由于图像文件大小,Parse无法上传图像

Question

我在将图像上传到Parse时遇到问题.我认为问题可能与图像文件大小有关,但根据此链接

https://parse.com/questions/file-size-limit-in-uploads

每个文件最大可达10MB.我可以成功上传2个图像,每个图像为1.7MB,但是一旦我尝试上传2个大于2 MB的图像,呼叫就会永久停止.即使在等待5分钟加载图像后,应用程序也不会崩溃,只是无限加载."发布"对象保存正常,但图像未保存.

我已经包含了上传图像的相关代码,以便在下面进行解析.有人能让我知道我做错了什么吗？是否与我将图像保存到名为"Images"的类,然后将PFObject保存在列表中与其他图像,然后将该图像列表保存为"Post"类中​​的列有关？我希望能够直接访问与此帖子相关的图像,而无需进行额外的API调用来检索与帖子相关联的图像.如果有任何不清楚的地方,请告诉我.

var post = PFObject(className: "Post")
post["caption"] = captionTextField.text
post["user"] = PFUser.currentUser()

post.saveInBackgroundWithBlock{(success: Bool, error: NSError?) -> Void in

        if success == false {
            println("failed 1")

            self.activityIndicator.stopAnimating()
            UIApplication.sharedApplication().endIgnoringInteractionEvents()
        } else {

            let imageOneData = UIImagePNGRepresentation(self.imageOne)

            let imageOneFile = PFFile(name: "imageOne.png", data: imageOneData)

            let imageTwoData = UIImagePNGRepresentation(self.imageTwo)

            let imageTwoFile = PFFile(name: "imageTwo.png", data: imageTwoData)                

            var images: [PFFile] = [imageOneFile, imageTwoFile]

            var finishedUploads = 0

            var listOfImages : [PFObject] = []

            for var i = 0; i < images.count; i++ {
                var postImage = PFObject(className: "Images")
                postImage["image"] = images[i]
                postImage["postId"] = post.objectId
                postImage["likes"] = 0

                postImage.saveInBackgroundWithBlock{(success: Bool, error: NSError?) -> Void in


                    finishedUploads++

                    if success == false {
                        println("failed 3")
                    } else {
                        println("success 3")

                        println(postImage.objectId)


                        listOfImages.append(postImage)

                        if finishedUploads == images.count {


                            post["listOfImages"] = listOfImages

                            post.saveInBackgroundWithBlock{(success: Bool, error: NSError?) -> Void in

                                if success == false {
                                    println("failed 10")
                                } else {
                                    println("success 10")

                                    var storyboard : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)

                                    if let tabViewController = storyboard.instantiateViewControllerWithIdentifier("Home") as? UINavigationController {
                                        self.presentViewController(tabViewController, animated: true, completion: nil)
                                    } else {
                                        println("What should I do here?")
                                    }
                                }

                                self.activityIndicator.stopAnimating()
                                UIApplication.sharedApplication().endIgnoringInteractionEvents()
                            }
                        }
                    }
                }
            }

        }
    }

Answer 1

问题是我如何表示图像数据.它应该是

let imageOneData = UIImageJPEGRepresentation(self.imageOne, 0.5)

不

let imageOneData = UIImagePNGRepresentation(self.imageOne)

使用UIImagePNGRepresentation将图像数据上传到Parse后,图像文件大小增加到原始大小的3倍.我使用UIImageJPEGRepresentation成功上传了更大的图像(文档描述的最大10MB).