从UIImagePickerViewController给出的路径加载图像表格swift？-Java 学习之路

我正在通过UIImagepicker从Gallery中保存数据库返回路径

let imageURL = info[UIImagePickerControllerReferenceURL] as! NSURL
            let imageName = imageURL.lastPathComponent
            let documentDirectory = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first! as String

            //let localPath = documentDirectory.stringByAppendingPathComponent(imageName!)

            let imagePath = String("\(documentDirectory)/\(imageName!)")

路径看起来像

/Users/kshitijghule/Library/Developer/CoreSimulator/Devices/3AC7B500-E980-4A00-BC32-34FA3C7DDE8A/data/Containers/Data/Application/838FB5A1-4448-46C9-8BEC-2E939668B97D/Documents/asset.JPG

现在我想从这条路径加载这个图像 .

i used this code 


   let url = NSURL(string:"/Users/kshitijghule/Library/Developer/CoreSimulator/Devices/3AC7B500-E980-4A00-BC32-34FA3C7DDE8A/data/Containers/Data/Application/838FB5A1-4448-46C9-8BEC-2E939668B97D/Documents/asset.JPG")!//path from database but mention static 
     let imageData = NSData(contentsOfURL:url)!   
   cell?.petImageView.image = UIImage(data: imageData)

但我正在崩溃

let imageData = NSData(contentsOfURL:url)!

如何解决这个问题？它可以在设备上工作吗？

3 回答

如果要在文档目录中存储图像，则仅在db中存储图像名称

在检索时，使用您在保存时完成的图像名称附加当前文档目录路径

let documentDirectory = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first! as String

//let localPath = documentDirectory.stringByAppendingPathComponent(imageName!)
//imageName which you have stored in the db at retrieval time
let imagePath = String("\(documentDirectory)/\(imageName!)")

let url = NSURL(string:imagePath)
let imageData = NSData(contentsOfURL:url)!

因为如果发现模拟器的应用程序编号（838FB5A1-4448-46C9-8BEC-2E939668B97D）是导致问题的更改，我最后也会遇到此类问题

希望这可以解决您的问题

回复于 2024-05-03T23:21:12+08:00

0

我已经回答了类似的问题here . 您只需将这些路径保存到数据库，并从数据库路径中检索这些图像 .

回复于 2024-05-03T23:21:12+08:00

将图像保存在从图库或相机中获取的文档目录中 .

func origionalImage(origionalImage: UIImage!, editedImage: UIImage!, userInfo info: [NSObject : AnyObject]!) {

            let imageData = NSData(data:UIImagePNGRepresentation(origionalImage)!)
            let paths = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
            let docs: String = paths[0]

            let imageName = self.randomStringWithLength(6) as String
            //imageName can save in sqlite to load image later
            let fullPath = String("\(docs)/\(imageName).png")
             print(fullPath)
            let result = imageData.writeToFile(fullPath, atomically: true)
            print("FILE WRITTEN SUCCESS=>:\(result)")
}

从数据库加载图像

let tempDBObject = self.petListArray[indexPath.row] as! Database
        cell?.petName.text = tempDBObject.Hname
        //Doc Path
        let documentDirectory = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first! as String
        let imagePath = String("\(documentDirectory)/\(tempDBObject.Hpath!)")
        if imagePath == "" {
        }else{
           cell?.petImageView.image = UIImage(contentsOfFile: imagePath)
        }

回复于 2024-05-03T23:21:12+08:00

从UIImagePickerViewController给出的路径加载图像表格swift？

3 回答

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