ios @IBDesignable 崩溃代理
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@IBDesignable crashing agent
提问by jbehrens94
When I write my own UIButton-extended class and make it @IBDesignable, I receive two errors in Interface Builder, namely:
当我编写自己的UIButton-extended class 并 make it 时@IBDesignable，我在 Interface Builder 中收到两个错误，即：
- Main.storyboard: error: IB Designables: Failed to update auto layout status: The agent crashed because the fd closed
- Main.storyboard: error: IB Designables: Failed to render instance of RandjeUIButton: The agent crashed
- Main.storyboard: error: IB Designables: Failed to update auto layout status: The agent crashed because the fd closed
- Main.storyboard：错误：IB Designables：无法呈现 RandjeUIButton 的实例：代理崩溃
Here is my code:
这是我的代码：
import UIKit
@IBDesignable
class RandjeUIButton: UIButton {
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
self.backgroundColor = UIColor.blackColor()
}
}
I am working in Xcode 7 beta 2 on OS X 10.11 beta 2. (Running in VM)
我在 OS X 10.11 beta 2 上使用 Xcode 7 beta 2。（在 VM 中运行）
回答by mathielo
Xcode's Interface Builder requires that you implement bothor neitherinitializers for @IBDesignableclasses to render properly in IB.
Xcode 的 Interface Builder 要求您为类实现两个或两个初始化器，@IBDesignable以便在 IB 中正确呈现。
If you implement required init(coder aDecoder: NSCoder)you'll need to override init(frame: CGRect)as well, otherwise "the agent will crash" as seen in the errors thrown by Xcode.
如果您实现，required init(coder aDecoder: NSCoder)您还需要覆盖init(frame: CGRect)，否则“代理将崩溃”，如 Xcode 抛出的错误所示。
To do so add the following code to your class:
为此，将以下代码添加到您的类中：
override init(frame: CGRect) {
super.init(frame: frame)
}
回答by Azure Yu
I've met the same problem and solved it this way:
我遇到了同样的问题并通过以下方式解决了它：
- The Problem：
- 问题：
error: IB Designables: Failed to update auto layout status: The agent crashed
错误：IB Designables：无法更新自动布局状态：代理崩溃
- Find the debug button in the inspection file and click it.
- 在检查文件中找到调试按钮并单击它。
Then the Xcode will tell you where the prolem is. In my case I drop the
IBDesignablebefore the class.Then I clean and rebuild it, the error disappeared
然后Xcode会告诉你问题在哪里。就我而言，我
IBDesignable在课前放弃了。然后我清理并重建它，错误消失了
回答by voidref
There are a myriad of problems that can cause this. Fire up Console, and look for the crash report IBDesignablesCocoaTouch...
有无数的问题会导致这种情况。启动控制台，并查找崩溃报告IBDesignablesCocoaTouch...
I just sorted out a problem with a 3rd party designable which had issues with the valueForKeysemantics.
我刚刚解决了一个与valueForKey语义有关的第 3 方设计的问题。
回答by Glenn Barnett
In Xcode 7.3, none of the above solutions worked for me, but the accepted answer to this question did: Failed to render instance of IB Designables
在 Xcode 7.3 中，上述解决方案都不适用于我，但对这个问题的公认答案是：无法呈现 IB Designables 的实例
- Clear Xcode derived data for the project. They are in ~/Library/Developer/Xcode/DerivedData
- Clean your current build by pressing ??K
- Build your project
- In storyboard go to Editor menu and do Refresh All Views; wait for build to be completed and errors should be gone
- 清除项目的 Xcode 派生数据。它们在 ~/Library/Developer/Xcode/DerivedData
- 按 ??K 清理您当前的构建
- 构建你的项目
- 在故事板中，转到编辑器菜单并刷新所有视图；等待构建完成，错误应该消失
I did not need to do the 4th step to solve the problem (and get my PaintCode-drawRect'd UIView to paint in the storyboard), included here just in case.
我不需要执行第 4 步来解决问题（并让我的 PaintCode-drawRect 的 UIView 在情节提要中绘画），这里包含以防万一。
Credit to @Mojtaba and @WeZZard
归功于@Mojtaba 和@WeZZard
回答by StuFF mc
For me, it was not using #if !TARGET_INTERFACE_BUILDERthat got me. Basically I had some code that would result in accessing a path in my Bundle...
对我来说，它没有#if !TARGET_INTERFACE_BUILDER得到我的使用。基本上我有一些代码会导致访问我的捆绑包中的路径......
Bundle.main.path(forResource: "Foo", ofType: "plist")
The problem is that when running in IB (and not in your app), Bundle.mainisn't your app...
