push-notification - 解析，如何向目标用户发送推送通知

Question

我已成功设置解析推送通知，并且在我的安装表中我同时拥有安装和设备 token 。我真正想做的是将推送通知发送给某些用户，而不是某些设备。如何将安装表绑定(bind)到使用表，以便我可以由用户进行查询并返回要推送到的设备ID

Answer 1

来自https://parse.com/docs/push_guide#top/iOS ，“使用高级定位”部分。

You can even create relationships between your Installation objects and other classes saved on Parse. To associate a PFInstallation with a particular user, for example, you can simply store the current user on the PFInstallation.

// Associate the device with a user
PFInstallation *installation = [PFInstallation currentInstallation];
installation[@"user"] = [PFUser currentUser];
[installation saveInBackground];

现在您可以在安装表上创建查询，其中“user”是您想要向其发送推送通知的用户。

最后，在构造推送对象时使用该查询。

Objective-C 中的示例(如果您使用其他语言发送推送，请进行相应调整):

PFQuery *pushQuery = [PFInstallation query];
[pushQuery whereKey:@"user" equalTo:someUser]; // where some user is the user object that is to receive a push notification

PFPush *push = [[PFPush alloc] init];
[push setQuery:pushQuery];
[push setMessage:@"Hi there!"];
[push sendPushInBackground];