我正在尝试在界面构建器中配置自定义UIView
并获取要呈现的视图。每次我尝试使用自定义Xib执行此操作时,我都可以在界面构建器中使xib看起来很好,但是当我尝试将MyCustomView
放入界面构建器中的UIVewController
时,我得到了各种编译器错误。
我看过的每个教程都是这样的:“只需在你的班级声明前添加@IBDesignable
,然后将@IBInspectable
放在你的vars面前,然后观察魔术的发生”(例子:WWDC 2015 video)。或者是Objective-C,或者是Aramaic的30分钟视频,带有中文字幕等。
我的最终目标是能够将UIView拖入,在身份检查器中分配我的自定义类,并让xib的内容填充我拖入的UIView,并能够调整@IBInspectable
属性。
我寻找答案的地方:
SO Post: @IBDesignable crashing agent
我得到的错误:
Base.lproj / Main.storyboard:错误:IB Designables:渲染失败 并更新PlaylistViewController(o1G-QR-OwX)的自动布局状态: 代理人崩溃了
Base.lproj / Main.storyboard:错误:IB Designables:无法更新 自动布局状态:代理崩溃
我想要出现在上面故事板底部的视图:
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
}
}
如果你已经做到这一点,谢谢你的阅读。如果你看到我所缺少的,我欢迎你的建议。
答案 0 :(得分:1)
我认为这是因为您错过了prepareForInterfaceBuilder
功能。
覆盖此功能,就像这样。
override func prepareForInterfaceBuilder() {
super.prepareForInterfaceBuilder()
//setup your view with the settings
}
OP附录:
将UIView
拖到YourViewController
并将其在Identity Inspector中的自定义类设置为YourCustomView
后,请确保选中“从目标继承”(从Xcode 8.x开始)