本文所写方法主要应用UILocalNotification达到本地推送通知栏信息
取消了其他教程里过期的UIAlertView方法
使用UILocalNotification主要分为创建 调用 取消 三个步骤
同时注意 如果调用[NSDate dateWithTimeIntervalSince1970:alertTime]这个方法 这个时间不是从显示1970年1月1日开始计算 而是1970年1月1日8点开始计算
具体详见格林威治时间相关信息
1.创建UILocalNotification 分别在AppDelegate和具体实现通知的Controller中写入以下代码 需要注意的是创建方法中的Key值 是用于后面取消时候的标记
AppDelegate - (void)applicationDidBecomeActive:(UIApplication *)application { // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. //取消徽章 [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0]; } #pragma mark 本地通知回调函数 当应用程序在前台时调用 - (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification { //更新显示的徽章个数 NSInteger badge = [UIApplication sharedApplication].applicationIconBadgeNumber; badge--; badge = badge >= 0 ? badge : 0; [UIApplication sharedApplication].applicationIconBadgeNumber = badge; }
Controller #pragma mark 本地通知功能 + (void)registerLocalNotification:(NSInteger)alertTime { //建立本地通知对象 UILocalNotification *notification=[[UILocalNotification alloc]init]; //设置触发通知的时间 NSDate *fireDate=[NSDate dateWithTimeIntervalSince1970:alertTime]; NSLog(@"触发通知的时间=%@",fireDate); notification.fireDate=fireDate; //设置时区 notification.timeZone=[NSTimeZone defaultTimeZone]; //设置重复的间隔 notification.repeatInterval=kCFCalendarUnitDay; //设置通知内容 notification.alertBody=@"早安哦~今天也很想你"; notification.applicationIconBadgeNumber=1; //通知被触发时播放的声音 notification.soundName=UILocalNotificationDefaultSoundName; //创建本地通知的info信息 用于取消通知 NSDictionary *info = [NSDictionary dictionaryWithObject:@"name"forKey:@"weather"]; notification.userInfo = info; //ios8后 需要添加这个注册 才能得到授权 if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)]) { UIUserNotificationType type = UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound; UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:type categories:nil]; [[UIApplication sharedApplication] registerUserNotificationSettings:settings]; //通知重复提示的单位 可以是天 周 月 notification.repeatInterval = NSCalendarUnitDay; } else { //通知重复提示的单位 可以是天 周 月 notification.repeatInterval = NSDayCalendarUnit; } // 执行通知注册 [[UIApplication sharedApplication] scheduleLocalNotification:notification]; } #pragma mark 取消某个本地通知 + (void)cancelLocalNotificationWithKey:(NSString *)key { //获取所有本地通知数组 NSArray *localNotifications = [UIApplication sharedApplication].scheduledLocalNotifications; for (UILocalNotification *notification in localNotifications) { NSDictionary *userInfo = notification.userInfo; if (userInfo) { //根据设置通知参数时指定的key来获取通知参数 NSString *info = userInfo[key]; //如果找到需要取消的通知,则取消 if (info != nil) { [[UIApplication sharedApplication] cancelLocalNotification:notification]; break; } } } }
2.调用UILocalNotification 因为上面代码把调用方法封装成了类方法 直接用相应的Controller类直接调用
#pragma mark 调用本地通知方法 - (void)localNotification { //调用本地通知方法 [MainViewController registerLocalNotification:p]; NSLog(@"开启本地通知"); }
3.取消UILocalNotification 取消方法同理 也是类方法的调用 根据定义时的方法中Key值取消相应的通知
-(void)notificationSwitch { if (noticeSwitch.on==YES) { //调用本地通知 [self localNotification]; NSLog(@"开启本地通知"); } if (noticeSwitch.on==NO) { [MainViewController cancelLocalNotificationWithKey:@"weather"]; NSLog(@"关闭本地通知"); } }
时间: 2024-10-28 09:45:38