在 ibaction 之后触发 segue

Question

我正在尝试在我的 IBAction 已经发生后执行 segue。这是我的代码，正如您所见，当我按下按钮时，我使用 alamofire 发出了一个获取请求。问题是请求是（据我所知）一个异步方法，所以如果 getPlayer 方法没有完成它应该做的事情，segue 将展开并执行 eve。我可以解决它的唯一方法是将 perfomrsegue 方法放在 if 语句中，我在其中检查 person.name 的值，但我必须按两次按钮，但我不知道如何解决这个问题!

@IBAction func getPlayerPressed(_ sender: UIButton) {

    userDefaults.set(tagTextField.text!, forKey: "userTag")
    let userTag = userDefaults.string(forKey: "userTag")
    getPlayerData(with: userTag!)
    performSegue(withIdentifier: "goToPlayerProfile", sender: self)
 }
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    let destionationVC = segue.destination as! PlayerProfileViewController
    destionationVC.playerName = player.name
    print(destionationVC.playerName)
    print("prepared for segue")
}


func getPlayerData (with tag: String) {
    let finalURL = baseURL + tag
    Alamofire.request(finalURL, headers: headers).responseJSON { (response) in
        if response.result.isSuccess {
            print("Got player data!")
            let playerJSON = JSON(response.result.value!)
            self.player.name = playerJSON["name"].stringValue
            print(self.player.name)
        } else {
            print("Error: \(response.result.error!)")
        }
    }

Answer 1

异步 alamofire 请求完成后执行 segue。

func getPlayerData (with tag: String) {
    let finalURL = baseURL + tag
    Alamofire.request(finalURL, headers: headers).responseJSON { (response) in
        if response.result.isSuccess {
            print("Got player data!")
            let playerJSON = JSON(response.result.value!)
            self.player.name = playerJSON["name"].stringValue
            print(self.player.name)
            DispatchQueue.main.async {
                self.performSegue(withIdentifier: "goToPlayerProfile", sender: self)
            }
        } else {
            print("Error: \(response.result.error!)")
        }
    }
}

在 ibaction 之后触发 segue

triggering segue after an ibaction

asynchronous

ibaction

ios

segue

swift