Status Bar Notifications(StatusBarNotification)

以下，結合官方文檔來學習，我本人英語一般，順便帶着熟悉下嘛，吼吼

建立Notification的方式：

1.Notification

2.NotificationManager

官方文檔建立如下：

To create a status bar notification:

Get a reference to the NotificationManager: 

String ns = Context.NOTIFICATION_SERVICE;

NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);

Instantiate the Notification: 

int icon = R.drawable.notification_icon;

CharSequence tickerText = "Hello";

long when = System.currentTimeMillis();

Notification notification = new Notification(icon, tickerText, when);

Define the Notification's expanded message and Intent: 

Context context = getApplicationContext();

CharSequence contentTitle = "My notification";

CharSequence contentText = "Hello World!";

Intent notificationIntent = new Intent(this, MyClass.class);

PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);

Pass the Notification to the NotificationManager: 

private static final int HELLO_ID = 1;

mNotificationManager.notify(HELLO_ID, notification);

That's it. Your user has now been notified.

需要注意的是：如果要在通知欄中通知不同類型的消息時可以用IntentService來處理異步請求哦。。吼吼。。,使用服務後千萬記得要在全局檔案中注冊服務，不然報錯。

如上官方文檔中建立的通知，當通知消息完成後可以再在此處設定播放聲音或振動或顯示一條短消息，如下：

//以下是下載下傳完畢後的某些操作：如，，，，播放聲音、顯示一條消息或振動或閃爍燈

//notification.sound = notification.DEFAULT_SOUND;

//notification.defaults = Notification.DEFAULT_ALL;

官方文檔如下：

Adding a sound

You can alert the user with the default notification sound (which is defined by the user) or with a sound specified by your application.

To use the user's default sound, add "DEFAULT_SOUND" to the defaults field:

notification.defaults |= Notification.DEFAULT_SOUND;

To use a different sound with your notifications, pass a Uri reference to the sound field. The following example uses a known audio file saved to the device SD card:

notification.sound = Uri.parse("file:///sdcard/notification/ringer.mp3");

notification.sound = Uri.withAppendedPath(Audio.Media.INTERNAL_CONTENT_URI, "6");

If you want the sound to continuously repeat until the user responds to the notification or the notification is cancelled, add "FLAG_INSISTENT" to the flags field.

Note: If the defaults field includes "DEFAULT_SOUND", then the default sound overrides any sound defined by the sound field.

Adding vibration

You can alert the user with the the default vibration pattern or with a vibration pattern defined by your application.

To use the default pattern, add "DEFAULT_VIBRATE" to the defaults field:

notification.defaults |= Notification.DEFAULT_VIBRATE;

To define your own vibration pattern, pass an array of long values to the vibrate field:

long[] vibrate = {0,100,200,300};

notification.vibrate = vibrate;

The long array defines the alternating pattern for the length of vibration off and on (in milliseconds). The first value is how long to wait (off) before beginning, the second value is the length of the first vibration, the third is the next length off, and so on. The pattern can be as long as you like, but it can't be set to repeat.

Note: If the defaults field includes "DEFAULT_VIBRATE", then the default vibration overrides any vibration defined by the vibrate field.

Adding flashing lights

To alert the user by flashing LED lights, you can implement the default light pattern (if available), or define your own color and pattern for the lights.

To use the default light setting, add "DEFAULT_LIGHTS" to the defaults field:

notification.defaults |= Notification.DEFAULT_LIGHTS;

To define your own color and pattern, define a value for the ledARGB field (for the color), the ledOffMS field (length of time, in milliseconds, to keep the light off), the ledOnMS (length of time, in milliseconds, to keep the light on), and also add "FLAG_SHOW_LIGHTS" to the flags field:

notification.ledARGB = 0xff00ff00;

notification.ledOnMS = 300;

notification.ledOffMS = 1000;

notification.flags |= Notification.FLAG_SHOW_LIGHTS;

In this example, the green light repeatedly flashes on for 300 milliseconds and turns off for one second. Not every color in the spectrum is supported by the device LEDs, and not every device supports the same colors, so the hardware estimates to the best of its ability. Green is the most common notification color.

      本文轉自華華世界 51CTO部落格，原文連結：http://blog.51cto.com/mzh3344258/733369，如需轉載請自行聯系原作者