Question

我正在从Gallery

中通过UIImagepicker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 < / p>

现在我想从此路径加载此图片。

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)

但我在线上崩溃了

let imageData = NSData(contentsOfURL:url)!

如何解决此问题？它可以在设备上运行吗？

Answer 1

如果要将图像存储在文档目录中，则只存储数据库中的图像名称

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

import java.io.File;
import java.util.Scanner;

/**
 * This is some comment.
 * @author John Doe
 */
public class Prog3a {

    /**
     * The main method executes and runs the program.
     * @param args takes in vargs from the CLI
     */
    public static void main(String[] args) {
        System.out.println("Program 3, John Doe");
        if(args.length != 2) {
            System.err.println("Usage: java prog3a infilename searchword");
            return;
        }

        try {
            final Scanner scan = new Scanner(new File(args[0]));
            System.out.println("Opened file " + args[0] + " to search for '" + args[1] + "'");
            scan.close();
        } catch(java.io.FileNotFoundException e) { // need to make this valid
            System.err.println("File not found: " + args[1]);
        }
    }

}

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

Answer 2

我已经回答了类似的问题here。您只需要将这些路径保存到数据库中，然后从数据库路径中检索这些图像。

Answer 3

将图像保存在从图库或相机中获取的文档目录中。

\d{5}

从数据库加载图像

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

3 个答案: