JavaFX 表格单元格编辑
2022-09-03 01:41:49
我正在尝试用Java制作一个程序来管理我的博彩公司帐户。我是Java的新手,所以我想我会选择一些简单的东西来看看事情是如何工作的。我决定使用表格视图并使各个单元格可编辑。我一直在学习本教程 http://java-buddy.blogspot.co.uk/2012/04/javafx-2-editable-tableview.html。它详细介绍了如何使用java代码来做到这一点,并将其复制到一个新类中可以完美地工作。我决定尝试调整它以与FXML配合使用,因为我喜欢Sceneviewer。我的问题是,数据被加载到表中,但是当我单击/双击单元格时,没有任何反应。这是我的代码。
测试控制器.java
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.*;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.util.Callback;
import java.net.URL;
import java.util.ResourceBundle;
public class testController implements Initializable {
@FXML
private TableColumn<Account, String> usernameCol;
@FXML
private TableColumn<Account, String> balanceCol;
@FXML
private TableView<Account> accountTable;
@FXML
private TableColumn<Account, String> bookieCol;
@FXML
private TableColumn<Account, String> passwordCol;
private ObservableList<Account> dataList =
FXCollections.observableArrayList(
new Account("bookie", "username", "password", "0"));
@Override
public void initialize(URL location, ResourceBundle resources) {
Callback<TableColumn, TableCell> cellFactory =
new Callback<TableColumn, TableCell>() {
public TableCell call(TableColumn p) {
return new EditingCell();
}
};
bookieCol.setCellValueFactory(
new PropertyValueFactory<>("fieldBookie"));
usernameCol.setCellValueFactory(
new PropertyValueFactory<>("fieldUsername"));
usernameCol.setOnEditCommit(
new EventHandler<TableColumn.CellEditEvent<Account, String>>() {
@Override public void handle(TableColumn.CellEditEvent<Account, String> t) {
((Account)t.getTableView().getItems().get(
t.getTablePosition().getRow())).setFieldUsername(t.getNewValue());
}
});
passwordCol.setCellValueFactory(
new PropertyValueFactory<Account, String>("fieldPassword"));
balanceCol.setCellValueFactory(
new PropertyValueFactory<Account, String>("fieldBalance"));
accountTable.setItems(dataList);
}
class EditingCell extends TableCell<Account, String> {
private TextField textField;
public EditingCell() {
}
@Override
public void startEdit() {
super.startEdit();
if (textField == null) {
createTextField();
}
setGraphic(textField);
setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
textField.selectAll();
}
@Override
public void cancelEdit() {
super.cancelEdit();
setText(String.valueOf(getItem()));
setContentDisplay(ContentDisplay.TEXT_ONLY);
}
@Override
public void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
setGraphic(textField);
} else {
if (isEditing()) {
if (textField != null) {
textField.setText(getString());
}
setGraphic(textField);
setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
} else {
setText(getString());
setContentDisplay(ContentDisplay.TEXT_ONLY);
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap() * 2);
textField.setOnKeyPressed(t -> {
if (t.getCode() == KeyCode.ENTER) {
commitEdit(textField.getText());
} else if (t.getCode() == KeyCode.ESCAPE) {
cancelEdit();
}
});
}
private String getString() {
return getItem() == null ? "" : getItem();
}
}
}
这是我的帐户.java文件。
import javafx.beans.property.SimpleStringProperty;
public class Account {
private SimpleStringProperty fieldBookie;
private SimpleStringProperty fieldUsername;
private SimpleStringProperty fieldPassword;
private SimpleStringProperty fieldBalance;
Account(String fbookie, String fusername, String fpassword, String fbalance){
this.fieldBookie = new SimpleStringProperty(fbookie);
this.fieldUsername = new SimpleStringProperty(fusername);
this.fieldPassword = new SimpleStringProperty(fpassword);
this.fieldBalance = new SimpleStringProperty(fbalance);
}
public String getFieldBookie() {
return fieldBookie.get();
}
public String getFieldUsername() {
return fieldUsername.get();
}
public String getFieldPassword() {
return fieldPassword.get();
}
public String getFieldBalance() {
return fieldBalance.get();
}
public void setFieldBookie(String fBookie) {
fieldBookie.set(fBookie);
}
public void setFieldUsername(String fUsername) {
fieldUsername.set(fUsername);
}
public void setFieldPassword(String fPassword) {
fieldUsername.set(fPassword);
}
public void setFieldBalance(String fBalance) {
fieldUsername.set(fBalance);
}
}
最后,这是我的fxml文件。
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.*?>
<?import javafx.scene.canvas.*?>
<?import java.lang.*?>
<?import javafx.scene.*?>
<Group xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="testController">
<children>
<TableView fx:id="accountTable" editable="true" prefHeight="291.0" prefWidth="302.0">
<columns>
<TableColumn fx:id="bookieCol" prefWidth="75.0" text="Bookie" />
<TableColumn fx:id="usernameCol" prefWidth="75.0" text="Username" />
<TableColumn fx:id="passwordCol" prefWidth="75.0" text="Password" />
<TableColumn fx:id="balanceCol" prefWidth="75.0" text="Balance" />
</columns>
</TableView>
</children>
</Group>
正如我之前所说,当我单击用户名单元格时没有任何反应。没有错误,没有文本字段,什么都没有。任何帮助将不胜感激!谢谢