如何打开两个Javafx窗口？ [英] How to open two Javafx windows?

问题描述

我正在使用javafx，想在按钮的'setOnAction'中编写一个代码来关闭javafx1类和运行javafx2类，但我看到错误'应用程序启动不能多次调用'。我该如何解决这个问题？

I'm using javafx, want to write a code in 'setOnAction' of a button to close a javafx1 class an run javafx2 class, but i've seen error 'Application launch must not be called more than once'. How can i fix this?

//This code is in the class JavaFX1:
button.setOnAction(new EventHandler<ActionEvent>() {
      @Override
      public void handle(ActionEvent event) {
          JavaFX2.main(null); //How can i change current line?
          stage.close();
      }
});

推荐答案

这样做：

        @Override
        public void handle(ActionEvent event) {
            System.out.println("Hello World!");

            Stage secondStage = new Stage();
            secondStage.setScene(new Scene(new HBox(4, new Label("Second window"))));
            secondStage.show();

        }

您还可以设置新窗口的坐标和大小。

You may also set coordinates and size of the new window.

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