如何更改FBSDKLoginButton iOS 8.3 / Swift 1.2的默认设计？

问题描述

我目前正在使用App，而我需要更改Facebook SDK提供的Facebook按钮的默认设计。
我成功地让提供的按钮是透明的，并将其粘贴在设计视图之上，并且运行良好（现在的设计是匹配的，并且Facebook SDK按钮的功能正常运行）。
我的问题出现在我这样做后，因为按钮失去了它的Ui效果（没有突出点击）。
如果有人可以帮助我，我需要把这个设计按钮的突出显示效果。
让我们澄清一下：
我把UIView设计成按钮，我已经把一个透明的Facebook SDK按钮放在上面，结果是我的设计和Facebook按钮的功能同时形成了，失败了：

I'm working on App currently and I need to change the default design of Facebook button which is provided by Facebook SDK.I succeeded to let the provided button be transparent and stick it above over designed view , and it worked well(now the design is matched and the functionality of Facebook SDK button is working well).my problem turned up after I did that because the button lost it's Ui effects (no highlighting upon clicking).Please if any one can help me , I need to put highlighting effect to this designed button.Let clarify:I've UIView designed as button , I've put a transparent Facebook SDK button above it, the result is shape of my design and functionality of Facebook button at same time ,the loses : no highlighting effect upon clicking.

推荐答案

我尝试过以下代码，它以正确的方式提供了功能。但是我失败了在按下按钮时给予突出显示效果。
这里是代码：

I've tried the following code , it gives the functionality in right manner.However I failed to give the highlighting effect to the button upon clicking on it.here is the code :

{
    if (FBSDKAccessToken.currentAccessToken() != nil)
        {
            // if user logged in then handleTap func will run instead of button functionality
            let tap = UITapGestureRecognizer(target: self, action: "handleTap:")
            self.btnSignUpwithFaceBook.addGestureRecognizer(tap)

        }

        else
        {
            let loginView : FBSDKLoginButton = FBSDKLoginButton()
            self.view.addSubview(loginView)
            loginView.center = self.btnSignUpwithFaceBook.center
            loginView.frame.size.width = self.btnSignUpwithFaceBook.frame.width
            loginView.frame.size.height = self.btnSignUpwithFaceBook.frame.height
            loginView.frame.origin.x = self.btnSignUpwithFaceBook.frame.origin.x
            loginView.frame.origin.y = self.btnSignUpwithFaceBook.frame.origin.y

            for subView in loginView.subviews
            {
                subView.removeFromSuperview()
            }
            loginView.layer.shadowColor = UIColor.clearColor().CGColor

            loginView.setBackgroundImage(nil, forState: UIControlState.Normal)
            loginView.setBackgroundImage(nil, forState: UIControlState.Application)
            loginView.setBackgroundImage(nil, forState: UIControlState.allZeros)
            loginView.setBackgroundImage(nil, forState: UIControlState.Highlighted)
            loginView.setBackgroundImage(nil, forState: UIControlState.Reserved)
            loginView.setBackgroundImage(nil, forState: UIControlState.Selected)

            loginView.setImage(nil, forState: UIControlState.Normal)
            loginView.setImage(nil, forState: UIControlState.Application)
            loginView.setImage(nil, forState: UIControlState.allZeros)
            loginView.setImage(nil, forState: UIControlState.Highlighted)
            loginView.setImage(nil, forState: UIControlState.Reserved)
            loginView.setImage(nil, forState: UIControlState.Selected)

            loginView.backgroundColor = UIColor.clearColor()
            // just for test
            self.btnSignUpwithFaceBook.layer.borderWidth = 1
            self.btnSignUpwithFaceBook.layer.borderColor = UIColor.whiteColor().CGColor
            loginView.layer.backgroundColor = UIColor.clearColor().CGColor

            loginView.readPermissions = ["public_profile", "email", "user_friends"]
            loginView.delegate = self
            loginView.setTranslatesAutoresizingMaskIntoConstraints(false)

            var constX = NSLayoutConstraint(item: loginView, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: self.btnSignUpwithFaceBook, attribute: NSLayoutAttribute.CenterX, multiplier: 1, constant: 0)
            view.addConstraint(constX)

            var constY = NSLayoutConstraint(item: loginView, attribute: NSLayoutAttribute.CenterY, relatedBy: NSLayoutRelation.Equal, toItem: self.btnSignUpwithFaceBook, attribute: NSLayoutAttribute.CenterY, multiplier: 1, constant: 0)
            view.addConstraint(constY)

            let views = ["loginView": loginView]

            var constH = NSLayoutConstraint.constraintsWithVisualFormat("H:[loginView(57)]", options: NSLayoutFormatOptions(0), metrics: nil, views: views)
            view.addConstraints(constH)


            var constW = NSLayoutConstraint.constraintsWithVisualFormat("V:[loginView(281)]", options: NSLayoutFormatOptions(0), metrics: nil, views: views)

            view.addConstraints(constW)

}

实际上主要的问题是facebookLogInButton是FBSDK的自定义类，把它当成你按钮这就是为什么没有突出显示属性出现。
所以我想通过你的帮助找到它的要点是找到一种方法让我们将FacebookLoginButton视为uiButton在迅速。

actually the major problem is that facebookLogInButton is customized class for FBSDK and swift doesn't consider it as uiButton that's why no highlighting property appears.So the point I'm aiming to find it by your help guys is to find a way that let's facebookLoginButton to be considered as uiButton in swift.

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