Android(安卓)PendingIntent和Intent

Java代码

Notificationn= new Notification(R.drawable.face_1, "Service启动" ,System.currentTimeMillis());
PendingIntentcontentIntent=PendingIntent.getActivity(this , 0 , new Intent( this ,TServiceHolder. class ), 0 );
n.setLatestEventInfo(this , "任务标题" , "任务内容" ,contentIntent);
nManager.notify(NOTIFICATION_ID,n);//任务栏启动

Notification n = new Notification(R.drawable.face_1, "Service启动", System.currentTimeMillis());PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, TServiceHolder.class), 0);n.setLatestEventInfo(this, "任务标题", "任务内容", contentIntent);nManager.notify(NOTIFICATION_ID, n); // 任务栏启动

PendingIntent和Intent的区别：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网络中android发送短信示例

（1）代码节选

Java代码

Stringmsg= "你好，美女" ;
Stringnumber="135****6784" ;
SmsManagersms=SmsManager.getDefault();
PendingIntentpi=PendingIntent.getBroadcast(SmsActivity.this , 0 , new Intent(...), 0 );
sms.sendTextMessage(number,null ,msg,pi, null );
Toast.makeText(SmsActivity.this , "发送成功" ,Toast.LENGHT_LONG).show();

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,"发送成功",Toast.LENGHT_LONG).show();

（2）代码解释

PendingIntent就是一个Intent的描述，我们可以把这个描述交给别的程序，别的程序根据这个描述在后面的别的时间做你安排做的事情 （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，就相当于PendingIntent代表了Intent）。本例中别的程序就是发送短信的程序，短信发送成功后要把intent广播出去。
函数SmsManager.sendTextMessage(String destinationAddress, String scAddress, String text, PendingIntent sentIntent, PendingIntent deliveryIntent)中参数解释：
1）PendingIntent sentIntent：当短信发出时，成功的话sendIntent会把其内部的描述的intent广播出去，否则产生错误代码并通过 android.app.PendingIntent.OnFinished进行回调，这个参数最好不为空，否则会存在资源浪费的潜在问题；
2）PendingIntent deliveryIntent：是当消息已经传递给收信人后所进行的PendingIntent广播。
查看PendingIntent 类可以看到许多的Send函数，就是PendingIntent在进行被赋予的相关的操作。

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