目标:
在表格内部下方显示数据
"Jacob", "Smith", "jacob.smith@example.com"
"Isabella", "Johnson", "isabella.johnson@example.com"
"Ethan", "Williams", "ethan.williams@example.com"
"Emma", "Jones", "emma.jones@example.com"
"Michael", "Brown", "michael.brown@example.com"
问题:
为了显示表内的数据,我缺少什么代码?
信息:
- 我是 JavaFX 新手。
- 我正在使用 netbeans
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="787.0" prefWidth="1086.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<top>
<MenuBar BorderPane.alignment="CENTER">
<menus>
<Menu mnemonicParsing="false" text="File">
<items>
<MenuItem mnemonicParsing="false" text="Close" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Edit">
<items>
<MenuItem mnemonicParsing="false" text="Delete" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Help">
<items>
<MenuItem mnemonicParsing="false" text="About" />
</items>
</Menu>
</menus>
</MenuBar>
</top>
<center>
<TableView id="ttt" prefHeight="200.0" prefWidth="200.0" BorderPane.alignment="CENTER">
<columns>
<TableColumn id="firstNameCol" prefWidth="124.0" text="First name" />
<TableColumn id="lastNameCol" prefWidth="139.0" text="Last name" />
<TableColumn id="emailCol" minWidth="7.0" prefWidth="197.0" text="Email" />
<TableColumn id="addressCol" prefWidth="105.0" text="Address" />
<TableColumn id="zipcodeCol" prefWidth="100.0" text="Zipcode" />
<TableColumn id="cityCol" prefWidth="204.0" text="City" />
</columns>
</TableView>
</center>
</BorderPane>
package dreamcrm;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXMLLoader;
import javafx.scene.Group;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.TableView;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class DreamCRM extends Application {
private TableView<Person> table = new TableView<Person>();
private final ObservableList<Person> data =
FXCollections.observableArrayList(
new Person("Jacob", "Smith", "jacob.smith@example.com"),
new Person("Isabella", "Johnson", "isabella.johnson@example.com"),
new Person("Ethan", "Williams", "ethan.williams@example.com"),
new Person("Emma", "Jones", "emma.jones@example.com"),
new Person("Michael", "Brown", "michael.brown@example.com")
);
@Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
package dreamcrm;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
public class FXMLDocumentController implements Initializable {
@FXML
private Label label;
@FXML
private void handleButtonAction(ActionEvent event) {
System.out.println("You clicked me!");
label.setText("Hello World!");
}
@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
}
package dreamcrm;
import javafx.beans.property.SimpleStringProperty;
public class Person {
private final SimpleStringProperty firstName;
private final SimpleStringProperty lastName;
private final SimpleStringProperty email;
public Person(String fName, String lName, String email) {
this.firstName = new SimpleStringProperty(fName);
this.lastName = new SimpleStringProperty(lName);
this.email = new SimpleStringProperty(email);
}
public String getFirstName() {
return firstName.get();
}
public void setFirstName(String fName) {
firstName.set(fName);
}
public String getLastName() {
return lastName.get();
}
public void setLastName(String fName) {
lastName.set(fName);
}
public String getEmail() {
return email.get();
}
public void setEmail(String fName) {
email.set(fName);
}
}
最佳答案
为此,您需要使用 fx:id
而不是 id
。 fx:id
仍然适用于 CSS 选择器,所以不用担心。
正如 @fabian 指出的,我错过了,您还需要在 fxml 文件中添加 fx:controller
,以便它知道什么将控制它。
在您的文档 Controller 中,您需要让它知道它正在使用 @FXML
从您的 fxml 文档中获取一些信息
就这样,
@FXML
private TableView ttt;
@FXML
private TableColumn<Person, String> firstNameCol, lastNameCol, emailCol,addressCol, zipCol, cityCol;
在这里,您使用 fx:id
作为变量名称。
然后,在您的 initialize
函数中,您需要设置 cellValueFactory
,如下所示。
@FXML
public void initialize(){
firstNamecol.setCellValueFactory(cellData -> cellData.getValue().firstNameProperty());
//etc..
//Don't forget to add your list that you made to the tableview
ttt.setItems(list);
}
添加 ObservableList
后,您现在可以添加和删除项目,并且它应该相应更新。
在相关说明中,您需要将 SimpleStringProperty
作为可返回值,即
public StringProperty firstNameProperty(){
return firstName;
}
这应该可以帮助您入门。
关于java - 缺少显示表内数据的代码,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40002308/