上一篇中最后提到一个缺陷，然后用读取推送队列中消息的方式来管理推送。
读取推送队列中所有的本地推送（和第三方的推送无关，不要混淆）：
NSArray *notiArray = [[UIApplication sharedApplication] scheduledLocalNotifications];
怎么把推送重新存储到本地推送的队列呢：
[UIApplication sharedApplication].scheduledLocalNotifications = notiNeedArray;
然后对于数据的处理其实和上一篇一样，变的地方有两个：
1）数据的存储问题；
2）如果存在其他本地推送，在不影响其他本地推送的情况下来处理此类本地推送；
声明：这里的方法使用的模型和上一篇一样，此处不再重复贴代码
下面来说明下对数据的处理方案：
+ (void)dealLocalPush:(NSArray *)pushInforArray { NSArray *tmpArray = [NSArray arrayWithArray:pushInforArray]; UILocalNotification *notification = [[UILocalNotification alloc] init]; //取出本地推送的队列中的推送消息（要知道一点，取出的是所有的本地推送记录，包括已经过期的，只要是在本地推送过的或者即将推送的，都可以取出来） NSArray *notiArray = [[UIApplication sharedApplication] scheduledLocalNotifications]; if (notiArray.count > 0) { NSMutableArray *notiArrayCopy = [NSMutableArray arrayWithArray:notiArray]; NSMutableArray *notiNeedArray = [[NSMutableArray alloc] init]; //取出未过期的消息 for (int i = 0; i < notiArrayCopy.count; i++) { UILocalNotification *notiDic = notiArrayCopy[i]; //这里要留意，取出的未过期的消息包括其他本地推送，直接取出，不作任何处理，以保证我们不影响以他本地推送的宗旨 if (![notiDic.userInfo objectForKey:@"msg_id"]) { [notiNeedArray addObject:notiDic]; } else { //下面的方法为对比时间获取未过期的推送，推送时间与当前时间的差值，大于0为还没到时间，等于0为到时间，开始推送，小于0为过期推送，可以用到的地方很多，如秒杀等。 NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; NSDate *date = [NSDate date]; int cha = [notiDic.fireDate timeIntervalSinceDate:date]; if (cha > 0) { [notiNeedArray addObject:notiDic]; } } } //过滤掉过期的推送后重新存入本地推送队列 [UIApplication sharedApplication].scheduledLocalNotifications = notiNeedArray; //存好后取出本地推送 notiArray = [[UIApplication sharedApplication] scheduledLocalNotifications]; } //若本地推送队列中无本地推送 if (notiArray.count == 0) { for (int i = 0; i < tmpArray.count; i++) { //下面是对消息的本地推送，上一篇博客中有提到，比较简单，参数要注意下。 LocalPushModel *localpushModel = tmpArray[i]; NSDateFormatter* dateFormat = [[NSDateFormatter alloc] init];//实例化一个NSDateFormatter对象 [dateFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"];//设定时间格式,这里可以设置成自己需要的格式 NSDate *date =[dateFormat dateFromString:localpushModel.send_time]; //进行推送 notification.timeZone = [NSTimeZone defaultTimeZone]; notification.fireDate = date; notification.alertTitle = [NSString stringWithFormat:@"%@",localpushModel.title]; notification.alertBody = [NSString stringWithFormat:@"%@",localpushModel.msg]; notification.alertLaunchImage = [NSString stringWithFormat:@"%@",localpushModel.image]; notification.alertAction = NSLocalizedString(@"查看", nil); NSMutableDictionary *dUserInfo = [[NSMutableDictionary alloc] init]; [dUserInfo setObject:@"3" forKey:@"type"]; [dUserInfo setObject:localpushModel.url forKey:@"value"]; [dUserInfo setObject:localpushModel.user_sid forKey:@"user_sid"]; [dUserInfo setObject:localpushModel.msg_id forKey:@"msg_id"]; if (localpushModel.icon == nil) { [dUserInfo setObject:@"icon" forKey:@"icon"]; } notification.userInfo = dUserInfo; [[UIApplication sharedApplication] scheduleLocalNotification:notification]; } } else { //读取通知数据并过滤userInfor中没有msg_id的数据 NSMutableArray *pushSaveArray = [[NSMutableArray