swift - 在 Swift 中使用 Parse 获取 Twitter 个人资料图片

Question

在 Swift 中没有找到任何关于此的信息，所以我在问! 如何使用 Parse 从 Twitter 获取已登录用户的个人资料图片？

用户已经通过解析内部 login-/signupController 登录

var username = PFUser.currentUser()?.username

图像应存储在 UIImage 变量中

Answer 1

A这里是 Swift 版本。我不得不将用户名从 Parse 更改为 PFTwitter 的 screenName，并添加一行以获得图片的最高分辨率版本。请注意，当我在登录后使用它来填充注册屏幕时，这将测试应用程序帐户是否已连接到 Twitter 帐户。即使在创建帐户后添加了链接，这也很可能会起作用。

    if PFTwitterUtils.isLinkedWithUser(PFUser.currentUser()!) {

        let screenName = PFTwitterUtils.twitter()?.screenName!

        let requestString = ("https://api.twitter.com/1.1/users/show.json?screen_name=" + screenName!)

        let verify: NSURL = NSURL(string: requestString)!

        let request: NSMutableURLRequest = NSMutableURLRequest(URL: verify)

        PFTwitterUtils.twitter()?.signRequest(request)

        var response: NSURLResponse?
        var error: NSError?

        let data: NSData = NSURLConnection.sendSynchronousRequest(request, returningResponse: &response, error: &error)!

        if error == nil {

            let result = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.AllowFragments, error: &error)


            let names: String! = result?.objectForKey("name") as! String

            let separatedNames: [String] = names.componentsSeparatedByString(" ")

            self.firstName = separatedNames.first!
            self.lastName = separatedNames.last!


            let urlString = result?.objectForKey("profile_image_url_https") as! String

            let hiResUrlString = urlString.stringByReplacingOccurrencesOfString("_normal", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)


            let twitterPhotoUrl = NSURL(string: hiResUrlString)
            let imageData = NSData(contentsOfURL: twitterPhotoUrl!)
            let twitterImage: UIImage! = UIImage(data:imageData!)
    }

您可能想添加类似这样的内容来准备一个 PFFile 来保存给您的新用户!

            let cgImage = twitterImage.CGImage

            let bitsPerComponent = CGImageGetBitsPerComponent(cgImage)
            let bytesPerRow = CGImageGetBytesPerRow(cgImage)
            let colorSpace = CGImageGetColorSpace(cgImage)
            let bitmapInfo = CGImageGetBitmapInfo(cgImage)

            let context = CGBitmapContextCreate(nil, 300, 300, bitsPerComponent, bytesPerRow, colorSpace, bitmapInfo)

            CGContextSetInterpolationQuality(context, kCGInterpolationHigh)

            CGContextDrawImage(context, CGRect(origin: CGPointZero, size: CGSize(width: CGFloat(300), height: CGFloat(300))), cgImage)

            let scaledImage = UIImage(CGImage: CGBitmapContextCreateImage(context))

            let imageUIImage = UIImageJPEGRepresentation(scaledImage, 0.6)
            let imageFile: PFFile = PFFile(name: (PFUser.currentUser().objectId! + "profileImage.jpg"), data:imageUIImage)