问题是，当在 IB 中运行（而不是在您的应用程序中）时，Bundle.main您的应用程序不是...
(lldb) po Bundle.main
NSBundle </Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Xcode/Overlays> (loaded)
So the answer to this is simply to review your @IBDesignable UIViewcode carefully and use #if !TARGET_INTERFACE_BUILDERfor anything (in my case calls to CoreLocationfor example) that doesn't make sense when running at design time.
因此，对此的答案只是@IBDesignable UIView仔细检查您的代码并将#if !TARGET_INTERFACE_BUILDER其CoreLocation用于在设计时运行时没有意义的任何内容（例如在我的情况下调用）。
How I debugged and found this
我如何调试并找到这个
This is what you see when using the Editor -> Debug Selected Viewwhile selecting your @IBDesignable UIViewin your storyboard:
这是您在使用Editor -> Debug Selected Viewwhile@IBDesignable UIView在您的故事板中选择您时看到的内容：
You'll then crash at the right location
然后你会在正确的位置坠毁
In my case, as you can see initXXXXwas doing an assert, which was crashing at design time, because it was looking for a value in file in my Bundle?—?which is Xcode, at design time.
在我的例子中，正如你所看到的initXXXX那样assert，它在设计时崩溃了，因为它在我的 Bundle 中寻找文件中的值？-？这是 Xcode，在设计时。
回答by Adrien Yvon
I found something really important when using an UIImage in any class marked @IBDesignable. The classic UIImage init would crash the agent:
在任何标记为 @IBDesignable 的类中使用 UIImage 时，我发现了一些非常重要的东西。经典的 UIImage init 会使代理崩溃：
let myImage = UIImage(named: String) // crash the agent
The solution is to use this init method of UIImage:
解决方法是使用UIImage的这个init方法：
let myImage = UIImage(named: String, in: Bundle, compatibleWith: UITraitCollection)
Working code example:
工作代码示例：
let appBundle = Bundle(for: type(of: self))
let myImage = UIImage(named: "myImage", in: bundle, compatibleWith: self.traitCollection))
Where self is your class with the @IBDesignable keyword. Xcode 9.4, Swift 4.1
其中 self 是带有 @IBDesignable 关键字的类。Xcode 9.4，斯威夫特 4.1
回答by escapedcanadian
XCode 10, Swift 4.2
XCode 10，斯威夫特 4.2
I found an answer here
我在这里找到了答案
Solution was simple - changing the way the bundle was resolved in the required init?(coder aDecoder: NSCoder)method of my custom view class.
解决方案很简单 - 在required init?(coder aDecoder: NSCoder)我的自定义视图类的方法中更改包的解析方式。
Bundle.main.loadNibNamed(String(describing: TestView.self), owner: self, options: nil)
needed to be changed to
需要改为
let bundle = Bundle(for: TestView.self)
bundle.loadNibNamed(String(describing: TestView.self), owner: self, options: nil)
回答by Charmi
Just re-open a code on another Xcode setup System. In my case it Worked.
只需在另一个 Xcode 设置系统上重新打开一个代码。就我而言，它有效。
回答by Sam
I wasted a full day on this and finally I got my problem solved 
我为此浪费了一整天，终于解决了我的问题
I selected Build for target as 8.0 and it fixes everything for me.
我选择 Build for target 作为 8.0，它为我修复了所有问题。
回答by vikram jeet singh
This is how I solves this problem:
这是我解决这个问题的方法：
- Make sure the outlets are properly initialized
- @IBInspectable properties would be properly initialized
- in xib file, click on File's owner placeholder, Go to Identity inspector, make sure it wont have any default values
- 确保插座已正确初始化
- @IBInspectable 属性将被正确初始化
- 在 xib 文件中，单击文件的所有者占位符，转到身份检查器，确保它没有任何默认值
import UIKit
@IBDesignable class TestView: UIView {
@IBOutlet weak var label: UILabel!
@IBInspectable var textLabel1: String? {
get {
return label.text
}
set {
label.text = newValue
}
}
// MARK: Setup
var view1: UIView!
var nibName: String = "TestView"
override init(frame: CGRect) {
super.init(frame: frame)
xibSetup()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
xibSetup()
}
private func xibSetup() {
view1 = loadViewFromNib()
view1?.frame = self.bounds
view1?.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
if view1 != nil {
addSubview(view1!)
//textLabel1 = "ok"
}
}
private func loadViewFromNib() -> UIView? {
let bundle = NSBundle(forClass: self.dynamicType)
let nib = UINib(nibName: nibName, bundle: bundle)
for object in nib.instantiateWithOwner(self, options: nil) {
if let view: UIView = object as? UIView {
return view
}
}
return nil
}
}Usage:
用法：
