ArrayBuffer.getElementSlowPath 有人遇到过这个错误吗？

Question

在我的项目中，我向用户显示库图像和视频，但在某些设备中，我遇到了 ArrayBuffer.getElementSlowPath 这样的崩溃。谁能指导我如何复制这个问题？我从 Crashlytics 得到了这个问题。

这是我从阶段获取视频的代码。

 func getVideo(withCompletionHandler completion:@escaping CompletionHandler)  {
        let fetchOptions = PHFetchOptions()
        let requestOptions = PHVideoRequestOptions()
        requestOptions.isNetworkAccessAllowed = false
        fetchOptions.sortDescriptors = [NSSortDescriptor(key:"creationDate", ascending: false)]
        let fetchResult: PHFetchResult = PHAsset.fetchAssets(with: PHAssetMediaType.video, options: fetchOptions)

        fetchResult.enumerateObjects ({ (assest, index, isCompleted) in
            if assest.sourceType != PHAssetSourceType.typeiTunesSynced{
                PHImageManager.default().requestAVAsset(forVideo: assest , options: requestOptions, resultHandler: { (asset : AVAsset?, video : AVAudioMix?, dic : [AnyHashable : Any]?) in
                    if let _ = asset as? AVURLAsset
                    {
                        let objAssest = GallaryAssets()
                        objAssest.objAssetsType = assetsType.videoType
                        objAssest.createdDate = (assest ).creationDate
                        objAssest.assetsDuration = (assest ).duration
                        objAssest.assetsURL = (asset as! AVURLAsset).url
                        objAssest.localizationStr = assest.localIdentifier
                        objAssest.locationInfo = LocationInfo()
                        if let location = (assest).location
                        {
                            objAssest.locationInfo.Latitude = "\(location.coordinate.latitude)"
                            objAssest.locationInfo.Longitude = "\(location.coordinate.longitude)"
                        }

                        self.media.add(objAssest)
                    }
                    completion(self.media)
                   }                    
                })
            }
        })
    }
}

Answer 1

您要删除 completion 上的控制器吗？ enumerateObject 函数是同步执行的，如果你在它停止执行之前调用完成，并且 fetchResult 对象在函数结束执行之前被释放，这可能会导致问题。

尝试在枚举结束后调用完成块，如果你只想要一个结果，将isCompleted指针更改为true，这将停止枚举的执行：

func getVideo(withCompletionHandler completion:@escaping CompletionHandler)  {
        let fetchOptions = PHFetchOptions()
        let requestOptions = PHVideoRequestOptions()
        fetchOptions.sortDescriptors = [NSSortDescriptor(key:"creationDate", ascending: false)]
        let fetchResult: PHFetchResult = PHAsset.fetchAssets(with: PHAssetMediaType.video, options: fetchOptions)

        fetchResult.enumerateObjects ({ (assest, index, isCompleted) in
            if assest.sourceType != PHAssetSourceType.typeiTunesSynced{
                PHImageManager.default().requestAVAsset(forVideo: assest , options: requestOptions, resultHandler: { (asset : AVAsset?, video : AVAudioMix?, dic : [AnyHashable : Any]?) in
                    if let _ = asset as? AVURLAsset
                    {
                        let objAssest = GallaryAssets()
                        objAssest.objAssetsType = assetsType.videoType
                        objAssest.createdDate = (assest ).creationDate
                        objAssest.assetsDuration = (assest ).duration
                        objAssest.assetsURL = (asset as! AVURLAsset).url
                        objAssest.localizationStr = assest.localIdentifier
                        objAssest.locationInfo = LocationInfo()
                        if let location = (assest).location
                        {
                            objAssest.locationInfo.Latitude = "\(location.coordinate.latitude)"
                            objAssest.locationInfo.Longitude = "\(location.coordinate.longitude)"
                        }

                        self.media.add(objAssest)
                        isCompleted.pointee = true
                    }                    
                })
            }
        })
        completion(self.media)        
}

Answer 2

可能有些视频/资源来自 iCloud，您需要删除 PHVideorequestoptions 然后检查您的流程。希望你的崩溃能解决。

func getVideo(withCompletionHandler completion:@escaping CompletionHandler)  {
        let fetchOptions = PHFetchOptions()
        fetchOptions.sortDescriptors = [NSSortDescriptor(key:"creationDate", ascending: false)]
        let fetchResult: PHFetchResult = PHAsset.fetchAssets(with: PHAssetMediaType.video, options: fetchOptions)

        fetchResult.enumerateObjects ({ (assest, index, isCompleted) in
            if assest.sourceType != PHAssetSourceType.typeiTunesSynced{
                PHImageManager.default().requestAVAsset(forVideo: assest , options: **PHVideoRequestOptions**(), resultHandler: { (asset : AVAsset?, video : AVAudioMix?, dic : [AnyHashable : Any]?) in
                    if let _ = asset as? AVURLAsset
                    {
                        let objAssest = GallaryAssets()
                        objAssest.objAssetsType = assetsType.videoType
                        objAssest.createdDate = (assest ).creationDate
                        objAssest.assetsDuration = (assest ).duration
                        objAssest.assetsURL = (asset as! AVURLAsset).url
                        objAssest.localizationStr = assest.localIdentifier
                        objAssest.locationInfo = LocationInfo()
                        if let location = (assest).location
                        {
                            objAssest.locationInfo.Latitude = "\(location.coordinate.latitude)"
                            objAssest.locationInfo.Longitude = "\(location.coordinate.longitude)"
                        }

                        self.media.add(objAssest)
                        isCompleted.pointee = true
                    }                    
                })
            }
        })
        completion(self.media)        
}

Answer 3

我不能肯定地说这就是导致您崩溃的原因，但是对于在 Google 搜索结果中发现此问题的任何其他人：

我在 Crashlytics 中遇到了与 ArrayBuffer.getElementSlowPath 类似的神秘堆栈跟踪。经过多次调试后，我在本地重现了崩溃，结果发现类型化的 Swift 数组中有一个元素不是预期的类型。发生这种情况是因为所讨论的数组实际上是从 Objective-C 桥接而来的，后者对数组中的类型不那么严格。

ArrayBuffer.getElementSlowPath 有人遇到过这个错误吗？

ArrayBuffer.getElementSlowPath Does anyone face this error?

ios

swift

phasset