我试图在界面生成器中配置自定义UIView
并获取视图进行渲染。每次我尝试使用定制的Xib来做这件事时,我都可以在界面构建器中使xib看起来很好,但是当我试图在界面生成器中将MyCustomView
放入UIVewController
时,出现各种编译器错误。获取@IBDesignable UIView绘制时不会崩溃界面生成器
每个教程中,我已经看了是这样的:“就在你的类声明的前面加上@IBDesignable
,把@IBInspectable
在瓦尔的前面,然后看魔术发生”(例如:WWDC 2015 video)。或者它在Objective-C中,或者它是一个带有中文字幕的阿拉姆语的30分钟视频等。
我的最终目标是能够拖放UIView,在身份检查器中指定我的自定义类,并获得xib填入我拖入的UIView并能够调整@IBInspectable
属性。
当我看着答案:
SO Post: @IBDesignable crashing agent
错误,我得到:
Base.lproj/Main.storyboard: error: IB Designables: Failed to render and update auto layout status for PlaylistViewController (o1G-QR-OwX): The agent crashed
Base.lproj/Main.storyboard: error: IB Designables: Failed to update auto layout status: The agent crashed
身份检查我CurrentlyPlayingView
: 了我后,我的观点
,我试图去出现在上述底部的观点故事板:
我的代码:
import UIKit
@IBDesignable class CurrentlyPlayingView: UIView {
var view = UIView()
@IBOutlet weak var titleLabel: UILabel!
@IBOutlet weak var subtitleLabel: UILabel!
@IBOutlet weak var progressSlider: UISlider!
// IBInspectable attributes
@IBInspectable public var titleLabelColor: UIColor = .black {
didSet {
self.titleLabel.textColor = titleLabelColor
}
}
@IBInspectable public var subtitleLabelColor: UIColor = .black {
didSet {
self.subtitleLabel.textColor = subtitleLabelColor
}
}
@IBInspectable public var sliderMinColor: UIColor = .blue {
didSet {
self.progressSlider.minimumTrackTintColor = sliderMinColor
}
}
@IBInspectable public var sliderMaxColor: UIColor = .red {
didSet {
self.progressSlider.maximumTrackTintColor = sliderMaxColor
}
}
// MARK: - Initialization
override init(frame: CGRect) {
super.init(frame: frame)
xibSetup()
initialConfig()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
xibSetup()
initialConfig()
}
private func initialConfig() {
self.titleLabel.textColor = titleLabelColor
self.subtitleLabel.textColor = subtitleLabelColor
self.progressSlider.minimumTrackTintColor = sliderMinColor
self.progressSlider.maximumTrackTintColor = sliderMaxColor
}
// MARK: - Nib handlers
private func xibSetup() {
view = loadViewFromNib()
view.frame = bounds
// Make the view stretch with containing view
view.autoresizingMask = [UIViewAutoresizing.flexibleWidth, UIViewAutoresizing.flexibleHeight]
// Adding custom subview on top of our view (over any custom drawing > see note below)
addSubview(view)
}
private func loadViewFromNib() -> UIView {
let bundle = Bundle(for: type(of: self))
let nib = UINib(nibName: "CurrentlyPlayingView", bundle: bundle)
// Assumes UIView is top level and only object in CustomView.xib file
let view = nib.instantiate(withOwner: self, options: nil).first as! UIView
return view
}
}
如果你已经做到了这一点,感谢您的阅读。如果你看到我错过了什么,我欢迎你的建议。
我在你的实现中看不到'prepareForInterfaceBuilder'函数。 –