SceneBuilder自定义控件类路径

Question

>

我是使用fx:root，还是不使用它？我选择用它。所以在控件的controller+root类中，我将自己设置为root和controller，就像需要的那样。但它仍然说“root尚未设置。在加载之前使用setRoot（）方法。”

在包含自定义控件的父FXML中，我应该导入什么？

正确的类路径是什么，以便我可以在SceneBuilder2.0中显示我的自定义控件？我根本不太明白“/.../.../.../bin”这件事。

<?xml version="1.0" encoding="UTF-8"?>

<?import java.lang.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.HBox?>


<fx:root type="HBox" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8">
   <children>
      <ProgressBar fx:id="progressBar" prefWidth="200.0" progress="0.0" />
   </children>
</fx:root>

package application.ctrl;

import java.io.IOException;

import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.layout.HBox;
import application.Main;

public class ProgressSelector extends HBox {

    @FXML
    private ProgressIndicator progressBar;



    public ProgressSelector() {
        FXMLLoader loader = new FXMLLoader(getClass().getResource(
                Main.PROGRESS_SELECTOR));
        loader.setRoot(this);
        loader.setController(this);
        loader.setClassLoader(this.getClass().getClassLoader());
        try {
            loader.load();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.text.*?>
<?import javafx.geometry.*?>
<?import java.lang.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.VBox?>
<?import application.ctrl.ProgressSelector?>

<VBox fx:id="vbox" spacing="5.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.ctrl.ObjectiveEditorCtrl">
   <children>
      <HBox>
         <children>
            <Button mnemonicParsing="false" onAction="#back" text="&lt;" />
            <Label text="Editing Objective:" />
         </children>
      </HBox>
      <TextField fx:id="objectiveName" />
      <ProgressSelector />
      <HBox>
         <children>
            <Label text="Planned Start:" />
            <Region HBox.hgrow="ALWAYS" />
            <DatePicker fx:id="plannedStart" />
         </children>
      </HBox>
      <HBox>
         <children>
            <Label text="Actual Start:" />
            <Region HBox.hgrow="ALWAYS" />
            <DatePicker fx:id="actualStart" />
         </children>
      </HBox>
      <HBox>
         <children>
            <Label text="Planned Finish:" />
            <Region HBox.hgrow="ALWAYS" />
            <DatePicker fx:id="plannedFinish" />
         </children>
      </HBox>
      <HBox>
         <children>
            <Label text="Actual Finish:" />
            <Region HBox.hgrow="ALWAYS" />
            <DatePicker fx:id="actualFinish" />
         </children>
      </HBox>
      <HBox alignment="CENTER_RIGHT">
         <children>
            <Button mnemonicParsing="false" onAction="#save" text="Save" />
            <Button mnemonicParsing="false" onAction="#back" text="Cancel" />
         </children>
      </HBox>
   </children>
   <padding>
      <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
   </padding>
</VBox>

其控制器：

package application.ctrl;

import interfaces.ControlledScreenInterface;

import java.net.URL;
import java.util.ResourceBundle;

import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.DatePicker;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import application.ScreenController;
import application.objects.Objective;

public class ObjectiveEditorCtrl implements Initializable,
        ControlledScreenInterface {

    @FXML
    private TextField objectiveName;
    @FXML
    private ProgressSelector completion;
    @FXML
    private DatePicker plannedStart;
    @FXML
    private DatePicker plannedFinish;
    @FXML
    private DatePicker actualStart;
    @FXML
    private DatePicker actualFinish;
    @FXML
    private VBox vbox;

    private ScreenController parent;
    private Objective current;



    @Override
    public void initialize(URL location, ResourceBundle resources) {
        // TODO Auto-generated method stub

    }



    public void init(Objective current) {
        this.current = current;
        objectiveName.setText(current.getName());
        // completion.setProgress(current.getCompletion());
        plannedStart.setValue(current.getPlannedStart());
        actualStart.setValue(current.getActualStart());
        plannedFinish.setValue(current.getPlannedFinish());
        actualFinish.setValue(current.getActualFinish());
    }



    public void save() {
        // current.setName(objectiveName.getText());
        // // current.setCompletion(completion.getProgress());
        // current.setPlannedStart(plannedStart.getValue());
        // current.setPlannedFinish(plannedFinish.getValue());
        // current.setActualStart(actualStart.getValue());
        // current.setActualFinish(actualFinish.getValue());
        // back();
    }



    public void back() {
        parent.back();
    }



    @Override
    public void setParentScreen(ScreenController parent) {
        this.parent = parent;
    }
}

Answer 1

这里有很多问题。

1-使用fx：root允许您自定义FXMLLoader，您可以改变实例化组件的方式：如何用不同的fxml文件创建多个javafx控制器？

但是，在SceneBuilder2中，它并不能很好地工作！Scene Builder 2的“规范”方式（与1配合得很好）似乎不使用fx：root。