swift3中的图像路径未转换为url

Question

我有回复我想从image_path下载图片

let fileUrl = NSURL(fileURLWithPath: (posts.value(forKey: "image_path") as! [String])[indexPath.row])
        print(fileUrl as Any) // here i can get path

        if FileManager.default.fileExists(atPath: (fileUrl)// nil value {
            let url = NSURL(string: (posts.value(forKey: "image_path") as! [String])[indexPath.row]) // Here url found nil
            let data = NSData(contentsOf: url! as URL)
            cell.LocationImage?.image = UIImage(data: data! as Data)
        }

更新：

S9.png

Answer 1

该 URL 不是本地文件路径 URL，也不是根据我的浏览器的有效 URL。

您在上面提供的 URL 在浏览器中返回服务器错误并且不返回图像。看截图

您需要确保图像可访问，并且 URL 首先实际上返回了图像响应。然后你需要下载图像。不确定您是否使用任何库，所以我将发布一个没有的示例。

//: Playground - noun: a place where people can play

import UIKit
import XCPlayground
import PlaygroundSupport

let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))

// random image from images.google.com
let urlString = "https://files.allaboutbirds.net/wp-content/uploads/2015/06/prow-featured-240x135.jpg"

let url = URL(string: urlString)
let session = URLSession.shared

let task = session.dataTask(with: url!) { data, response, error in
    guard error == nil else {
        print("[ERROR] - Failed to download image")
        return
    }

    if let data = data {
        let image = UIImage(data: data)
        DispatchQueue.main.async {
            imageView.image = image
        }
    }
}

let view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
view.addSubview(imageView)

task.resume()
PlaygroundPage.current.liveView = view

更新：