2016-11-24 96 views
-4

有两个错误我卡住了。我得到这个错误,当我打开我的项目在新的xcode 8 swift 3.0我不知道如何纠正这个错误。我已经解决了一些其他的错误。但是为了上面提到的错误,在这里发现了这个问题。有条件绑定的初始化必须有可选类型,而不是'CGFloat'

func keyboardWillShow(_ notification: Notification) { 
     keyboardHasBeenShown = true 

     guard let userInfo = (notification as NSNotification).userInfo else {return} 
     guard let endKeyBoardFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as AnyObject).cgRectValue.minY else {return} 

     if tmpContentViewFrameOrigin == nil { 
     tmpContentViewFrameOrigin = self.contentView.frame.origin 
     } 

     if tmpCircleViewFrameOrigin == nil { 
     tmpCircleViewFrameOrigin = self.circleBG.frame.origin 
     } 

     var newContentViewFrameY = self.contentView.frame.maxY - endKeyBoardFrame 
     if newContentViewFrameY < 0 { 
      newContentViewFrameY = 0 
     } 
     let newBallViewFrameY = self.circleBG.frame.origin.y - newContentViewFrameY 
     self.contentView.frame.origin.y -= newContentViewFrameY 
     self.circleBG.frame.origin.y = newBallViewFrameY 
    } 

在这种上述方法:

我的错误是在下面行:

guard let endKeyBoardFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as AnyObject).cgRectValue.minY else {return} 

错误:

Initializer for conditional binding must have Optional type, not 'CGFloat' 

在此以下方法第二错误:

open func showCustom(_ title: String, subTitle: String, color: UIColor, icon: UIImage, closeButtonTitle:String?=nil, duration:TimeInterval=0.0, colorStyle: UInt=SCLAlertViewStyle.success.defaultColorInt, colorTextButton: UInt=0xFFFFFF, circleIconImage: UIImage? = nil, animationStyle: SCLAnimationStyle = .topToBottom) -> SCLAlertViewResponder { 


     var red: CGFloat = 0, green: CGFloat = 0, blue: CGFloat = 0, alpha: CGFloat = 0 

     color.getRed(&red, green: &green, blue: &blue, alpha: &alpha) 

     var colorAsUInt32 : UInt32 = 0 
     colorAsUInt32 += UInt32(red * 255.0) << 16 + UInt32(green * 255.0) << 8 + UInt32(blue * 255.0) 

     let colorAsUInt = UInt(colorAsUInt32) 

     return showTitle(title, subTitle: subTitle, duration: duration, completeText:closeButtonTitle, style: .success, colorStyle: colorAsUInt, colorTextButton: colorTextButton, circleIconImage: icon, animationStyle: animationStyle) 
    } 

错误在这行:

colorAsUInt32 += UInt32(red * 255.0) << 16 + UInt32(green * 255.0) << 8 + UInt32(blue * 255.0) 

错误:

表达过于复杂,在合理的时间内得到解决;考虑分手的表达成不同的子表达式

+1

的可能的复制[条件结合初始化程序必须有可选的类型,而不是“字符串”(HTTP://计算器.com/questions/32768274/initializer-for-conditional-binding-must-have-optional-type-not-string) –

+0

看看http://stackoverflow.com/questions/25451001/getting-keyboard-size-从swift 2 + 3代码的userinfo-in-swift中获取通知的键盘大小。 –

+2

请不要在一个问题中发布两个完全无关的问题。 –

回答

1

需要加问号:

guard let endKeyBoardFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as? AnyObject).cgRectValue.minY else {return} 

colorAsUInt32 += UInt32(red * 255.0) << 16 
colorAsUInt32 += UInt32(green * 255.0) << 8 
colorAsUInt32 += UInt32(blue * 255.0) 
+0

,请帮我解决第二个错误。 – mack

+1

@mack分解表达式。 –

+0

我只是在5天之前才接触ios。这个项目受到我的老开发人员的打击。所以我不知道如何为此分手。 – mack

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