alloc] init]; for (int i = 0; i < notiArray.count; i++) { UILocalNotification *notiDic = notiArray[i]; //这里需要根据特殊字段区分是哪一种本地推送，只操作我们需要的数据，你可以直接来操作取出来的这个数组，也可以像博主一样转模型后来操作 if ([notiDic.userInfo objectForKey:@"msg_id"]) { LocalPushModel *localpushModel = [[LocalPushModel alloc] init]; localpushModel.title = [NSString stringWithFormat:@"%@",notiDic.alertTitle]; localpushModel.msg = [NSString stringWithFormat:@"%@",notiDic.alertBody]; localpushModel.image = [NSString stringWithFormat:@"%@",notiDic.alertLaunchImage]; localpushModel.url = [NSString stringWithFormat:@"%@",[notiDic.userInfo objectForKey:@"value"]]; localpushModel.icon = [NSString stringWithFormat:@"%@",[notiDic.userInfo objectForKey:@"icon"]]; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; NSString *strDate = [dateFormatter stringFromDate:notiDic.fireDate]; localpushModel.send_time = [NSString stringWithFormat:@"%@",strDate]; localpushModel.user_sid = [NSString stringWithFormat:@"%@",[notiDic.userInfo objectForKey:@"user_sid"]]; localpushModel.msg_id = [notiDic.userInfo objectForKey:@"msg_id"]; [pushSaveArray addObject:localpushModel]; } } //过滤新请求的推送消息，进行去重（上面已经把过期的消息处理掉了），添加到一个新的数组中准备进行推送 NSMutableArray *newAddArray = [[NSMutableArray alloc] init]; for (int i = 0; i < tmpArray.count; i++) { LocalPushModel *newPushModel = tmpArray[i]; int num = 0; //拿新的消息和本地存储的消息一一比较，根据num，只要有msg_id相等就代表是同一条推送，num就会➕1，那这样的话就不会加入到‘需要推送的数组’ for (int j = 0; j < pushSaveArray.count; j++) { LocalPushModel *localpushModel = pushSaveArray[j]; if (newPushModel.msg_id == localpushModel.msg_id) { num++; } } if (num == 0) { [newAddArray addObject:newPushModel]; } } //上面拿到的是新消息中不重复的消息，需要对新的消息进行推送和保存 if (newAddArray.count > 0) { for (int i = 0; i < newAddArray.count; i++) { LocalPushModel *newPushModel = newAddArray[i]; //推送 NSDateFormatter* dateFormat = [[NSDateFormatter alloc] init];//实例化一个NSDateFormatter对象 [dateFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"];//设定时间格式,这里可以设置成自己需要的格式 NSDate *date =[dateFormat dateFromString:newPushModel.send_time]; //进行推送 notification.timeZone = [NSTimeZone defaultTimeZone]; notification.fireDate = date; notification.alertAction = NSLocalizedString(@"查看", nil); NSMutableDictionary *dUserInfo = [[NSMutableDictionary alloc] init]; notification.alertBody = [NSString stringWithFormat:@"%@",newPushModel.msg]; notification.alertTitle = [NSString stringWithFormat:@"%@",newPushModel.title]; notification.alertLaunchImage = [NSString stringWithFormat:@"%@",newPushModel.image]; [dUserInfo setObject:@"3" forKey:@"type"]; [dUserInfo setObject:newPushModel.url forKey:@"value"]; [dUserInfo setObject:newPushModel.msg_id forKey:@"msg_id"]; [dUserInfo setObject:newPushModel.user_sid forKey:@"user_sid"]; if (newPushModel.icon == nil) { [dUserInfo setObject:@"icon" forKey:@"icon"]; } notification.userInfo = dUserInfo; [[UIApplication sharedApplication] scheduleLocalNotification:notification]; } } } }
关于推送，尤其需要注意userInfor,和普通字典一样的，不能存储一个为nil的值。
代码的注释，每一步都写的很清楚了，看到这里，相信你已经学会了怎么来进行最佳的本地推送，觉得不错就留下你的评论吧。
