Question

我正在尝试创建自定义UITextField并设置自定义bordercolor。我也为borderColor创建了一个IBInspectable属性，如果我使用set和get方法，我可以使用Storyboard设置它。

现在我要做的是有一个预定义的边框颜色值（这是默认值）所以我试图调用didSet方法并在那里进行设置。我不知道该怎么做。默认值不起作用，如果我在我的故事板中导入行 -

，则会出错

self.layer.borderColor=(UIColor.KGColorPalette.entryBoxBorderColor as! CGColor)

故事板中的错误

错误：IB Designables：无法更新自动布局状态：代理崩溃

代码：

@IBDesignable class KGIBDesignableTextField: UITextField {

 @IBInspectable var borderColor: UIColor = UIColor.KGColorPalette.entryBoxBorderColor {
    didSet {
        setup()
    }
}


override func awakeFromNib() {
    super.awakeFromNib()
    setup()
}
override func layoutSubviews() {
    super.layoutSubviews()
    setup()
}
override func prepareForInterfaceBuilder() {
    super.prepareForInterfaceBuilder()
    setup()
}


func setup(){
    textColor = UIColor.KGColorPalette.textEntryFontColor
    self.layer.borderColor=(UIColor.KGColorPalette.entryBoxBorderColor as! CGColor)   
    backgroundColor=UIColor.KGColorPalette.entryBoxShadeFillColor
    font = UIFont(name: "Helvetica", size: 14)
    textAlignment = .left


}

}

如果它有用，我也检查了我的xcode Crash日志，它给出了以下错误 -

线程0崩溃： 0 com.kapsymtech.ios.KGCustomUIComponentsTarget 0x0000000116932dd8 _TFC26KGCustomUIComponentsTarget23KGIBDesignableTextField5setupfT_T_ + 152（KGIBDesignableTextField.swift：65） 1 com.kapsymtech.ios.KGCustomUIComponentsTarget 0x0000000116932acb _TFC26KGCustomUIComponentsTarget23KGIBDesignableTextFieldcfT5frameVSC6CGRect_S0_ + 331（KGIBDesignableTextField.swift：56） 2 com.kapsymtech.ios.KGCustomUIComponentsTarget 0x0000000116932ba7 _TToFC26KGCustomUIComponentsTarget23KGIBDesignableTextFieldcfT5frameVSC6CGRect_S0_ + 71 3 com.apple.IBCocoaTouchToolFoundation 0x0000000107a8fb23 - [UIView（IBCocoaTouchToolIntegration）initWithMarshalledValues：orderedKeys：ignoredKeys：globalMarshallingContext：] + 131 4 com.apple.IBCocoaTouchToolFoundation 0x0000000107aaf51c - [IBCocoaTouchToolObjectPackage initWithRequest：globalMarshallingContext：] + 3100 5 com.apple.IBCocoaTouchToolFoundation 0x0000000107aae143 + [IBCocoaTouchToolObjectPackage objectPackageFromRequest：] + 67 6 com.apple.IBCocoaTouchToolFoundation 0x0000000107ab1311 + [IBCocoaTouchToolObjectPackage decodeWithBinaryUnarchiver：] + 106 7 com.apple.dt.IBFoundation 0x000000010a493aa3 - [IBBinaryUnarchiver decodeObject] + 112 8 com.apple.dt.IBFoundation 0x000000010a51f724 - [IBObjectBasedMarshallingRequest initWithBinaryUnarchiver：] + 135 9 com.apple.dt.IBAutolayoutFoundation 0x000000010a3d73bb - [IBAutolayoutOperationMarshallingRequest initWithBinaryUnarchiver：] + 59 10 com.apple.dt.IBFoundation 0x000000010a48b335 + [NSObject（IBBinaryArchivingAdditions）decodeWithBinaryUnarchiver：] + 65 11 com.apple.dt.IBFoundation 0x000000010a493aa3 - [IBBinaryUnarchiver decodeObject] + 112 12 com.apple.dt.IBFoundation 0x000000010a559ffa - [IBMessageReceiveChannel deliverMessage：toTarget：withArguments：context：result：] + 393 13 com.apple.dt.IBFoundation 0x000000010a559a65 88- [IBMessageReceiveChannel runBlockingReceiveLoopNotifyingQueue：notifyingTarget：context：] _ block_invoke + 120 14 libdispatch.dylib 0x000000010dbe3792 _dispatch_client_callout + 8 15 libdispatch.dylib 0x000000010dbcc4e0 _dispatch_barrier_sync_f_slow_invoke + 292 16 libdispatch.dylib 0x000000010dbe3792 _dispatch_client_callout + 8 17 libdispatch.dylib 0x000000010dbcb247 _dispatch_main_queue_callback_4CF + 1041 18 com.apple.CoreFoundation 0x000000010bac1909 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 9 19 com.apple.CoreFoundation 0x000000010ba87ae4 __CFRunLoopRun + 2164 20 com.apple.CoreFoundation 0x000000010ba87016 CFRunLoopRunSpecific + 406 21 com.apple.Foundation 0x000000010a8f3600 - [NSRunLoop（NSRunLoop）runMode：beforeDate：] + 274 22 com.apple.dt.IBFoundation 0x000000010a525bbc - [IBAbstractPlatformTool startServingReceiveChannel：] + 465 23 com.apple.dt.IBFoundation 0x000000010a525d85 - [IBAbstractPlatformTool startServingWriteDescriptor：readDescriptor：] + 119 24 com.apple.dt.IBFoundation 0x000000010a52689e + [IBAbstractPlatformTool main] + 1186 25 IBDesignablesAgentCocoaTouch 0x0000000107a04ba7 main + 34 26 libdyld.dylib 0x000000010dc2c65d start + 1

Answer 1

将此行更改为：

self.layer.borderColor = UIColor.KGColorPalette.entryBoxBorderColor.cgColor

从：

self.layer.borderColor=(UIColor.KGColorPalette.entryBoxBorderColor as! CGColor)

您无法将UIColor转换为CGColor。像这样的强制转换会使应用程序崩溃。

创建自定义IBDesignable UITextField

1 个答案: