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我正在使用分析pinInBackground
功能來保存稍後將與解析同步的信息,但其中一部分信息是已拍攝的照片,但在重新啓動應用程序之前info與Parse同步,圖像丟失。 當應用程序重新啓動時,如何不丟失圖片。 我必須將它保存在本地嗎?如果是這樣,在哪裏以及如何? 預先感謝您,讓我知道是否需要我的任何代碼。當應用程序重新啓動時,照片丟失並取消固定
//Here I pin the picture in the background
@IBAction func cameraButton(sender: AnyObject) {
imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = .Camera
presentViewController(imagePicker, animated:true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
let pickedImage:UIImage = info[UIImagePickerControllerOriginalImage] as! UIImage
let imageData = UIImageJPEGRepresentation(pickedImage, 0.5)
let imageFile:PFFile = PFFile(data: imageData)
locationLogs["photo"] = imageFile
locationLogs.pinInBackgroundWithBlock{ (success: Bool, error: NSError?) -> Void in
if (success) {
self.locationManager.stopUpdatingLocation()
}else{
println("error= \(error)")
}
}
imagePicker.dismissViewControllerAnimated(true, completion: nil)
}
//Query it
func queryAll() {
let query = PFQuery(className:"LocationLogs")
query.fromLocalDatastore()
query.findObjectsInBackgroundWithBlock({ (NSArray results, NSError error) in
if error == nil && results != nil {
println("array = \(results)")
self.tableData = results!
self.loggedItemsTableView.reloadData()
}else{
println("An error has occured= \(error)")
}
})
}
//Save and unpin it
@IBAction func syncAllButton(sender: AnyObject) {
PFObject.saveAllInBackground(self.tableData as [AnyObject], block: { (success: Bool, error: NSError?) -> Void in
if (success) {
PFObject.unpinAllInBackground(self.tableData as [AnyObject])
println("Pinned Data has successfully been saved")
}else{
println("error= \(error?.localizedDescription)")
}
})
}
你可以把你正在使用的代碼,試圖檢索固定的數據? –
我加了我的代碼(: – BENQ