在JavaFX对话框中获取两个以上的输入 [英] Get more than two inputs in a JavaFX Dialog
问题描述
我尝试构建文本对话框，用户输入事件名称，事件大小和所选场地。
我的问题在于如何收集输入数据;这里到目前为止我做了什么：
eventName = new TextField（）;
eventSize = new TextField（）;
ObservableList< Venue> options =
FXCollections.observableArrayList（model.getVenuesList（））;
VeunueList = new ComboBox< Venue>（选项）;
我创建了一个封装所有输入的类：
public class MyResult {
String eventname;
String eventsize;
场地;
}
我将变量定义为类的对象 Myresult ：
private Dialog< MyResult>对话;
private可选< MyResult> EventInput;
问题是如何在结果转换器中写入return语句;它给了我错误：
dialog.setResultConverter（dialogButton - > {
if（dialogButton == submit）{
返回新的MyResult（eventName.getText（），eventSize.getText（），VeunueList.getValue（））
}
返回null;
}）;
EventInput = dialog.showAndWait（）;
目前还不清楚你的片段出错的地方，但是这些类型更正为
控制台： 姓名2017-05-24其他地方
import java.time.LocalDate ;
import java.util.Optional;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.control.ButtonType;
import javafx.scene.control.ComboBox;
import javafx.scene.control.DatePicker;
import javafx.scene.control.Dialog;
import javafx.scene.control.DialogPane;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
/ **
* @see http://stackoverflow.com/q/44147595/230513
* @see http://www.javaworld.com/article/ 2991463 /
* /
公共类DialogTest扩展Application {
@Override
public void start（Stage primaryStage）{
Dialog< Results> dialog = new Dialog<>（）;
dialog.setTitle（对话测试）;
dialog.setHeaderText（请指定......）;
DialogPane dialogPane = dialog.getDialogPane（）;
dialogPane.getButtonTypes（）。addAll（ButtonType.OK，ButtonType.CANCEL）;
TextField textField = new TextField（Name）;
DatePicker datePicker = new DatePicker（LocalDate.now（））;
ObservableList< Venue> options =
FXCollections.observableArrayList（Venue.values（））;
ComboBox< Venue> comboBox = new ComboBox<>（options）;
comboBox.getSelectionModel（）。selectFirst（）;
dialogPane.setContent（new VBox（8，textField，datePicker，comboBox））;
Platform.runLater（textField :: requestFocus）;
dialog.setResultConverter（（ButtonType按钮） - > {
if（button == ButtonType.OK）{
返回新结果（textField.getText（），
datePicker。 getValue（），comboBox.getValue（））;
}
返回null;
}）;
可选<结果> optionalResult = dialog.showAndWait（）;
optionalResult.ifPresent（（Results results） - > {
System.out.println（
results.text ++ results.date ++ results.venue）;
}）;
}
private static enum Venue {Here，There，Elsewhere}
private static class Results {
String text;
LocalDate日期;
场地;
公共结果（字符串名称，LocalDate日期，场地地点）{
this.text = name;
this.date = date;
this.venue =场地;
}
}
public static void main（String [] args）{
launch（args）;
}
}
I trying to build the text dialog where the user enter the event name, event size, and the selected the venue.
My problem is in how can I gather the inputs; here what I did so far:
eventName = new TextField();
eventSize = new TextField();
ObservableList<Venue> options =
FXCollections.observableArrayList(model.getVenuesList());
VeunueList = new ComboBox<Venue>(options);
I create a class that encapsulate all my inputs:
public class MyResult {
String eventname;
String eventsize;
Venue venue;
}
I define the variable to be object of class Myresult:
private Dialog<MyResult> dialog ;
private Optional<MyResult> EventInput;
The problem is how to write return statement in the result converter; it gives me error:
dialog.setResultConverter(dialogButton -> {
if (dialogButton == submit) {
return new MyResult(eventName.getText(),eventSize.getText(),VeunueList.getValue())
}
return null;
});
EventInput = dialog.showAndWait();
It's not clear where your fragment goes awry, but getting the types correct for a call to setResultConverter() is sometimes problematical. The example below illustrates a Dialog that collects inputs from TextField, DatePicker and ComboBox<Venue>. In the ComboBox<Venue>, the choice of Venue comes from an enum, and the corresponding ComboBox model is constructed using the enum's implicit values() method. The resultConverter property's Callback returns a new instance of Results having the current values of the various view components. The Optional<Results> show those values ifPresent(). Some related examples may be found here and in the tutorial, JavaFX improvements in Java SE 8u40.
Console: Name 2017-05-24 Elsewhere
import java.time.LocalDate;
import java.util.Optional;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.control.ButtonType;
import javafx.scene.control.ComboBox;
import javafx.scene.control.DatePicker;
import javafx.scene.control.Dialog;
import javafx.scene.control.DialogPane;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
/**
* @see http://stackoverflow.com/q/44147595/230513
* @see http://www.javaworld.com/article/2991463/
*/
public class DialogTest extends Application {
@Override
public void start(Stage primaryStage) {
Dialog<Results> dialog = new Dialog<>();
dialog.setTitle("Dialog Test");
dialog.setHeaderText("Please specify…");
DialogPane dialogPane = dialog.getDialogPane();
dialogPane.getButtonTypes().addAll(ButtonType.OK, ButtonType.CANCEL);
TextField textField = new TextField("Name");
DatePicker datePicker = new DatePicker(LocalDate.now());
ObservableList<Venue> options =
FXCollections.observableArrayList(Venue.values());
ComboBox<Venue> comboBox = new ComboBox<>(options);
comboBox.getSelectionModel().selectFirst();
dialogPane.setContent(new VBox(8, textField, datePicker, comboBox));
Platform.runLater(textField::requestFocus);
dialog.setResultConverter((ButtonType button) -> {
if (button == ButtonType.OK) {
return new Results(textField.getText(),
datePicker.getValue(), comboBox.getValue());
}
return null;
});
Optional<Results> optionalResult = dialog.showAndWait();
optionalResult.ifPresent((Results results) -> {
System.out.println(
results.text + " " + results.date + " " + results.venue);
});
}
private static enum Venue {Here, There, Elsewhere}
private static class Results {
String text;
LocalDate date;
Venue venue;
public Results(String name, LocalDate date, Venue venue) {
this.text = name;
this.date = date;
this.venue = venue;
}
}
public static void main(String[] args) {
launch(args);
}
}
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