How to close a JavaFX application on window close?

2019-01-13 17:21发布

In Swing you can simply use setDefaultCloseOperation() to shut down the entire application when the window is closed.

However in JavaFX I can't find an equivalent. I have multiple windows open and I want to close the entire application if a window is closed. What is the way to do that in JavaFX?

Edit:

I understand that I can override setOnCloseRequest() to perform some operation on window close. The question is what operation should be performed to terminate the entire application?

stage.setOnCloseRequest(new EventHandler<WindowEvent>() {
    @Override
    public void handle(WindowEvent event) {
        stop();
    }
});

The stop() method defined in Application class does nothing.

11条回答
Animai°情兽
2楼-- · 2019-01-13 17:34

Did you try this..setOnCloseRequest

setOnCloseRequest(EventHandler<WindowEvent> value)   

There is one example

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可以哭但决不认输i
3楼-- · 2019-01-13 17:35

For reference, here is a minimal implementation using Java 8 :

@Override
public void start(Stage mainStage) throws Exception {

    Scene scene = new Scene(new Region());
    mainStage.setWidth(640);
    mainStage.setHeight(480);
    mainStage.setScene(scene);

    //this makes all stages close and the app exit when the main stage is closed
    mainStage.setOnCloseRequest(e -> Platform.exit());

    //add real stuff to the scene...
    //open secondary stages... etc...
}
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狗以群分
4楼-- · 2019-01-13 17:36
stage.setOnCloseRequest(new EventHandler<WindowEvent>() {
    @Override
    public void handle(WindowEvent event) {
        Platform.exit();
        System.exit(0);
    }
}
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在下西门庆
5楼-- · 2019-01-13 17:39

This seemed to work for me:

EventHandler<ActionEvent> quitHandler = quitEvent -> {

        System.exit(0);

    };
    // Set the handler on the Start/Resume button
    quit.setOnAction(quitHandler);
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我命由我不由天
6楼-- · 2019-01-13 17:40

The application automatically stops when the last Stage is closed. At this moment, the stop() method of your Application class is called, so you don't need an equivalent to setDefaultCloseOperation()

If you want to stop the application before that, you can call Platform.exit(), for example in your onCloseRequest call.

You can have all these information on the javadoc page of Application : http://docs.oracle.com/javafx/2/api/javafx/application/Application.html

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爱情/是我丢掉的垃圾
7楼-- · 2019-01-13 17:40

Some of the provided answers did not work for me (javaw.exe still running after closing the window) or, eclipse showed an exception after the application was closed.

On the other hand, this works perfectly:

primaryStage.setOnCloseRequest(new EventHandler<WindowEvent>() {
    @Override
    public void handle(WindowEvent t) {
        Platform.exit();
        System.exit(0);
    }
});
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