package cc.cu;import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
/*** Demo描写叙述:* 两个Notification均使用Intent携带数据时.当收到第一个通知时取出其携带的数据没有问题,数据准确;* 可是当收到第二个通知时取出其携带的数据时,竟然发现是第一个通知携带的数据.* 当时出现这个问题时,第一感觉问题在于* NotificationManager.notify(int id, Notification notification)* 方法里的id值同样造成的.但将其改动为不同的值后发现问题依然.* * 后来发现问题出现于方法:* PendingIntent.getActivity(Context context, int requestCode, Intent intent, int flags)* 的最后一个參数.该值共同拥有四个常量.最好是使用PendingIntent.FLAG_UPDATE_CURRENT,该值的解释例如以下:* * Flag indicating that if the described PendingIntent already exists, * then keep it but replace its extra data with what is in this new Intent* * 假设PendingIntent已经存在,那么保留它而且仅仅替换它的extra数据* * 參考资料:* 1 http://blog.csdn.net/lilu_leo/article/details/8491738* 2 http://developer.android.com/reference/android/app/PendingIntent.html#FLAG_UPDATE_CURRENT* 3 http://blog.csdn.net/vipzjyno1/article/details/25248021*   Thank you very much*   在资料3中对于Notification作了非常全面和具体的介绍.有兴趣的能够看看.* * 备注说明:* 測试环境Android2.3.6**/
public class MainActivity extends Activity {private Context mContext;private Button mFirstButton;private Button mSecondButton;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);init();// 取出通知携带的数据if (this.getIntent().getExtras() != null) {String data = this.getIntent().getExtras().getString("testData");System.out.println("得到通知传过来的数据:" + data);}}private void init() {mContext = this;mFirstButton = (Button) findViewById(R.id.sendFirstNotificationButton);mFirstButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View view) {sendFirstNotification();}});mSecondButton = (Button) findViewById(R.id.sendSecondNotificationButton);mSecondButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View view) {sendSecondNotification();}});}// 发送通知private void sendFirstNotification() {Notification notification = new Notification();Intent intent = new Intent(mContext, MainActivity.class);intent.putExtra("testData", "来自first的数据");// PendingIntent pendingIntent=PendingIntent.getActivity(mContext, 0,intent, 0);//error codePendingIntent pendingIntent = PendingIntent.getActivity(mContext, 0,intent, PendingIntent.FLAG_UPDATE_CURRENT);notification.icon = R.drawable.ic_launcher;notification.defaults = Notification.DEFAULT_SOUND;notification.flags |= Notification.FLAG_AUTO_CANCEL;notification.tickerText = "第一个通知";notification.setLatestEventInfo(mContext, "通知1", "来自第一个button触发的通知",pendingIntent);NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);notificationManager.notify(0, notification);}// 发送通知private void sendSecondNotification() {Notification notification = new Notification();Intent intent = new Intent(mContext, MainActivity.class);intent.putExtra("testData", "来自second的数据");// PendingIntent pendingIntent=PendingIntent.getActivity(mContext, 0,intent, 0);//error codePendingIntent pendingIntent = PendingIntent.getActivity(mContext, 0,intent, PendingIntent.FLAG_UPDATE_CURRENT);notification.icon = R.drawable.ic_launcher;notification.defaults = Notification.DEFAULT_SOUND;notification.flags |= Notification.FLAG_AUTO_CANCEL;notification.tickerText = "第二个通知";notification.setLatestEventInfo(mContext, "通知2", "来自第二个button触发的通知",pendingIntent);NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);notificationManager.notify(1, notification);}}

main.xml例如以下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"><Buttonandroid:id="@+id/sendFirstNotificationButton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_marginTop="100dip"android:text="发送第一个通知" /><Buttonandroid:id="@+id/sendSecondNotificationButton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_marginTop="200dip"android:text="发送第二个通知" /></RelativeLayout>