一些API的使用

   Paint paint = new Paint();
  // setColor 须在 setAlpha 方法之前设置，原因请参见 Android API
  paint.setColor(Color.GRAY);
  // 值越大越不透明
  paint.setAlpha(255);

 

//取得屏幕分辨率
DisplayMetrics dm = new DisplayMetrics();   
getWindowManager().getDefaultDisplay().getMetrics(dm);   

 

 

// 去掉标题栏
requestWindowFeature(Window.FEATURE_NO_TITLE);

 

// 设置为全屏
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,   WindowManager.LayoutParams.FLAG_FULLSCREEN);  

 

// 如何一个 service 被调用很多次，即 onStartCommand() 响应过很多个请求，
// 那么会相应的产生很多个 startId，比如：1，2，3 三个
// 那么，stopSelfResult(int startId) 只会在参数为 3 的时候才会真正地停止这个服务
// 另外，stopSelf() 是stopSelfResult()的老版本，推荐使用新版本
boolean result = stopSelfResult(msg.arg1);

 

/**
     * Show a notification while this service is running.
     */
    private void showNotification() {
        // In this sample, we'll use the same text for the ticker and the expanded notification
        CharSequence text = getText(R.string.local_service_started);

        // Set the icon, scrolling text and timestamp
        Notification notification = new Notification(R.drawable.stat_sample, text,
                System.currentTimeMillis());

        // The PendingIntent to launch our activity if the user selects this notification
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                new Intent(this, LocalServiceActivities.Controller.class), 0);

        // Set the info for the views that show in the notification panel.
        notification.setLatestEventInfo(this, getText(R.string.local_service_label),
                       text, contentIntent);

        // Send the notification.
        // We use a layout id because it is a unique number.  We use it later to cancel.
        mNM.notify(R.string.local_service_started, notification);
    }