创建一个Mousebirdner到Javafx矩形 [英] Creating a Mouselistner to Javafx rectangle

问题描述

我想在我的javafx矩形上创建一个mouselistner。

I want to create a mouselistner on my javafx rectangle.

我想按下它时矩形必须改变颜色吗？

the idea is that the rectangle has to change color when i press it?

有没有人知道如何在Javafx中为形状添加一个列表器？

Does anyone know how to add a listner to shapes in Javafx?

到目前为止我已经尝试过：

so far ive tried this:

    final Rectangle rect = new Rectangle();

        rect.setOnMouseClicked(new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent event) {
                // TODO Auto-generated method stub

            }
        });

然而我收到错误消息说

方法setOnMouseClicked（new EventHandler（）{}）
未定义类型Rectangle

the method setOnMouseClicked(new EventHandler(){}) is undefined for the type Rectangle

升级更多信息：

我对rect的唯一选择是：

The only options i have for rect are these:

rect.add()
rect.contains()
rect.grow();
rect.hashcode()
rect.intersection();

以及其他一些不重要的。

and a few others of no importance.

我正在使用的导入如下：

The import i am using are the following:

import com.sun.glass.events.MouseEvent;
import com.sun.javafx.geom.Rectangle;
import com.sun.javafx.geom.Shape;

推荐答案

您的代码看起来正确并且匹配我能找到的任何示例。为了证明这一点，我举了一个简单的例子：

Your code looks correct and matches any examples I can find. To demonstrate this I have thrown together a quick example:

public class JavaFXApplication extends Application {

    Rectangle rect = new Rectangle(100,100);

    @Override
    public void start(Stage primaryStage) {
        rect.setFill(Color.BLUE);

        rect.setOnMouseClicked(new EventHandler<MouseEvent>()
        {
            @Override
            public void handle(MouseEvent t) {
                rect.setFill(Color.RED);
            }
        });


        StackPane root = new StackPane();
        root.getChildren().add(rect);

        Scene scene = new Scene(root, 300, 250);

        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

单击矩形时，颜色会从蓝色变化红色。

When the rectangle is clicked, the colour changes from blue to red.

这可能是一个长镜头，但请确保从<$引用 Rectangle 类型c $ c> JavaFX 库而不是 AWT 矩形，即确保导入为：

This might be a long shot but make sure you are referencing the Rectangle type from the JavaFX library and not the AWT Rectangle i.e. make sure your import is:

import javafx.scene.shape.Rectangle;

而不是

import java.awt.Rectangle;

更新

根据我原来的评论，看起来好像你引用了 Rectangle 类型的错误导入。我不认识导入 com.sun.javafx.geom.Rectangle ，这是来自旧版本的JavaFX吗？

As per my original comment it looks as though you are referencing the wrong import for the Rectangle type. I don't recognise the import com.sun.javafx.geom.Rectangle, is this from an older version of JavaFX?

您还引用了错误的 MouseEvent 类型。

You are also referencing the incorrect MouseEvent type.

更改：

import com.sun.glass.events.MouseEvent;

收件人：

import javafx.scene.input.MouseEvent;

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