javafx：显示流程进度的进度条？ [英] javafx: Progress bar to show the progress of the process?

问题描述

我想在功能运行时显示进度条。展示它的最佳方式是什么？基本上我正在构建一个程序，只需单击即可发送多封邮件。在发送邮件时，我想在发送邮件时显示进度条。

I want to show progress bar while a functionality is running. What is the best way to show it? Basically I am building a program to send multiple mails on a single click. While sending the mail I want to show progress bar while sending the mails.

推荐答案

在这种情况下，最佳解决方案是使用任务。

The best solution in this case is using a Task.

示例：

Task<Parent> yourTaskName = new Task<Parent>() {
    @Override
    public Parent call() {
        // DO YOUR WORK

        //method to set progress
        updateProgress(workDone, max);

        //method to set labeltext
        updateMessage(message);
    }
};

//ProgressBar
ProgressBar pBar = new ProgressBar();
//Load Value from Task
pBar.progressProperty().bind(yourTaskName.progressProperty());
//New Loading Label
Label statusLabel = new Label();
//Get Text
statusLabel.setText("Loading...");
//Layout
VBox root = new VBox(statusLabel, pBar);
//SetFill Width TRUE
root.setFillWidth(true);
//Center Items
root.setAlignment(Pos.CENTER);

//SetOnSucceeded methode 
yourTaskName.setOnSucceeded(new EventHandler<WorkerStateEvent>() {
        @Override
        public void handle(WorkerStateEvent event) {
            System.out.println("Finish");
        }
});

//Start Thread
Thread loadingThread = new Thread(yourTaskName);
loadingThread.start();

希望这可以帮到你。

PS ：任务中的代码作为线程运行 ...

P.S.: The code in the task run as a Thread...

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