在swift中从本地获取图像

3 回答

• 0

  尝试类似的东西：

  let fileName = "profileImage.png"
  let path = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first! + "/" + fileName
  let image = UIImage(contentsOfFile: path)
  

  然后你可以把 image 放到 UIImageView .

  Other option （正如Leo Dabus在评论中提到的那样）：

  let fileName = "profileImage.png"
  let fileURL = NSURL(fileURLWithPath: NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first!).URLByAppendingPathComponent(fileName)
  if let imageData = NSData(contentsOfURL: fileURL) {
      let image = UIImage(data: imageData) // Here you can attach image to UIImageView
  }
  

  回复于 2024-05-06T08:15:21+08:00
• -1

  您可以使用NSFileManager的方法URLForDirectory来获取文档目录url和URLByAppendingPathComponent以将文件名附加到原始URL：

  if let fileURL = NSFileManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first?.URLByAppendingPathComponent("profileImage.png"),
      // get the data from the resulting url
      let imageData = NSData(contentsOfURL: fileURL),
      // initialise your image object with the image data
      let image = UIImage(data: imageData) {
      print(image.size)
  }
  

  回复于 2024-05-06T08:15:21+08:00
• 3

  在Swift 4.2中：

  func getImageFromDirectory (_ imageName: String) -> UIImage? {
  
      if let fileURL = FileManager().urls(for: .documentDirectory, in: .userDomainMask).first?.appendingPathComponent("\(imageName).png") {
          // get the data from the resulting url
          var imageData : Data?
          do {
               imageData = try Data(contentsOf: fileURL)
          } catch {
              print(error.localizedDescription)
              return nil
          }
          guard let dataOfImage = imageData else { return nil }
          guard let image = UIImage(data: dataOfImage) else { return nil }
          return image
      }
      return nil
  }
  

  回复于 2024-05-06T08:15:21+08:00