在 javafx 中从另一个 window 设置 TextField 的值
Set value of TextField from another window in javafx
我在 Action(按回车键)上设置了一个 TextField 以打开另一个显示 table 选项(数百个选项)的 fxml window。基本上我需要第二个 window 在第一个 window.
上设置文本字段的文本
@FXML //this pops out a 2nd window where i can choose a person. Set from Scene Builder
private void pickperson(ActionEvent event) throws IOException {
Parent parent = FXMLLoader.load(getClass().getResource("/fxml/personpicker.fxml"));
Scene scene = new Scene(parent);
Stage stage = new Stage();
stage.setScene(scene);
stage.centerOnScreen();
stage.show();
}
@FXML //when i click "use selected" this gets executed
private void use(ActionEvent event) {
Person person0 = table.getSelectionModel().getSelectedItem();
int id = person0.getId();
String name = person0.getNAME();
final Clipboard clipboard = Clipboard.getSystemClipboard();
final ClipboardContent content = new ClipboardContent();
content.putString(Integer.toString(id)); //i tried clipboard but when i paste, nothing is pasted
Stage stage = (Stage) useselected.getScene().getWindow();//closes the window
stage.close();
}
我在 2 号 window 有一个 table,按钮标记为:"use selected"。我想让它在单击 "use selected" 时关闭 window,同时从选择中设置文本字段。
编辑:
我通过添加
让剪贴板工作
Clipboard.getSystemClipboard().setContent(content);
现在,我只需要在 window 关闭后直接粘贴值即可;就像按下 CRTL+V 一样。
根据您的代码,"parent" Stage
,即包含 TextField
的代码是显示三个按钮的 Stage
的所有者。因此,您只需调用子 Stage
中的方法 getOwner()
即可访问父 Stage
。一旦您获得对父级 Stage
的引用,您就可以访问其节点并对其进行操作。
我只更改了你代码中的两个文件。
Parent.fxml
- 我将 id 属性添加到 TextField
.
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="266.0" prefWidth="394.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="test.ParentController">
<children>
<TextField id="txtFld" layoutX="123.0" layoutY="121.0" onAction="#picker" />
<Label layoutX="140.0" layoutY="86.0" text="Press enter to choose" />
</children>
</AnchorPane>
ChildController.java
- 我添加了方法 handleEvent(int)
package test;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;
public class ChildController implements Initializable {
@FXML
AnchorPane ap;
@FXML
private Button btnone;
@FXML
private Button btntwo;
@FXML
private Button btnthree;
@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
@FXML
private void one(ActionEvent event) {
handleEvent(1);
}
@FXML
private void two(ActionEvent event) {
handleEvent(2);
}
@FXML
private void three(ActionEvent event) {
handleEvent(3);
}
private void handleEvent(int chosenNumber) {
Stage stage = (Stage) ap.getScene().getWindow();
Stage owner = (Stage) stage.getOwner();
Scene scene = owner.getScene();
Parent root = scene.getRoot();
TextField txtFld = (TextField) root.lookup("#txtFld");
txtFld.setText(String.valueOf(chosenNumber));
stage.close();
}
}
我在 Action(按回车键)上设置了一个 TextField 以打开另一个显示 table 选项(数百个选项)的 fxml window。基本上我需要第二个 window 在第一个 window.
上设置文本字段的文本@FXML //this pops out a 2nd window where i can choose a person. Set from Scene Builder
private void pickperson(ActionEvent event) throws IOException {
Parent parent = FXMLLoader.load(getClass().getResource("/fxml/personpicker.fxml"));
Scene scene = new Scene(parent);
Stage stage = new Stage();
stage.setScene(scene);
stage.centerOnScreen();
stage.show();
}
@FXML //when i click "use selected" this gets executed
private void use(ActionEvent event) {
Person person0 = table.getSelectionModel().getSelectedItem();
int id = person0.getId();
String name = person0.getNAME();
final Clipboard clipboard = Clipboard.getSystemClipboard();
final ClipboardContent content = new ClipboardContent();
content.putString(Integer.toString(id)); //i tried clipboard but when i paste, nothing is pasted
Stage stage = (Stage) useselected.getScene().getWindow();//closes the window
stage.close();
}
我在 2 号 window 有一个 table,按钮标记为:"use selected"。我想让它在单击 "use selected" 时关闭 window,同时从选择中设置文本字段。
编辑: 我通过添加
让剪贴板工作Clipboard.getSystemClipboard().setContent(content);
现在,我只需要在 window 关闭后直接粘贴值即可;就像按下 CRTL+V 一样。
根据您的代码,"parent" Stage
,即包含 TextField
的代码是显示三个按钮的 Stage
的所有者。因此,您只需调用子 Stage
中的方法 getOwner()
即可访问父 Stage
。一旦您获得对父级 Stage
的引用,您就可以访问其节点并对其进行操作。
我只更改了你代码中的两个文件。
Parent.fxml
- 我将 id 属性添加到TextField
.
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="266.0" prefWidth="394.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="test.ParentController">
<children>
<TextField id="txtFld" layoutX="123.0" layoutY="121.0" onAction="#picker" />
<Label layoutX="140.0" layoutY="86.0" text="Press enter to choose" />
</children>
</AnchorPane>
ChildController.java
- 我添加了方法handleEvent(int)
package test;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;
public class ChildController implements Initializable {
@FXML
AnchorPane ap;
@FXML
private Button btnone;
@FXML
private Button btntwo;
@FXML
private Button btnthree;
@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
@FXML
private void one(ActionEvent event) {
handleEvent(1);
}
@FXML
private void two(ActionEvent event) {
handleEvent(2);
}
@FXML
private void three(ActionEvent event) {
handleEvent(3);
}
private void handleEvent(int chosenNumber) {
Stage stage = (Stage) ap.getScene().getWindow();
Stage owner = (Stage) stage.getOwner();
Scene scene = owner.getScene();
Parent root = scene.getRoot();
TextField txtFld = (TextField) root.lookup("#txtFld");
txtFld.setText(String.valueOf(chosenNumber));
stage.close();
}
}