如何在BlackBerry上实现后台服务?

该示例演示了如何在BlackBerry上实现一个后台服务，并保证它能在设备重启后自动启动。

public class BackgroundService extends Application {
    private static BackgroundService instance;

    public static void main(String[] args) {
        if (args.length > 0 && args[0].equals("gui")) {
            //启动前台服务
            ApplicationManager.getApplicationManager()
                .runApplication(new Gui());
        } else {
            BackgroundService theApp = new BackgroundService();
            theApp.enterEventDispatcher();
        }
    }

    public BackgroundService() {
        instance = this;
    }

    // 获取Service实例
    public static BackgroundService getInstance() {
        return instance;
    }

    // 启动后台服务
    public void startBackground() {
        int  interval = 60;//单位: 秒
        ApplicationDescriptor current = 
            ApplicationDescriptor.currentApplicationDescriptor();
        ApplicationDescriptor background =
            new ApplicationDescriptor(current, "BackgroundService");
        background.setPowerOnBehavior(ApplicationDescriptor.DO_NOT_POWER_ON);
        ApplicationManager manager = 
            ApplicationManager.getApplicationManager();
        manager.scheduleApplication(background, System.currentTimeMillis()+ interval * 1000, false);
    }

  // 程序入口
    public static void main(String[] args) {
        BackgroundService app = new BackgroundService();
        app.startBackground();
        app.enterEventDispatcher();
    }
}

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