Question

参考我的这个问题，fxml file not behaving as expected in OS X，我能够解决第一个问题，但我仍然面临着进度条的问题。当我的应用程序窗口没有最大化但是当我的应用程序窗口最大化时，它的行为很好，我的进度条对话占据了整个屏幕。我的进度条代码如下：

public ProgressBar startProgressBar() {
        primaryStage = new Stage();
        ProgressBar pb = new ProgressBar(0);
        //ProgressIndicator pi = new ProgressIndicator(0);
        //pi.progressProperty().bind(pb.progressProperty());
        HBox hb = new HBox();
        hb.setSpacing(5);
        hb.setAlignment(Pos.CENTER);
        hb.getChildren().addAll(pb);
        Scene scene = new Scene(hb, 300, 100);
        primaryStage.setScene(scene);
        primaryStage.setTitle("Downloading Build...");
        primaryStage.show();
        return pb;
    }

我尝试使用以下内容，但这些都不起作用。

primaryStage.setFullScreen(false);
primaryStage.setMaxHeight(200);
primaryStage.setMaxWidth(400);

但这也行不通。如果我将高度和宽度固定为常数，则对话框仅取高度和宽度，但背景屏幕显示为黑色。

一旦用户点击下载按钮，我就会触发进度条这是我的下载进程代码。在进度条中，我正在比较我的下载文件大小和服务器中文件的大小，我正在使用本地目录中的文件大小更新进度条。

private void download() {
        FTPClient ftpClient = new FTPConnection().makeConnection(loc);

        try {
            ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
            success = ftpClient.changeWorkingDirectory(PATH + preset + "/" + file_to_download + offset);
            System.out.println("Download Path:-" + PATH + preset + "/" + file_to_download + offset);
            if (!success) {
                System.out.println("Could not changed the directory to RIBS");
                return;
            } else {
                System.out.println("Directory changed to RIBS");
            }
            FTPFile[] files = ftpClient.listFiles();
            for (FTPFile file : files) {
                if (file.getName().contains(".zip")) {
                    dfile = file;
                }

            }
            fileMap.put("build", dfile.getName());
            //primaryStage = (Stage) ap.getScene().getWindow();

            String homePath = System.getProperty("user.home");
                        File downloadPath;
                        if(getOS().equals("Mac"))
                        {
                           downloadPath = new File(homePath + "/file path/" + osVer);
                        }
                        else
                        {
            downloadPath = new File(homePath + "\\file path\\" + osVer);
                        }
                        if (!downloadPath.exists()) {
                if (downloadPath.mkdirs()) {
                    System.out.println("Directory is created!");
                } else {
                    System.out.println("Failed to create directory!");
                }
            }
            // System.out.println(chosenDir.getAbsolutePath());
            filePath = new File(downloadPath + "/" + dfile.getName());
            if (filePath.exists()) {
                System.out.println("File altready exist");
                JOptionPane.showMessageDialog(null, "File already exists", "InfoBox: " + "",
                        JOptionPane.INFORMATION_MESSAGE);
                return;
            } else {

                downloadFile = new File(downloadPath + "/" + dfile.getName());
                // Progress bar
                Task<Void> progress = new Task<Void>() {
                    @Override
                    protected Void call() throws Exception {
                        try {
                            for (long progress = 0; progress < dfile.getSize() ; progress = downloadFile.length()) {
                                Thread.sleep(300);
                                System.out.println(progress);
                                updateProgress(progress, dfile.getSize());

                            }
                        } catch (InterruptedException e) {
                        }
                        finally {

                        }
                        return null;
                    }
                };
                ProgressBar slider = startProgressBar();
                slider.progressProperty().bind(progress.progressProperty());

                // download task
                Task downloadTask = new Task<Void>() {
                    @Override
                    public Void call() throws IOException {
                        try {
                            long len = dfile.getSize();
                            System.out.println("File From Server:::::: " + len);

                            System.out.println("DOWNLOAD FILE:::::" + downloadFile);
                            outputFile = new FileOutputStream(downloadFile);
                        } catch (FileNotFoundException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                        ftpClient.sendNoOp();
                        ftpClient.setConnectTimeout(1000);
                        // ftpClient.retrieveFile(dfile, output);
                        if (ftpClient.retrieveFile(dfile.getName(), outputFile) == true) {
                            System.out.println("ReplyCOde:-" + ftpClient.getReplyCode());
                            downloadButton.setDisable(true);

                            try {
                                String homePath = System.getProperty("user.home");
                                Desktop.getDesktop().open(new File(homePath + "/file path"));
                                //primaryStage.hide();
                            } catch (Exception e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                            System.out.println("LOCAL FILE LENGTH:-" + downloadFile.length());
                            if (outputFile != null) {
                                try {
                                    outputFile.close();
                                    ftpClient.logout();
                                    ftpClient.disconnect();
                                } catch (IOException e) {
                                    // TODO Auto-generated catch block
                                    e.printStackTrace();
                                }
                            }
                        }
                        return null;
                    }
                };
                Thread t = new Thread(downloadTask);
                t.start();

                Thread thread = new Thread(progress);
                thread.start();
                downloadTask.setOnSucceeded(evt->primaryStage.hide());

            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            //primaryStage.hide();
        }
        return;
    }

任何对话框都有类似Mac OS X的行为。我尝试过JavaFx警告框也有相同的行为。有什么工作吗？

Alert alert = new Alert(AlertType.INFORMATION);
    alert.setTitle("Information Dialog");
    alert.setHeaderText(null);
    alert.setContentText("cannot connec to server or file not present at server");

Answer 1

描述的效果是没有所有者的对话框的功能。要禁止不需要的行为，请在以下示例中指定对话框的所有者：

alert.initOwner(primaryStage);

下面的minimal example可用于重现Mac OS X 10.11，El Capitan上描述的效果。单击窗口左上角的绿色全屏按钮后，应用程序将展开以填充屏幕。单击显示警报按钮会使展开的窗口滑动到一边，消失以显示警报。取消注释initOwner()并重新测试。展开的窗口（蓝色）现在仍在警报之下

没有所有者：

所有者集：

Apple suggests两种相关的解决方法之一：

选项 - 点击应用程序窗口左上角的绿色全屏按钮，以先前版本的方式展开。
在Dock首选项窗格中选择“双击要缩放的窗口标题栏”后，双击标题栏。

代码：

import java.util.Optional;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonType;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

/**
 * @see https://stackoverflow.com/a/37183801/230513
 */
public class AlertTest extends Application {

    @Override
    public void start(Stage primaryStage) {
        Button button = new Button("Show Alert");
        button.setOnAction(ae -> {
            Alert alert = new Alert(AlertType.CONFIRMATION, "Are you sure?");
            alert.initOwner(primaryStage);
            Optional<ButtonType> result = alert.showAndWait();
            if (result.isPresent() && result.get() == ButtonType.OK) {
                System.out.println("Confirmed!");
            } else {
                System.out.println("Cancelled.");
            }
        });
        StackPane root = new StackPane(button);
        root.setBackground(new Background(new BackgroundFill(
            Color.CORNFLOWERBLUE, CornerRadii.EMPTY, Insets.EMPTY)));
        Scene scene = new Scene(root, 320, 240);
        primaryStage.setTitle("Alert Test");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

JavaFx对话框或警报未在Mac OS X上按预期显示

1 个答案: