iOS Local Notification

以你之姓@ 2022-08-06 09:24 120阅读 0赞

做了很多有Push Notification和Locale Notification的app，来整理下开发的笔记。今天先说说Local Notification  
  
在iOS4.0后Apple加入了Local Notification。这里是NSLocaleNotification的Class Reference http://developer.apple.com/library/ios/\#documentation/iPhone/Reference/UILocalNotification\_Class/Reference/Reference.html  
如何注册一个Notification

UILocalNotification *localNotification = [[UILocalNotification alloc] init];
 
 // 设置notification的属性
 localNotification.fireDate = [startTimePicker.picker.date dateByAddingTimeInterval:36000]; //出发时间
 localNotification.alertBody = @"Time To Schedule Our Service"; // 消息内容
 localNotification.repeatInterval = NSSecondCalendarUnit; // 重复的时间间隔
 localNotification.soundName = UILocalNotificationDefaultSoundName; // 触发消息时播放的声音
 localNotification.applicationIconBadgeNumber = 1; //应用程序Badge数目
 
 //设置随Notification传递的参数
 NSDictionary *infoDict = [NSDictionary dictionaryWithObjectsAndKeys:@"reminder", @"notificationId", @"phone", txtPhone.text, nil];
 localNotification.userInfo = infoDict;
     
 [[UIApplication sharedApplication] scheduleLocalNotification:localNotification]; //注册
 [localNotification release]; //释放

撤销LocaleNotification

[[UIApplication sharedApplication] cancelAllLocalNotifications]; // 撤销所有的Notification 
 <pre name="code" class="cpp">[[UIApplication sharedApplication] cancelLocalNotification:notification]; // 撤销某个Notificiation，若要删除某个特定的Notification，则可以在UserInfo中加入标记，遍历所有的Notification来删除。</pre> 
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 响应事件 
 当Notification被触发后，你的应用需要对此作出反应。应用此时可能会处于以下几个状态： 
 <ul> 
 <li>在前台运行 - 当应用在前台运行时，则ApplicationDelegate的didReceiveLocalNotification会被调用。<pre name="code" class="cpp">- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification { 
 NSLog(@"Notification Body: %@", notification.alertBody); 
 NSLog(@"%@", notification.userInfo); 
 application.applicationIconBadgeNumber = notification.applicationIconBadgeNumber-1; 
 }</pre> 
 </li><li>在后台运行 - 用户可以看到类似Push Notification的提醒，若用户选择查看提醒详情，则应用通过 ApplicationDelegate的didFinishLaunchingWithOptions进入 
 <pre name="code" class="cpp">- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 
 UILocalNotification *localNotification = 
 [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey]; 
 if (localNotification) { 
 NSLog(@"Notification Body: %@",localNotification.alertBody); 
 NSLog(@"%@", localNotification.userInfo); 
 application.applicationIconBadgeNumber = localNotification.applicationIconBadgeNumber-1; 
 } 
 // set up everything else 
 return YES; 
 </pre>} 
 </li></ul>