn(nestedColumnsNameList.get(i));
ageValCol.setCellValueFactory(new PropertyValueFactory<Person, String>("skills"));
skillSetCol.getColumns().add(ageValCol);
}
int count = 3;
List<String> nameList = new ArrayList<String>();
nameList.add("Ajit Patil");
nameList.add("Ketan Mehta");
nameList.add("Jacob George");
/*
* the below list values will be set in skill columns skill1 , skill2
*/
List<String> skillList = new ArrayList<String>();
skillList.add("Java");
skillList.add("Dot net");
for(int i=0; i<nameList.size(); i++){
Person p = new Person();
p.setName(nameList.get(i));
for(int x=0; x<skillList.size();x++){
p.setSkills(skillList.get(x));
}
data.add(p);
}
table.setItems(data);
table.getColumns().addAll(firstNameCol, skillSetCol);
//--- create a edit button and a editPane to edit person
Button addButton = new Button("Add");
addButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
fPerson = null;
firtNameField.setText("");
lastNameField.setText("");
emailField.setText("");
editView.show();
}
});
Button editButton = new Button("Edit");
editButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
/*if (table.getSelectionModel().getSelectedItem() != null) {
fPerson = table.getSelectionModel().getSelectedItem();
firtNameField.setText(fPerson.getFirstName());
lastNameField.setText(fPerson.getLastName());
emailField.setText(fPerson.getEmail());
editView.show();
}*/
}
});
Button deleteButton = new Button("Delete");
deleteButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
if (table.getSelectionModel().getSelectedItem() != null) {
data.remove(table.getSelectionModel().getSelectedItem());
}
}
});
Button setButton = new Button("Set");
setButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
Stage primaryStage = new Stage();
Spinner<Double> dspinner = new Spinner<>();
dspinner.setValueFactory(new SpinnerValueFactory.DoubleSpinnerValueFactory(0.0, Double.MAX_VALUE, 0.0, 1));
dspinner.setMaxWidth(60);
Button setButton = new Button("Set");
setButton.setMinWidth(50);
GridPane grid = new GridPane();
grid.setHgap(10);
grid.setVgap(10);
grid.setPadding(new Insets(10));
grid.add(new Label("Set default speed [knots] : "), 0, 1);
grid.add(dspinner, 1, 1);
grid.add(setButton, 2, 1);
Scene scene = new Scene(grid, 300, 80);
primaryStage.setTitle("Set Default value for speed");
primaryStage.setScene(scene);
primaryStage.initModality(Modality.APPLICATION_MODAL);
primaryStage.show();
setButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
try {
setDefaultSpeed(dspinner);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void setDefaultSpeed(Spinner<Double> dspinner) {
// TODO Auto-generated method stub
}
});
}
});
HBox addEditDeleteButtonBox = new HBox();
addEditDeleteButtonBox.getChildren().addAll(addButton, editButton, deleteButton,setButton);
addEditDeleteButtonBox.setAlignment(Pos.CENTER_RIGHT);
addEditDeleteButtonBox.setSpacing(3);
GridPane editPane = new GridPane();
editPane.getStyleClass().add("editView");
editPane.setPadding(new Insets(3));
editPane.setHgap(5);
editPane.setVgap(5);
Label personLbl = new Label("Person:");
editPane.add(personLbl, 0, 1);
GridPane.setHalignment(personLbl, HPos.LEFT);
firtNameField.setPrefWidth(250);
lastNameField.setPrefWidth(250);
emailField.setPrefWidth(250);
Label firstNameLabel = new Label("First Name:");
Label lastNameLabel = new Label("Last Name:");
Label emailLabel = new Label("Email:");
Label speedLabel = new Label("Start Speed:");
Label speedLabel1 = new Label("stop Speed:");
