我正在使用CloudKit来保存用户输入的记录,但是我的应用程序崩溃了。
以下是我的代码:
func saveRecordToCloud(_ pinpoint:Details!) -> Void {
// Prepare the record to save
let record = CKRecord(recordType: "Details")
record.setValue(pinpoint.title, forKey: "title")
record.setValue(pinpoint.location, forKey: "location")
record.setValue(pinpoint.date, forKey: "date")
// Resize the image
let originalImage = UIImage(data: pinpoint.image as Data)!
let scalingFactor = (originalImage.size.width > 1024) ? 1024 / originalImage.size.width : 1.0
let scaledImage = UIImage(data: pinpoint.image as Data, scale: scalingFactor)!
// Write the image to local file for temporary use
let imageFilePath = NSTemporaryDirectory() + pinpoint.title
try? UIImageJPEGRepresentation(scaledImage, 0.8)?.write(to: URL(fileURLWithPath: imageFilePath), options: [.atomic])
// Create image asset for upload
let imageFileURL = URL(fileURLWithPath: imageFilePath)
let imageAsset = CKAsset(fileURL: imageFileURL)
record.setValue(imageAsset, forKey: "image")
// Get the Public iCloud Database
let publicDatabase = CKContainer.default().publicCloudDatabase
// Save the record to iCloud
publicDatabase.save(record, completionHandler: { (record:CKRecord?, error:NSError?) -> Void in
// Remove temp file
do {
try FileManager.default.removeItem(atPath: imageFilePath)
} catch {
print("Failed to save record to the cloud: \(error)")
}
} as! (CKRecord?, Error?) -> Void)
}
我收到的错误是:
主题1:EXC_BAD_INSTRUCTION(代码= EXC_I386_INVOP,子代码= 0x0)
这是第} as! (CKRecord?, Error?) -> Void)
行,这是第二个。
我正在使用Swift 3.0
答案 0 :(得分:1)
当我将旧的Swift 2.x项目转换为Swift 3时,我遇到了同样的问题。他们使用CloudKit完成处理程序,而不是将它们转换为Swift 3 - 它将它保留在Swift 2中,然后进行转换它作为Swift 3的CKCompletionHandler。它总是导致崩溃。从完成处理程序的末尾删除显示as! (CKRecord?, Error?) -> Void)
的行。然后返回到您的实际完成处理程序并将其更改为如下所示:
publicDatabase.save(record, completionHandler: { (record:CKRecord?, error: Error?) in
// Remove temp file
do {
try FileManager.default.removeItem(atPath: imageFilePath)
} catch {
print("Failed to save record to the cloud: \(error)")
}
}
基本上你只需要将NSError
更改为Error
,就可以摆脱-> void
(返回无效)行。这是多余的。如果有效,请告诉我。