android整合--notification推送通知

到目前为止，想必大家已经都熟悉使用Toast去给用户显示信息了。尽管使用Toast很方便，但是Toast显示的通知并不是永久存储的。它只在屏幕上显示一小段时间，然后就消失了。如果它包含一些特别重要的信息，如果用户没有观察屏幕，那么用户就很容易错过它。

对于那些重要的信息，应该采用一种更加持久保存的方法。在这种情况下，应该使用NotificationMnanger（消息管理器）去显示一个长久的信息，这个消息被显示在了StatusBar（状态栏）上面，使用用户能够很容易地看见。

接下来展示如何发送一个Notification通知。

首先建个工程Notification

先不解释 上代码

[java] view plaincopy

1. public class NotificationsActivity extends Activity {
2. /** Called when the activity is first created. */
3. int notificationId = 1;
4. @Override
5. public void onCreate(Bundle savedInstanceState) {
6. super.onCreate(savedInstanceState);
7. setContentView(R.layout.main);
9. }
11. public void onclick(View view){
12. displayNotification();
13. }
14. public void displayNotification(){
15. //设置点击通知跳转页面
16. Intent intent = new Intent(this,NotificationView.class);
17. intent.putExtra("notificationid", notificationId);
18. //得到pendingintent 延迟执行intent
19. PendingIntent pendintent = PendingIntent.getActivity(this, 0 , intent, 0);
20. //获取通知管理器并设置图标与显示时间
21. NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
22. Notification notfi = new Notification(R.drawable.icon,"today there is a meeting",System.currentTimeMillis());
23. //设置通知标题与内容
24. CharSequence form = "System notification";
25. CharSequence message = "Meeting is at 3pm";
26. notfi.setLatestEventInfo(this, form, message, pendintent);
27. //---100ms delay, vibrate for 250ms, pause for 100 ms and
28. // then vibrate for 500ms---
29. //震动提示
30. notfi.vibrate = new long[]{100,250,100,500};
31. nm.notify(notificationId, notfi);
32. }
33. }

点击通知转到这个activity

[java] view plaincopy

1. public class NotificationView extends Activity {
3. /* (non-Javadoc)
4. * @see android.app.Activity#onCreate(android.os.Bundle)
5. */
6. @Override
7. protected void onCreate(Bundle savedInstanceState) {
8. // TODO Auto-generated method stub
9. super.onCreate(savedInstanceState);
10. setContentView(R.layout.notification);
11. NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
12. nm.cancel(getIntent().getExtras().getInt("notificationId"));
13. }
16. }

main.xml

[html] view plaincopy

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical"
4. android:layout_width="fill_parent"
5. android:layout_height="fill_parent"
6. >
7. <TextView
8. android:layout_width="fill_parent"
9. android:layout_height="wrap_content"
10. android:text="@string/hello"
11. />
12. <Button
13. android:id="@+id/btnnoti"
14. android:layout_width="fill_parent"
15. android:layout_height="wrap_content"
16. android:onClick="onclick"
17. android:text="点击通知"
18. />
19. </LinearLayout>

notification.xml

[html] view plaincopy

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout
3. xmlns:android="http://schemas.android.com/apk/res/android"
4. android:layout_width="fill_parent"
5. android:layout_height="fill_parent"
6. android:orientation="vertical">
7. <TextView
8. android:layout_width="fill_parent"
9. android:layout_height="wrap_content"
10. android:text="Here are the details for the notification..." />
11. </LinearLayout>

[html] view plaincopy

1. <?xml version="1.0" encoding="utf-8"?>
2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
3. package="com.test.Notifications"
4. android:versionCode="1"
5. android:versionName="1.0">
6. <uses-sdk android:minSdkVersion="7" />
8. <application android:icon="@drawable/icon" android:label="@string/app_name">
9. <activity android:name=".NotificationsActivity"
10. android:label="@string/app_name">
11. <intent-filter>
12. <action android:name="android.intent.action.MAIN" />
13. <category android:name="android.intent.category.LAUNCHER" />
14. </intent-filter>
15. </activity>
17. <activity android:name=".NotificationView"
18. android:label="notification detail">
19. <intent-filter>
20. <action android:name="android.intent.action.MAIN" />
21. <category android:name="android.intent.category.DEFAULT" />
22. </intent-filter>
23. </activity>
24. </application>
25. <uses-permission android:name="android.permission.VIBRATE"/>
26. </manifest>

大致思路为

1 设置通知跳转后的intent和activity，通知id

Intent intent = new Intent(this,NotificationView.class);
intent.putExtra("notificationid", notificationId);

2 得到pendingintent（后篇讲一下pengdingintent 和intent的区别）

PendingIntent pendintent = PendingIntent.getActivity(this, 0 , intent, 0);

3 获取通知管理器并设置图标与显示时间
NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
Notification notfi = new Notification(R.drawable.icon,"today there is a meeting",System.currentTimeMillis());

4 //设置通知标题与内容
CharSequence form = "System notification";
CharSequence message = "Meeting is at 3pm";
notfi.setLatestEventInfo(this, form, message, pendintent);

5 //震动提示(可加可不加)
notfi.vibrate = new long[]{100,250,100,500};
nm.notify(notificationId, notfi);