ios - 线程 8 : Signal SIGABRT When performing a segue

Question

当我保存视频时，会发生这种情况，我也试图连接到另一个 View Controller 。我不确定为什么应用程序在这里崩溃

func finalExportCompletion(_ session: AVAssetExportSession) {
    PhotoManager().saveVideoToUserLibrary(fileUrl: session.outputURL!) { (success, error) in
        if success {
            ProgressHUD.showSuccess("Video Saved", interaction: true)
            self.finalVideo = session.outputURL!
            //FileManager.default.clearTmpDirectory()
            self.clipsCollectionView.reloadData()
        } else {
            ProgressHUD.show(error?.localizedDescription)
        }
        self.performSegue(withIdentifier: "toPostVideoViewController", sender: nil)
    }
}

Answer 1

当您处于后台线程时，您的崩溃是由于 UI 中的修改而导致的，正如您的崩溃日志所述，@rmaddy 在他的评论中，THREAD 8 是一个后台线程，您需要执行所有您的线程 1 中的 UI 操作是“主线程”，您必须像这样修改代码

func finalExportCompletion(_ session: AVAssetExportSession) {
    PhotoManager().saveVideoToUserLibrary(fileUrl: session.outputURL!) { (success, error) in
        DispatchQueue.main.async{
            if success {
                ProgressHUD.showSuccess("Video Saved", interaction: true)
                self.finalVideo = session.outputURL!
                //FileManager.default.clearTmpDirectory()
                self.clipsCollectionView.reloadData()
            } else {
                ProgressHUD.show(error?.localizedDescription)
            }
            //I don't know if you anyway want to go to "toPostVideoViewController" this you need to do it also in main thread
            self.performSegue(withIdentifier: "toPostVideoViewController", sender: nil)
        }
    }
}