Android-Intent和PendingIntent的關系

編輯：初級開發

Notification n = new Notification(R.drawable.face_1, "Service啟動", System.currentTimeMillis());

PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, TServiceHolder.class), 0);

n.setLatestEventInfo(this, "任務標題", "任務內容", contentIntent);

nManager.notify(NOTIFICATION_ID, n); // 任務欄啟動

PendingIntent和Intent的區別：An Intent is something that is used right now; a PendingIntent is something that may create an Intent in the future. You will use a PendingIntent with Notifications, AlarmManager, etc. 1. GSM網絡中android發送短信示例（1）代碼節選
Java代碼

String msg ="你好，美女";

String number = "135****6784";

SmsManager sms = SmsManager.getDefault();

PendingIntent pi = PendingIntent.getBroadcast(SmsActivity.this,0,new Intent(...),0);

sms.sendTextMessage(number, null, msg, pi, null);

Toast.makeText(SmsActivity.this,"發送成功",Toast.LENGHT_LONG).show();

（2）代碼解釋       PendingIntent就是一個Intent的描述，我們可以把這個描述交給別的程序，別的程序根據這個描述在後面的別的時間做你安排做的事情（By giving a PendingIntent to another application, you are granting it the right to perform the Operation you have specifIEd as if the other application was yourself，就相當於PendingIntent代表了Intent）。本例中別的程序就是發送短信的程序，短信發送成功後要把intent廣播出去。
      函數SmsManager.sendTextMessage(String destinationAddress, String scAddress, String text, PendingIntent sentIntent, PendingIntent deliveryIntent)中參數解釋：
      1）PendingIntent sentIntent：當短信發出時，成功的話sendIntent會把其內部的描述的intent廣播出去，否則產生錯誤代碼並通過 android.app.PendingIntent.OnFinished進行回調，這個參數最好不為空，否則會存在資源浪費的潛在問題；
      2）PendingIntent deliveryIntent：是當消息已經傳遞給收信人後所進行的PendingIntent廣播。
      查看PendingIntent 類可以看到許多的Send函數，就是PendingIntent在進行被賦予的相關的操作。
原文來此：
http://yichen914.spaces.live.com/blog/cns!723590D920FAF62B!703.entry
http://wayfarer.Javaeye.com/blog/586159

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初級開發