例子：BlackBerry真正的后台运行程序，Task里面看不到的哦

说明：
1.BlackBerry_App_Descriptor.xml设置程序为Auto-run on startup，Do not display the application icon on the BlackBerry home screen

 

2.手机开机后自动运行 BackgroundApplication

3.主程序BackgroundApplication的main中，执行BackgroundThread.waitForSingleton().start();启动后台线程

4.BackgroundThread也是extends Application，里面有个Thread在后面运行，这里是死循环，该或者监听push数据或者其他系统事件--地理位置变化/手机radio网络连接等等。这里是每隔5秒钟在手机日志里面写点东西。

 

5.注意主程序和线程程序都是 extends Application

 

6.  要弹出窗口，必须调用  invokeLater( new Runnable() {

 

提示：

核心是要extends Application

但是我并不清楚是否主程序和线程程序都需要extends Application

细节还需要揣摩和试验，同志尚需努力，呵呵。周末愉快！

 

 /******************************************************************************************/
主程序：

import net.rim.device.api.system.Application;

class BackgroundApplication extends Application {
    public static void main(String[] args) {
     BackgroundThread.loggerInit();
     BackgroundThread.log("main() loggerInit");
        BackgroundThread.waitForSingleton().start();
    }

    public BackgroundApplication() {
    }
}

 /******************************************************************************************/
后台运行程序：

class BackgroundThread extends Application {
 public static String appName = "BackgroundThread";
 public static long GUID = 0xcf891935c91e1987L;
    private ListenerThread myThread;
   
    public BackgroundThread() {
        myThread = new ListenerThread();
    }

/******************************************************************************************
* BackGround waitForSingleton() - returns an instance of a listening thread
******************************************************************************************/      
    public static BackgroundThread waitForSingleton(){
     log("waitForSingleton");
     //make sure this is a singleton instance
        RuntimeStore store = RuntimeStore.getRuntimeStore();
        Object o = store.get(GUID);
        if (o == null){
         log("inited");
            store.put(GUID, new BackgroundThread());
            return (BackgroundThread)store.get(GUID);
        } else {
            return (BackgroundThread)o;
        }
    }

 /******************************************************************************************
 * start() - starts the custom listen thread
 ******************************************************************************************/   
    public void start(){
        invokeLater(new Runnable() {
            public void run() {
                myThread.start();
            }
        });
       
        this.enterEventDispatcher();
    }   
 /******************************************************************************************
 * customer listening thread that is an extention of thread()
 ******************************************************************************************/   
    class ListenerThread extends Thread { 
   
        public void run() {
         log("ListenerThread running");
          for(int i=0;true;i++) {
              try {
     sleep(30000);
    } catch (InterruptedException e) {
     e.printStackTrace();
    }
              log("ListenerThread sleep 7 seconds");
             
              log("ListenerThread sleep 1a");

              invokeLater( new Runnable() {
        public void run()
        {
         //InfoPopupScreen _screen = new InfoPopupScreen();
         Dialog _screen = new Dialog(Dialog.D_OK_CANCEL, "关闭我", Dialog.D_OK, Bitmap.getPredefinedBitmap(Bitmap.QUESTION), Manager.VERTICAL_SCROLL);
         Ui.getUiEngine().pushGlobalScreen(_screen, 1, UiEngine.GLOBAL_MODAL);  //GLOBAL_MODAL would block
        }
     } );
          }
        }
    }
 /******************************************************************************************/
 public static void loggerInit() {
  EventLogger.register(GUID, appName, EventLogger.VIEWER_STRING);
  log("LoggerInited");
 }

 public static void log(String value) {
  EventLogger
    .logEvent(GUID, value.getBytes(), EventLogger.ALWAYS_LOG);
 }

}

 

 /******************************************************************************************/