2 oauth vfl

• 布局第一个控件

• VFL
  字典中的V和H一定要大写

  let dict : [String:AnyObject] = ["iconView":iconView,"loginView":loginBTN]
    iconView.translatesAutoresizingMaskIntoConstraints = false
    addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.CenterX, multiplier: 1, constant: 0))
    addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.CenterY, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.CenterY, multiplier: 1, constant: 0))
    loginBTN.translatesAutoresizingMaskIntoConstraints = false
    addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:[iconView]-(10)-[loginView]", options: [], metrics: nil, views:dict ))
  

• 背景颜色

• 首页动画

  //lazy必须要用计算属性 有等号 = 就是计算属性  
  //并且    在尾部要加()
  private lazy var iconView : UIImageView = {
    let imageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    let anim = CABasicAnimation(keyPath: "transform.rotation")
    anim.toValue = 2 * M_PI
    anim.repeatCount = MAXFLOAT
    anim.duration = 20
    //不让动画释放
    anim.removedOnCompletion = false
    imageView.layer.addAnimation(anim, forKey: nil)   
    return imageView
  }()
  

• 不同控制器显示不同图片
  在visitor中创建loadInfo 方法 为外部提供修改内部字和图片的方法
  在baseController中 添加visitor属性
  每个一级控制器添加loadInfo方法,并赋值

• 监听方法
  给两个按钮添加代理 监听方法

• 加载oauth视图
  加载oauth的网址 放在网络工具类中,定义一个属性
  var authURL : NSURL {
  let url = "https://api.weibo.com/oauth2/authorize?client_id=(clientId)&redirect_uself.self.ri=(redirectUri)"

    return NSURL(string: url)!
  }
  

• 封装AFN

• 自动填充
  // 自动填充用户信息
  @objc private func autoFill() {
  let js = "document.getElementById('userId').value = 'xxxxxxxx@sina.cn';" +
  "document.getElementById('passwd').value = 'xxxxxx';"

  webView.stringByEvaluatingJavaScriptFromString(js)
  }
  

• 实现代理方法，跟踪重定向 URL
  返回

  **<NSMutableURLRequest: 0x7fca5ae4a4a0> { URL: https://api.weibo.com/oauth2/authorize?client_id=2075091997&redirect_uri=http://www.baidu.com }**
  **<NSMutableURLRequest: 0x7fca5d0545e0> { URL: https://api.weibo.com/oauth2/authorize }**
  **<NSMutableURLRequest: 0x7fca5af41e00> { URL: https://api.weibo.com/oauth2/authorize# }**
  **<NSMutableURLRequest: 0x7fca5add0950> { URL: https://api.weibo.com/oauth2/authorize }**
  **<NSMutableURLRequest: 0x7fca5aead420> { URL: http://www.baidu.com/?code=76a5c99f5e12685e18f760679eaff44a }**
  **<NSMutableURLRequest: 0x7fca5aebef80> { URL: https://m.baidu.com/?code=76a5c99f5e12685e18f760679eaff44a&from=844b&vit=fps }**
  **<NSMutableURLRequest: 0x7fca5d123d00> { URL: about:blank }**
  

可以发现code后面就是accesstoken
获取请求码

  func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {
    
    let urlString = request.URL!.absoluteString
    //1.判断URL开头是否是回调地址,如果是 则继续加载
    if !urlString.hasPrefix(NetworkingTools.sharedTools.redirectUri){
        return true
    }
    //2.是回调地址,截取code
    //query是回调URL 问号后面的所有字符串
    if let query = request.URL!.query where query.hasPrefix("code=") {
        let code = query.substringFromIndex("code=".endIndex)
        print(code)
    }else
    {
        //取消
    }
    return false
  }

• accesstoken
  得到code后 再发送给服务器 得到accesstoken
  在网络工具类中写loadaccestoken

  func loadAccessToken(code : String)->RACSignal{
    let urlstring = "https://api.weibo.com/oauth2/access_token"
  
    let param = ["client_id": clientId,
        "client_secret": appSecret,
        "grant_type": "authorization_code",
        "code": code,
        "redirect_uri": redirectUri]
    //提交 参数 用post
   return request(.post, urlString: urlstring, param: param)
  }
  

在oauth控制器中 订阅信号
func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {

    let urlString = request.URL!.absoluteString
    //1.判断URL开头是否是回调地址,如果是 则继续加载
    if !urlString.hasPrefix(NetworkingTools.sharedTools.redirectUri){
        return true
    }
    //2.是回调地址,截取code
    //query是回调URL 问号后面的所有字符串
    if let query = request.URL!.query where query.hasPrefix("code=") {
        let code = query.substringFromIndex("code=".endIndex)
        print(code)
        //发送请求 获取accesstoken
        //订阅信号
        NetworkingTools.sharedTools.loadAccessToken(code).subscribeNext({ (result) -> Void in
            print(result)
            //成功获得accesstoken
            }, error: { (error) -> Void in
                print(error)
            })