我已将 Widgetkit 添加到我的应用程序中，但现在当应用程序在 Xcode 12 beta 上启动时在 iOS 13 上崩溃

Question

I have added WidgetKit to my app but on iOS 13 devices it crashes when the app starts with this error: dyld`__abort_with_payload

The part of the code that causes the crash is this:

static func reloadTimelines () {  
 
    if #available(iOS 14, *) {

      WidgetCenter.shared.reloadTimelines(ofKind: "com.myDomain.myApp.ProgressWidget")
   }
}

I have tried other unsuccessful variations like this:

@available(iOS 14, *)
static func reloadTimelines () {

      WidgetCenter.shared.reloadTimelines(ofKind: "com.myDomain.myApp.ProgressWidget")
}

The project is in objective-c and I import that class in swift.

But without adding #import "myApp-Swift-h" anywhere, or using that class it keeps crashing.

Can someone tell me what I am doing wrong or what is happening?

Thanks in advance.

Edit: I try this code on Xcode 11 and work!

#if canImport(WidgetKit)
   WidgetCenter.shared.reloadTimelines(ofKind: "com.literautas.StoryPlanner.ProgressWidget")
#endif

But it crashes on Xcode 12 beta 4

Edit 2: It also crashes on Xcode 12 beta 6

Answer 1

Another person (thank you, Mark) gave me the solution. Marking the WidgetKit.framework as "optional" did the trick!

Answer 2

For those who are still having issues. Try these changes.

Make Optional Import

#if canImport(WidgetKit)
import WidgetKit
#endif

Check for iOS Version

if #available(iOS 14, *) {
     WidgetCenter.shared.reloadAllTimelines()
 }

Last Step - Most Imp

Add WidgetKit to the Build Phase -> Link Libraries and make it optional

I was missing doing the last step and then the code started working in iOS 13 as well.

Answer 3

We had

• #if canImport(WidgetKit)
• @available(iOS 14.0, *)
• and the WidgetKit as optional in our main target

And the crash was still happening, apparently even on iOS 14.

We moved all WidgetCenter calls to a single file with all the measures and an additional one:

• NSClassFromString("WidgetKit.WidgetCenter")

For some reason, we can't explain yet, this is actually returning nil for some cases . We prevented the crashes but in those cases, it means we can't really use the WidgetCenter API.