我刚刚开始使用JavaFX。我创建了一个包含3列的TableView(名称,姓氏和选择)。最后一个是Checkbox列。这是我的代码:
PersonTableController.java:
package ch.makery.sortfilter;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.collections.transformation.FilteredList;
import javafx.collections.transformation.SortedList;
import javafx.fxml.FXML;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
/**
* View-Controller for the person table.
*
* @author Marco Jakob
*/
public class PersonTableController {
@FXML
private TextField filterField;
@FXML
private TableView<Person> personTable;
@FXML
private TableColumn<Person, String> firstNameColumn;
@FXML
private TableColumn<Person, String> lastNameColumn;
@FXML
private TableColumn<Person, String> selectColumn;
private ObservableList<Person> masterData = FXCollections.observableArrayList();
/**
* Just add some sample data in the constructor.
*/
public PersonTableController() {
masterData.add(new Person("Hans", "Muster"));
masterData.add(new Person("Ruth", "Mueller"));
masterData.add(new Person("Heinz", "Kurz"));
masterData.add(new Person("Cornelia", "Meier"));
masterData.add(new Person("Werner", "Meyer"));
masterData.add(new Person("Lydia", "Kunz"));
masterData.add(new Person("Anna", "Best"));
masterData.add(new Person("Stefan", "Meier"));
masterData.add(new Person("Martin", "Mueller"));
}
/**
* Initializes the controller class. This method is automatically called
* after the fxml file has been loaded.
*
* Initializes the table columns and sets up sorting and filtering.
*/
@FXML
private void initialize() {
// 0. Initialize the columns.
firstNameColumn.setCellValueFactory(cellData -> cellData.getValue().firstNameProperty());
lastNameColumn.setCellValueFactory(cellData -> cellData.getValue().lastNameProperty());
selectColumn.setCellValueFactory(
new PropertyValueFactory<Person,String>("select")
);
// 1. Wrap the ObservableList in a FilteredList (initially display all data).
FilteredList<Person> filteredData = new FilteredList<>(masterData, p -> true);
// 2. Set the filter Predicate whenever the filter changes.
filterField.textProperty().addListener((observable, oldValue, newValue) -> {
filteredData.setPredicate(person -> {
// If filter text is empty, display all persons.
if (newValue == null || newValue.isEmpty()) {
return true;
}
// Compare first name and last name of every person with filter text.
String lowerCaseFilter = newValue.toLowerCase();
if (person.getFirstName().toLowerCase().indexOf(lowerCaseFilter) != -1) {
return true; // Filter matches first name.
} else if (person.getLastName().toLowerCase().indexOf(lowerCaseFilter) != -1) {
return true; // Filter matches last name.
}
return false; // Does not match.
});
});
// 3. Wrap the FilteredList in a SortedList.
SortedList<Person> sortedData = new SortedList<>(filteredData);
// 4. Bind the SortedList comparator to the TableView comparator.
// Otherwise, sorting the TableView would have no effect.
sortedData.comparatorProperty().bind(personTable.comparatorProperty());
// 5. Add sorted (and filtered) data to the table.
personTable.setItems(sortedData);
}
}
Person.java:
package ch.makery.sortfilter;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.scene.control.CheckBox;
/**
* Simple model class for the person table.
*
* @author Marco Jakob
*/
public class Person {
private final StringProperty firstName;
private final StringProperty lastName;
private CheckBox selec = new CheckBox();
public Person(String firstName, String lastName) {
this.firstName = new SimpleStringProperty(firstName);
this.lastName = new SimpleStringProperty(lastName);
}
public String getFirstName() {
return firstName.get();
}
public void setFirstName(String firstName) {
this.firstName.set(firstName);
}
public StringProperty firstNameProperty() {
return firstName;
}
public String getLastName() {
return lastName.get();
}
public void setLastName(String lastName) {
this.lastName.set(lastName);
}
public StringProperty lastNameProperty() {
return lastName;
}
public CheckBox getSelect() {
return select;
}
public void setSelect(CheckBox select) {
this.select = select;
}
}
PersonTable.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane minWidth="315.0" prefHeight="300.0" prefWidth="315.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="ch.makery.sortfilter.PersonTableController">
<children>
<TableView fx:id="personTable" prefHeight="-1.0" prefWidth="-1.0" tableMenuButtonVisible="false" AnchorPane.bottomAnchor="10.0" AnchorPane.leftAnchor="10.0" AnchorPane.rightAnchor="10.0" AnchorPane.topAnchor="40.0">
<columns>
<TableColumn fx:id="firstNameColumn" maxWidth="5000.0" minWidth="10.0" prefWidth="120.0" text="First Name" />
<TableColumn fx:id="lastNameColumn" maxWidth="5000.0" minWidth="10.0" prefWidth="120.0" text="Last Name" />
<TableColumn fx:id="selectColumn" maxWidth="5000.0" minWidth="10.0" prefWidth="120.0" text="Select" />
</columns>
<columnResizePolicy>
<TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
</columnResizePolicy>
</TableView>
<HBox id="HBox" alignment="CENTER" spacing="5.0" AnchorPane.leftAnchor="10.0" AnchorPane.rightAnchor="10.0" AnchorPane.topAnchor="10.0">
<children>
<Label text="Filter Table:" />
<TextField fx:id="filterField" prefWidth="-1.0" HBox.hgrow="ALWAYS" />
</children>
</HBox>
</children>
</AnchorPane>
我想要的不仅仅是当时可以选择一个人,因此尝试添加事件或监听器是不成功的。如果选中任何复选框并且用户选中其中一个,则表示正常。但如果选中了一个复选框并同时选中了其他复选框,则必须取消选中第一个复选框,就像RadioButton一样。
有人可以帮助我吗?
祝你好运
答案 0 :(得分:1)
谢谢@James_D。
最后我可以实现“just-one”复选框选择。我按照这个例子告诉你:
javafx-checkboxtablecell-get-actionevent-when-user-check-a-checkbox
我将此代码添加到调用事件:
checkedCol.setCellFactory(CheckBoxTableCell.forTableColumn(new Callback<Integer,
ObservableValue<Boolean>>() {
@Override
public ObservableValue<Boolean> call(Integer param) {
System.out.println("Cours "+coursData.get(param).getCours()+" changed value to " +coursData.get(param).isChecked());
for (Integer i = 0; i < coursData.size(); i++) {
if (i != param && coursData.get(param).isChecked()) {
coursData.get(i).setChecked(false);
} // if
} // for
return coursData.get(param).checkedProperty();
}
}));
在for cicle中,我取消选中表格中的其余复选框。
非常感谢您的帮助。
最诚挚的问候。
利奥。