如何在不使用parse.com创建频道的情况下将推送通知发送到特定设备？

Question

In my ios app, i am using Parse.com api there are two view controllers, view controller 1 presents my friends fb profile photos. View controller 2 presents the Friends profile. now i want to send push notification to my selected friend whose FB id i have. can i target a friend with fb id without creating channel?

i am trying following code,

//View Controller 1

//Register current user after login

-(void)registerUserForPushNotification
{
PFUser *user = [PFUser currentUser];
PFInstallation *currentInstallation = [PFInstallation currentInstallation];
[currentInstallation setObject:user forKey:@"Owner"];
[[PFUser currentUser] setObject:CurrentUserFacebookId forKey:@"fbId"];
[currentInstallation saveInBackground];
}


//View controller 2
//Send Push notification to  friend
-(void)sendPushNotification
{

// get the PFUser object for current user
PFQuery *userQuery=[PFUser query];
[userQuery whereKey:@"fbId" equalTo:ClientFBId];//ClientFBId is my friend's FB id

// send push notification to the user
PFQuery *pushQuery = [PFInstallation query];
[pushQuery whereKey:@"Owner" matchesQuery:userQuery];
PFPush *push = [PFPush new];
[push setQuery: pushQuery];
NSString *message=[[CurrentUserName stringByAppendingString:@" "]stringByAppendingString:@"sent you ilu"];    
[push setData: @{ @"alert":message}]; 
[push sendPush: nil];
}

i have searched the docs. everything is fine. it even shows my push notification on parse.com. but it says "You sent this push notification to 0 recipients." on top of the push notification tab on parse.com.

any guesses whats wrong?

please note:- i am not sending push notification to all the friends but only one friend at a time. so i guess, i dont have to create a channel.

Answer 1

Found out every step mentioned in my question was correct. neither code had issue. I noted that my app was not receiving device tokens on parse console.So i thought may be there's an issue with my certificate.

Regenerated the certificate with push notification configured and created provisioning profile again.

That got it working. Receiving device tokens on parse console now and getting push notifications. here's the link for step by step instructions. don't miss a single one.hope it helps you all !!!

Answer 2

Parse lets you send push messages through either channels, or direct to installations (devices).

What's important to realise is that a single user may have multiple installations associated with them - for example, they might own an iPhone and an iPad. You will want to send the push message to both.

It is hard to tell from what you've posted what's going on, as you've merged two view controllers together. I assume that in your second view controller user is the user you are trying to send the push notification to? How are you obtaining the PFUser object that represents the friend? Maybe share that code and you might get some more help.