使用解析[Parse IOS]从移动设备向特定用户发送推送通知

我已将用户指针保存在安装类中. Web后端显示0个订阅者

I have saved user pointer in instalation class. Web backend shows 0 subscribers

我正在使用以下代码发送通知

I am sending notification using below code

 PFQuery *qry = [PFUser query];
        [qry getObjectWithId:friendObject.objectId]; //friend object is ok like @"Fefl5x7nhl"

        PFQuery *pushQuery = [PFInstallation query];
        [pushQuery whereKey:@"user" matchesQuery:qry];

        // Send push notification to query
        PFPush *push = [[PFPush alloc] init];
        NSString *msgString=[NSString stringWithFormat:@"%@ :%@",
                             [newMessage objectForKey:@"userName"],
                             tfEntry.text];
        [push setQuery:pushQuery]; // Set our Installation query
        NSDictionary *data = [NSDictionary dictionaryWithObjectsAndKeys:
                              msgString, @"alert",
                              @"ursound.caf", @"sound",
                              @"Increment", @"badge",
                             // @"Optionally a type was set", @"type",
                              nil];
        [push setData:data];
       [push sendPushInBackground];

我的安装类确实具有该用户指针(朋友对象)，并且从逻辑上讲，它应该是通知的接收者.

My installation class does have this user pointer (friend object) and logically it should be receiver of the notification .

我错过了什么吗?任何建议都很好.感谢您的宝贵时间

AM i missing something? any suggestion would be great . Thanks for your valuable time