JavaFX自定义控件（TextField）无法正常工作 [英] JavaFX custom control (TextField) not working

问题描述

我正在尝试使用JavaFX和SceneBuilder 1.1进行自定义控件。

I am trying to make a custom control with JavaFX and SceneBuilder 1.1.

我有这段代码：

FXML

<?import libreria.javaFX.componentes.componenteTextField.*?>

<AnchorPane id="AnchorPane" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml">
  <children>
    <CustomComponent fx:id="pastaTxt" layoutX="69.0" layoutY="87.0" prefWidth="200.0" />
  </children>
</AnchorPane>

CustomComponent.java

CustomComponent.java

package libreria.javaFX.componentes.componenteTextField;

import javafx.scene.control.TextField;

public class CustomComponent extends TextField {

public CustomComponent() {
    super();
    // TODO Auto-generated constructor stub
}

public CustomComponent(String arg0) {
    super(arg0);
    // TODO Auto-generated constructor stub
}

}

当我尝试从SceneBuilder打开它时，它告诉我：

When I try to open it from SceneBuilder it tells me this:

缺少的类型是：[CustomComponent]

Missing types are: [CustomComponent]

它让我有机会指定Classpath（也不解决问题）。

and it gives me the chance to specify the Classpath (which doesn't fix the problem either).

我也尝试将类放在import语句中，如下所示：

I tried putting the class at the import statement too, like this:

<?import libreria.javaFX.componentes.componenteTextField.CustomComponent?>

但是它给出了 ClassNotFoundException 。

关于为什么会发生这种情况的任何想法？

Any ideas about why is this happening?

更多信息

我用这些类完成了一个新项目：

I have done a new project with just these classes:

代码如下：

CustomControl.fxml

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

<?import custom.CustomControl?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.paint.*?>
<?scenebuilder-classpath-element ../../bin/custom?>

<AnchorPane id="AnchorPane" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml">
  <children>
    <CustomControl layoutX="51.0" layoutY="100.0" prefWidth="200.0" />
  </children>
</AnchorPane>

CustomControl.java

package custom;

import javafx.scene.control.TextField;

public class CustomControl extends TextField {

    public CustomControl() {
        super();
    }

public CustomControl(String arg0) {
    super(arg0);

    }
}

我仍有同样的问题。我用对话框指定了类路径，一切似乎都适合我但是我在打开SceneBuilder时遇到了同样的错误。

And I still have the same problem. I specify the classpath with the dialog, everything seems right to me but I have the same errors opening the SceneBuilder.

最新信息

尝试接近解决方案，我们在Eclipse下尝试了这个项目。结果是Eclipse显示窗口正常，但SceneBuilder继续这些错误。我希望这条线索有所帮助。

如果有人在Scene Builder下完成了这种自定义控件定义，请告诉我们并给我们一个例如，它对我们的项目非常有用。

推荐答案

这是由于未指定正确的类路径引起的，这允许java运行时运行场景构建器加载控件类。

This is caused by not specifying the correct classpath, which allows the java runtime running scene builder to load the control classes.

如果您正在运行eclipse并且您的类具有命名空间 custom.MyControl 然后指定bin目录而不是自定义目录。在maven项目中，您需要指定目标/类目录。

If you are running eclipse and your class has the namespace custom.MyControl then specify the bin directory and not the custom directory. In a maven project you need to specify the target/classes directory.

在此处查看我自己项目中的示例： https://bitbucket.org/atill/estimate/src/22390a2ca034b55f1916e46435b714e5c489b90e/src /main/resources/projmon/gui/workTree.fxml?at=master

See an example in my own project here: https://bitbucket.org/atill/estimate/src/22390a2ca034b55f1916e46435b714e5c489b90e/src/main/resources/projmon/gui/workTree.fxml?at=master

相对文件路径通常由场景构建器创建，因此移动文件将会中断类路径，你需要重新指定它。

A relative file path is often created by scene builder so moving files will break the class path and you will need to respecify it.

这篇关于JavaFX自定义控件（TextField）无法正常工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！