editPane.add(firstNameLabel, 0, 3);
editPane.add(firtNameField, 1, 3);
editPane.add(lastNameLabel, 0, 4);
editPane.add(lastNameField, 1, 4);
editPane.add(emailLabel, 0, 5);
editPane.add(emailField, 1, 5);
editPane.add(speedLabel, 0, 6);
editPane.add(speedField, 1, 6);
editPane.add(speedLabel1, 0, 7);
editPane.add(stopspeedField, 1, 7);
GridPane.setHalignment(firstNameLabel, HPos.RIGHT);
GridPane.setHalignment(lastNameLabel, HPos.RIGHT);
GridPane.setHalignment(emailLabel, HPos.RIGHT);
GridPane.setHalignment(speedLabel, HPos.RIGHT);
Button saveButton = new Button("Save");
saveButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
if (fPerson == null) {
fPerson = new Person(
/*firtNameField.getText(),
lastNameField.getText(),
emailField.getText(),Double.parseDouble(speedField.getText()),Double.parseDouble(stopspeedField.getText()),""*/);
data.add(fPerson);
} else {
int k = -1;
if (data.size() > 0) {
for (int i = 0; i < data.size(); i++) {
if (data.get(i) == fPerson) {
k = i;
}
}
}
fPerson.setName(firtNameField.getText());
data.set(k, fPerson);
table.setItems(data);
// The following will work, but edited person has to be added to the button
//
// data.remove(fPerson);
// data.add(fPerson);
// add and remove refresh the table, but now move edited person to original spot,
// it failed again with the following code
// while (data.indexOf(fPerson) != k) {
// int i = data.indexOf(fPerson);
// Collections.swap(data, i, i - 1);
// }
}
editView.close();
}
});
Button cancelButton = new Button("Cancel");
cancelButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
editView.close();
}
});
TitledBorder b = new TitledBorder();
HBox saveCancelButtonBox = new HBox();
saveCancelButtonBox.getChildren().addAll(saveButton, cancelButton);
saveCancelButtonBox.setAlignment(Pos.CENTER_RIGHT);
saveCancelButtonBox.setSpacing(3);
// saveCancelButtonBox.setBorder( new Border(new BorderStroke(Color.BLUE, BorderStrokeStyle.SOLID, null, new BorderWidths(3))));
VBox editBox = new VBox();
editBox.getChildren().addAll(editPane, saveCancelButtonBox);
Scene editScene = new Scene(editBox);
editView.setTitle("Person");
editView.initStyle(StageStyle.UTILITY);
editView.initModality(Modality.APPLICATION_MODAL);
editView.setScene(editScene);
editView.close();
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.getChildren().addAll(label, table, addEditDeleteButtonBox);
vbox.setPadding(new Insets(10, 0, 0, 10));
((Group) scene.getRoot()).getChildren().addAll(vbox);
stage.setScene(scene);
stage.show();
}
}
这是我的输出：
我想填补不同的价值 - ＆gt;技能1和技能2专栏中的java和dot net。请帮助。
1 个答案:
答案 0 :(得分：1)
您想要使用多个值。因此，您无法将元素存储在单个String字段中（至少不是以方便的方式）。您需要使用支持多个值的数据类型，例如List<String>。 PropertyValueFactory无法处理此类型，因此您需要使用自定义cellValueFactory：
public static class Person {
...
private final List<String> skills = new ArrayList<>();
public List<String> getSkills() {
return skills;
}
...
}
创建列
for (int i = 0; i < nestedColumnsNameList.size(); i++) {
final int index = i;
TableColumn<Person, String> ageValCol = new TableColumn<>(nestedColumnsNameList.get(i));
// get data from list using index
ageValCol.setCellValueFactory(cellData -> Bindings.createObjectBinding(() -> cellData.getValue().getSkills().get(index)));
skillSetCol.getColumns().add(ageValCol);
}
项目创建
for (int i = 0; i < nameList.size(); i++) {
Person p = new Person();
p.setName(nameList.get(i));
p.getSkills().addAll(skillList);
data.add(p);
}
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