http://www.oschina.net/code/snippet_270292_14489
[代码] [Java]代码
001 | Android Notification通知详解 |
003 | 根据activity的生命周期,在activity不显示时,会执行onStop函数(比如按下home键),所以你在onStop函数(按退出键除外)里面把notification放在通知栏里,再此显示时,把notification从通知栏里去掉。或者,只要程序在运行就一直显示通知栏图标。 |
007 | 下面对Notification类中的一些常量,字段,方法简单介绍一下: |
009 | DEFAULT_ALL 使用所有默认值,比如声音,震动,闪屏等等 |
010 | DEFAULT_LIGHTS 使用默认闪光提示 |
011 | DEFAULT_SOUNDS 使用默认提示声音 |
012 | DEFAULT_VIBRATE 使用默认手机震动 |
013 | 【说明】:加入手机震动,一定要在manifest.xml中加入权限: |
014 | <uses-permission android:name= "android.permission.VIBRATE"
/> |
016 | notification.defaults =DEFAULT_SOUND|DEFAULT_VIBRATE;
|
017 | notification.defaults |= DEFAULT_SOUND (最好在真机上测试,震动效果模拟器上没有) |
022 | FLAG_AUTO_CANCEL 该通知能被状态栏的清除按钮给清除掉 |
023 | FLAG_NO_CLEAR 该通知能被状态栏的清除按钮给清除掉 |
024 | FLAG_ONGOING_EVENT 通知放置在正在运行 |
025 | FLAG_INSISTENT 是否一直进行,比如音乐一直播放,知道用户响应 |
030 | contentIntent 设置PendingIntent对象,点击时发送该Intent |
032 | flags 设置flag位,例如FLAG_NO_CLEAR等 |
040 | NotificationManager常用方法介绍: |
041 | public void
cancelAll() 移除所有通知(只是针对当前Context下的Notification) |
042 | public void
cancel( int
id) 移除标记为id的通知 (只是针对当前Context下的所有Notification) |
043 | public void
notify(String tag , int
id, Notification notification) 将通知加入状态栏,标签为tag,标记为id |
044 | public void
notify( int
id, Notification notification) 将通知加入状态栏,标记为id |
049 | package com.ljq.activity; |
051 | import android.app.Activity; |
052 | import android.app.Notification; |
053 | import android.app.NotificationManager; |
054 | import android.app.PendingIntent; |
055 | import android.content.Intent; |
056 | import android.graphics.Color; |
057 | import android.os.Bundle; |
059 | public class
MainActivity extends
Activity { |
060 | /** Called when the activity is first created. */ |
062 | public
void onCreate(Bundle savedInstanceState) { |
063 | super .onCreate(savedInstanceState); |
064 | setContentView(R.layout.main); |
069 | protected
void onStop() { |
075 | protected
void onStart() { |
083 | private
void showNotification(){ |
085 | NotificationManager notificationManager = (NotificationManager)
|
086 | this .getSystemService(android.content.Context.NOTIFICATION_SERVICE);
|
089 | Notification notification = new
Notification(R.drawable.icon, |
090 | "督导系统" , System.currentTimeMillis());
|
095 | notification.flags |= Notification.FLAG_ONGOING_EVENT;
|
096 | notification.flags |= Notification.FLAG_NO_CLEAR;
|
097 | notification.flags |= Notification.FLAG_SHOW_LIGHTS;
|
102 | notification.defaults = Notification.DEFAULT_LIGHTS;
|
105 | notification.ledARGB = Color.BLUE;
|
106 | notification.ledOnMS = 5000 ;
|
109 | CharSequence contentTitle = "督导系统标题" ;
|
110 | CharSequence contentText = "督导系统内容" ;
|
111 | Intent notificationIntent = new
Intent(MainActivity. this , MainActivity. class );
|
112 | PendingIntent contentItent = PendingIntent.getActivity( this ,
0 , notificationIntent,
0 ); |
113 | notification.setLatestEventInfo( this , contentTitle, contentText, contentItent);
|
116 | notificationManager.notify( 0 , notification);
|
120 | private
void clearNotification(){ |
122 | NotificationManager notificationManager = (NotificationManager)
this |
123 | .getSystemService(NOTIFICATION_SERVICE);
|
124 | notificationManager.cancel( 0 );
|