无法在 swift 2 中显示来自外部资产文件夹的 jpeg

Question

这可能是我无知的问题，但我只是想按照下面的代码显示图像...。

我没有收到任何错误。该图像存在，但未出现在模拟器中。如果我将路径字符串更改为不存在的图像，则会出现错误，因此我假设它正在正确找到图像。我错过了什么？

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var hotspotImage: UIImageView!
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        let path = "/Users/Mel/Library/Developer/CoreSimulator/Devices/5760868E-BC01-4021-9500-1D4C09FE5106/data/Containers/Data/Application/2E99C508-30E5-4C83-BC72-CBF141A64769/Documents/tours/22/HI2.jpg"
        let image = UIImage(contentsOfFile: path)
        hotspotImage = UIImageView(image: image!)
    }

}

Answer 1

而不是 hotspotImage = UIImageView(image: image!) 试试 hotspotImage.image = image!.

Answer 2

    let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
    let getImagePath = paths.stringByAppendingString("filename")
    testingImageView.image = UIImage(contentsOfFile: getImagePath)

Answer 3

您应该调用并提供文档目录的路径

let path = NSSearchPathForDirectoriesInDomains(
       .DocumentDirectory, .UserDomainMask, true)[0] as NSString
let fileName = NSUserDefaults.standardUserDefaults()
               .stringForKey("HI2.jpg") ?? defaultName
let imagePath = path.stringByAppendingPathComponent(fileName)!
let image = UIImage(contentsOfFile: imagePath )

// display the image
someImageView.image = image

无法在 swift 2 中显示来自外部资产文件夹的 jpeg

Cannot display jpeg from outside asset folder in swift 2

jpeg

uiimageview

uiimage

ios

swift