使用 Parse Sdk 从应用推送通知

Question

我正在使用 parse sdk 向特定用户发送推送通知？ 问题是，如果接收者用户的应用程序在发送通知时正在运行，那么它工作正常，但如果接收者应用程序在发送推送通知时没有运行，它不会收到任何推送徽章或警报。我在做什么错？请看代码。` PFQuery *pushQuery = [PFInstallation query];

[pushQuery whereKey:Key_UserName equalTo:self.selectedBuddy.userName];

PFObject *object = [PFObject objectWithClassName:ClassName_Message];
object[Message_MessageText] = txtFieldMessage.text;
object[Message_SenderName] = applicationDelegate.userInfo.userName;
object[Message_ReceiverName] = self.selectedBuddy.userName;
[object saveInBackground];

NSDictionary *data = @{
                       Message_MessageText : txtFieldMessage.text,
                       Message_SenderName : applicationDelegate.userInfo.userName,
                       Message_ReceiverName : self.selectedBuddy.userName
                       };

// Send push notification to query
PFPush *push = [[PFPush alloc] init];
[push setQuery:pushQuery]; // Set our Installation query
[push  setData:data];
[push sendPushInBackground];
`

Answer 1

我认为问题是您没有正确设置推送查询，您需要查询安装..

需要这样的设置：

PFQuery *usernameQuery = [PFUser query];
                    [usernameQuery whereKey:@"username" equalTo:aName];
                    PFQuery *pushQuery = [PFInstallation query];
                    [pushQuery whereKey:@"user" matchesQuery:usernameQuery];

您还必须确保在您的安装中有一个用户名字段，即每次用户登录时您都需要：

 PFInstallation *installation = [PFInstallation currentInstallation];
                    installation[@"user"] = [PFUser currentUser];
                    [installation saveInBackground];

您的数据字典中没有“警报”也可能是一个问题。如果您希望推送正常工作，我认为这是必需的密钥，请尝试：

NSDictionary *data = @{@"alert": txtFieldMessage.text, Message_SenderName : applicationDelegate.userInfo.userName, Message_ReceiverName : self.selectedBuddy.userName, @"sound": @“”};