Android Notification??知详解

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这是因为android系统版本不同,它所采用的主题风格也不同,这个还是很好理解的。就像Button,在4.0和2.3两个版本下就完全不同www.zgxue.com防采集请勿采集本网。

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[1].[代码] [Java]代码 跳至[1]

Android Notification通知详解根据activity的生命周期,在activity不显示时,会执行onStop函数(比如按下home??,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?? 下面对Notification类中的一些常量,字段,方法简单介绍一下:常量??DEFAULT_ALL 使用所有默认值,比如声音,震动,闪屏等等DEFAULT_LIGHTS 使用默认闪光提示DEFAULT_SOUNDS 使用默认提示声音DEFAULT_VIBRATE 使用默认手机震动 【说明】:加入手机震动,一定要在manifest.xml中加入权限:<uses-permission android:name="android.permission.VIBRATE" />以上的效果常量可以叠??即通过notification.defaults =DEFAULT_SOUND|DEFAULT_VIBRATE; notification.defaults |= DEFAULT_SOUND (最好在真机上测试,震动效果模拟器上没有) //设置flag??FLAG_AUTO_CANCEL 该通知能被状态栏的清除按钮给清除??FLAG_NO_CLEAR 该通知能被状态栏的清除按钮给清除??FLAG_ONGOING_EVENT 通知放置在正在运??FLAG_INSISTENT 是否一直进行,比如音乐一直播放,知道用户响应 常用字段??contentIntent 设置PendingIntent对象,点击时发送该Intentdefaults 添加默认效果flags 设置flag位,例如FLAG_NO_CLEAR??icon 设置图标sound 设置声音tickerText 显示在状态栏中的文字when 发送此通知的时间戳 NotificationManager常用方法介绍??public void cancelAll() 移除所有通知(只是针对当前Context下的Notification)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)public void notify(String tag ,int id, Notification notification) 将通知加入状态栏,标签为tag,标记为idpublic void notify(int id, Notification notification) 将通知加入状态栏,标记为id ?package com.ljq.activity; import android.app.Activity;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.Intent;import android.graphics.Color;import android.os.Bundle; public class MainActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); clearNotification(); } @Override protected void onStop() { showNotification(); super.onStop(); } @Override protected void onStart() { clearNotification(); super.onStart(); } /** * 在状态栏显示通知 */ private void showNotification(){ // 创建一个NotificationManager的引?? NotificationManager notificationManager = (NotificationManager) this.getSystemService(android.content.Context.NOTIFICATION_SERVICE); // 定义Notification的各种属?? Notification notification =new Notification(R.drawable.icon, "督导系统", System.currentTimeMillis()); //FLAG_AUTO_CANCEL 该通知能被状态栏的清除按钮给清除?? //FLAG_NO_CLEAR 该通知不能被状态栏的清除按钮给清除?? //FLAG_ONGOING_EVENT 通知放置在正在运?? //FLAG_INSISTENT 是否一直进行,比如音乐一直播放,知道用户响应 notification.flags |= Notification.FLAG_ONGOING_EVENT; // 将此通知放到通知栏的"Ongoing"??正在运行"组中 notification.flags |= Notification.FLAG_NO_CLEAR; // 表明在点击了通知栏中??清除通知"后,此通知不清除,经常与FLAG_ONGOING_EVENT一起使?? notification.flags |= Notification.FLAG_SHOW_LIGHTS; //DEFAULT_ALL 使用所有默认值,比如声音,震动,闪屏等等 //DEFAULT_LIGHTS 使用默认闪光提示 //DEFAULT_SOUNDS 使用默认提示声音 //DEFAULT_VIBRATE 使用默认手机震动,需加上<uses-permission android:name="android.permission.VIBRATE" />权限 notification.defaults = Notification.DEFAULT_LIGHTS; //叠加效果常量 //notification.defaults=Notification.DEFAULT_LIGHTS|Notification.DEFAULT_SOUND; notification.ledARGB = Color.BLUE; notification.ledOnMS =5000; //闪光时间,毫?? // 设置通知的事件消?? CharSequence contentTitle ="督导系统标题"; // 通知栏标?? CharSequence contentText ="督导系统内容"; // 通知栏内?? Intent notificationIntent =new Intent(MainActivity.this, MainActivity.class); // 点击该通知后要跳转的Activity PendingIntent contentItent = PendingIntent.getActivity(this, 0, notificationIntent, 0); notification.setLatestEventInfo(this, contentTitle, contentText, contentItent); // 把Notification传递给NotificationManager notificationManager.notify(0, notification); }? //删除通知 private void clearNotification(){ // 启动后删除之前我们定义的通知 NotificationManager notificationManager = (NotificationManager) this .getSystemService(NOTIFICATION_SERVICE); notificationManager.cancel(0); }} SyntaxHighlighter.autoloader( 'applescript/js/sh309/scripts/shBrushAppleScript.js?t=1451961936000', 'actionscript3 as3/js/sh309/scripts/shBrushAS3.js?t=1451961936000', 'bash shell/js/sh309/scripts/shBrushBash.js?t=1451961936000', 'coldfusion cf/js/sh309/scripts/shBrushColdFusion.js?t=1451961936000', 'cpp c/js/sh309/scripts/shBrushCpp.js?t=1451961936000', 'obj-c objc/js/sh309/scripts/shBrushObjC.js?t=1451961936000', 'c# c-sharp csharp/js/sh309/scripts/shBrushCSharp.js?t=1451961936000', 'css/js/sh309/scripts/shBrushCss.js?t=1451961936000', 'delphi pascal/js/sh309/scripts/shBrushDelphi.js?t=1451961936000', 'diff patch pas/js/sh309/scripts/shBrushDiff.js?t=1451961936000', 'erl erlang/js/sh309/scripts/shBrushErlang.js?t=1451961936000', 'groovy/js/sh309/scripts/shBrushGroovy.js?t=1451961936000', 'haxe hx/js/sh309/scripts/shBrushHaxe.js?t=1451961936000', 'java/js/sh309/scripts/shBrushJava.js?t=1451961936000', 'jfx javafx/js/sh309/scripts/shBrushJavaFX.js?t=1451961936000', 'js jscript javascript/js/sh309/scripts/shBrushJScript.js?t=1451961936000', 'perl pl/js/sh309/scripts/shBrushPerl.js?t=1451961936000', 'php/js/sh309/scripts/shBrushPhp.js?t=1451961936000', 'text plain/js/sh309/scripts/shBrushPlain.js?t=1451961936000', 'py python/js/sh309/scripts/shBrushPython.js?t=1451961936000', 'ruby rails ror rb/js/sh309/scripts/shBrushRuby.js?t=1451961936000', 'scala/js/sh309/scripts/shBrushScala.js?t=1451961936000', 'sql/js/sh309/scripts/shBrushSql.js?t=1451961936000', 'vb vbnet/js/sh309/scripts/shBrushVb.js?t=1451961936000', 'xml xhtml xslt html/js/sh309/scripts/shBrushXml.js?t=1451961936000' ); SyntaxHighlighter.all();

腾讯的qq邮箱插件,猜测你是在android qq或者iphone qq里面看到的。如果你安装了这个,那你就可以直接在里面看你的qq邮箱了,如果邮箱有新邮件,还会有通知提示内容来自www.zgxue.com请勿采集。

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