[英]JavaFX : 'About' MenuItem is missing from the 'Application Menu' in OSX
我在JavaFX中創建了一個Hello World應用程序,並且我將同時使用QuitHandler和AboutHandler,我注意到“ About”和“ Preferences”菜單項未顯示在菜單中:
我如何使其看起來像:
另外,QuitHandler也不執行檢查保存行為,這是javaFX Hello World的代碼。
package helloworld;
import com.apple.eawt.AppEvent;
import com.apple.eawt.QuitResponse;
import java.security.AccessControlException;
import java.util.Optional;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.ButtonType;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.control.SeparatorMenuItem;
import javafx.scene.control.TextArea;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
/**
* Sample application.
* @author me
*/
public class HelloWorldApplication extends Application {
// constants --------------------------------------------------------------------------------
private static final Logger LOG = LogManager.getLogger();
/**
* Running on Mac platform.
*/
public static final boolean MAC;
static {
boolean mac = false;
try {
final String osName = System.getProperty("os.name");
LOG.debug("OS: {}", osName);
mac = osName != null && osName.toLowerCase().contains("mac");
} catch (AccessControlException ex) {
LOG.debug("Cannot determine OS");
}
MAC = mac;
}
// member variables -------------------------------------------------------------------------
private final Alert mAlert = new Alert(Alert.AlertType.CONFIRMATION);
// methods ----------------------------------------------------------------------------------
@Override
public void start(Stage pStage) {
final BorderPane root = new BorderPane();
final MenuBar menuBar = new MenuBar();
final Menu fileMenu = new Menu("_File");
menuBar.getMenus().add(fileMenu);
// Exit
boolean macQuitMenuItem = false;
if (MAC) {
final com.apple.eawt.Application application = com.apple.eawt.Application.getApplication();
try {
application.setQuitHandler(
(AppEvent.QuitEvent pEvt, QuitResponse pQuitResponse) -> Platform.runLater(
() -> exit(pQuitResponse::cancelQuit)
)
);
macQuitMenuItem = true;
// occurs when running as untrusted applet
} catch (AccessControlException ex) {
LOG.debug("Cannot listen for application quit");
}
}
if (!macQuitMenuItem) {
fileMenu.getItems().add(new SeparatorMenuItem());
final MenuItem exitMenuItem = new MenuItem("E_xit");
exitMenuItem.setOnAction(pEvt -> exit(() -> {}));
fileMenu.getItems().add(exitMenuItem);
}
root.setTop(menuBar);
root.setCenter(new TextArea("Hello, world!"));
final Scene scene = new Scene(root, 300, 250);
pStage.setTitle("Hello World!");
pStage.setScene(scene);
mAlert.initOwner(pStage);
mAlert.setTitle("Confirm Exit");
mAlert.setHeaderText("Look, a Confirmation Dialog");
mAlert.setContentText("Are you sure you want to exit?");
pStage.show();
}
public static void main(String[] pArgs) {launch(pArgs);}
public void exit() {exit(() -> {});}
public void exit(Runnable pAbortExitRunnable) {
LOG.info("Exit");
if (checkUnsavedChanges()) {
Platform.exit();
} else {
pAbortExitRunnable.run();
}
}
private boolean checkUnsavedChanges() {
final Optional<ButtonType> result = mAlert.showAndWait();
return result.isPresent() && result.get() == ButtonType.OK;
}
}
我想知道這段代碼有什么問題嗎?
編輯1:pom.xml來編譯和測試此代碼。
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>app</groupId>
<artifactId>helloworld</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.yuvimasory</groupId>
<artifactId>orange-extensions</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.8</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.8</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>3.0.0</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>initialize</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
<configuration>
<archive>
<index>true</index>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>helloworld.HelloWorldApplication</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</project>
使OSX菜單與JavaFX應用程序一起使用是一件棘手的事情。 我可以建議您看看https://github.com/codecentric/NSMenuFX
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