Swift Parse:如何将通知推送到特定设备/objectId [英] Swift Parse : How to Push Notification To a Specific Device/objectId

问题描述

我正在尝试向用户表中的特定用户推送通知，但我的功能不起作用，我不明白为什么.

i'm trying to push notification to a specific user in my User Table, but my function didn't work and i don't understand why.

func testPush(){
    let message = "Alert !!"
    let id = "88yhi9j0"

    var data = [ "title": "Some Title",
        "alert": message]

    var userQuery: PFQuery = PFUser.query()
    userQuery.whereKey("objectId", equalTo: id)
    var query: PFQuery = PFInstallation.query()
    query.whereKey("currentUser", equalTo: userQuery)

    var push: PFPush = PFPush()
    push.setQuery(query)
    push.setData(data)
    push.sendPushInBackground()
}

有人有想法吗?

推荐答案

问题在行:

query.whereKey("currentUser", equalTo: userQuery)

应该是:

query.whereKey("currentUser", matchesQuery: userQuery)

我希望这能解决问题.

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