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。
iOS开发 - 继udid，Mac地址等一系列唯一标识无效后，如何用KeyChain来实现设备唯一性
