在iOS8之后，以前的本地推送写法可能会出错，接收不到推送的信息，
如果出现以下信息：
1 Attempting to schedule a local notification
2 with an alert but haven't received permission from the user to display alerts
3 with a sound but haven't received permission from the user to play sounds
说明在IOS8下没有注册，所以需要额外添加对IOS8的注册方法，API中有下面这个方法：
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// Registering UIUserNotificationSettings more than once results in previous settings being overwritten.
- (void)registerUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings NS_AVAILABLE_IOS(8_0);
这个方法是8.0之后才能使用的，所以需要判断一下系统的版本。
第一步：注册本地通知：
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// 设置本地通知
+ (void)registerLocalNotification:(NSInteger)alertTime {
UILocalNotification *notification = [[UILocalNotification alloc] init];
// 设置触发通知的时间
NSDate *fireDate = [NSDate dateWithTimeIntervalSinceNow:alertTime];
NSLog(@"fireDate=%@",fireDate);
notification.fireDate = fireDate;
// 时区
notification.timeZone = [NSTimeZone defaultTimeZone];
// 设置重复的间隔
notification.repeatInterval = kCFCalendarUnitSecond;
// 通知内容
notification.alertBody = @"该起床了...";
notification.applicationIconBadgeNumber = 1;
// 通知被触发时播放的声音
notification.soundName = UILocalNotificationDefaultSoundName;
// 通知参数
NSDictionary *userDict = [NSDictionary dictionaryWithObject:@"开始学习iOS开发了" forKey:@"key"];
notification.userInfo = userDict;
// 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] LocalNotification:notification];
}
第二步：处理通知，这个是在appdelegate中的代理 方法回调
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// 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 {
NSLog(@"noti:%@",notification);
// 这里真实需要处理交互的地方
// 获取通知所带的数据
NSString *notMess = [notification.userInfo objectForKey:@"key"];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"本地通知(前台)"
message:notMess
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
// 更新显示的徽章个数
NSInteger badge = [UIApplication sharedApplication].applicationIconBadgeNumber;
badge--;
badge = badge >= 0 ? badge : 0;
[UIApplication sharedApplication].applicationIconBadgeNumber = badge;
// 在不需要再推送时，可以取消推送
[HomeViewController cancelLocalNotificationWithKey:@"key"];
}
第三步：在需要的时候取消某个推送
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// 取消某个本地推送通知
+ (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;
}
}
}
}
下载demo:https://github.com/632840804/LocalPush