Swift3 IOS填充Twitter帖子

我正在寻找一些关于如何将文本填充到twitter帖子的帮助，使用下面的按钮，我可以得到一个标签，显示“00:35”的目标

当按钮被点击时，我想打开twitter，我可以计算出来，并填充它，为推特做好准备

@IBAction func goalClicked(_ sender: UIButton) {

        tempTimelineLbl.text = "\(stopWatchString)'  \("Goal for")"
}

我将使用下面的代码打开twitter

 let twUrl: URL = URL(string: "twitter://user?screen_name=\(club.twitter)")!
            let twUrlWeb: URL = URL(string: "https://twitter.com/\(club.twitter)")!

            if (UIApplication.shared.canOpenURL(twUrl)) {
                UIApplication.shared.open(twUrl, options: [:], completionHandler: {
                    (Sucess) in
                })
            } else {
                UIApplication.shared.open(twUrlWeb, options: [:], completionHandler: {
                    (Sucess) in
                })
    }

随后

@IBAction func goalClicked(_ sender: UIButton) {

        let stopWatchString = stopWatch.elapsedTimeSinceStart()
        stopwatchLabel.text = stopWatchString

        let vc = SLComposeViewController(forServiceType: SLServiceTypeTwitter)
        vc?.setInitialText("Some Test String")
        vc?.add(#imageLiteral(resourceName: "goal"))
        present(vc!, animated: true, completion: nil)

    }