25_Downloading An Image

时间:2022-09-16 12:35:38

一个App,从网上下载一张图片(给出图片地址),重新命名,然后保存到手机中,再从手机中取出显示在屏幕上。

难度不大,就是找图片很蛋疼,百度搜索出来的过一会儿会失效,Google搜索出来的有些需要*,崩溃了。

还有一个是,Xcode由于可以自动补全,而某些方法名字很像,甚至三个单词以上组成的时候,只有中间某个单词不一样,于是就。。。

//
// ViewController.swift
// Downloading An Image
//
// Created by zcdll on 16/1/23.
// Copyright © 2016年 ZC. All rights reserved.
// import UIKit class ViewController: UIViewController { @IBOutlet weak var image: UIImageView! override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib. var documentsDirectory:String? var paths:[AnyObject] = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask,true) if paths.count > 0 { documentsDirectory = paths[0] as? String let savePath = documentsDirectory! + "/tam.jpg" self.image.image = UIImage(named: savePath) } /*
let url = NSURL(string: "http://www.*.org.cn/capinfo_product/NC_Admin/NCAdm-Media/uploadFile/20029293142.jpg") let task = NSURLSession.sharedSession().dataTaskWithURL(url!) { (data, response, error) -> Void in if error != nil { print(error) } else { var documentsDirectory:String? var paths:[AnyObject] = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask,true) if paths.count > 0 { documentsDirectory = paths[0] as? String let savePath = documentsDirectory! + "/tam.jpg" NSFileManager.defaultManager().createFileAtPath(savePath, contents: data, attributes: nil) dispatch_async(dispatch_get_main_queue(), { () -> Void in self.image.image = UIImage(named: savePath) }) } /*
dispatch_async(dispatch_get_main_queue(), { () -> Void in if let * = UIImage(data: data!) { self.image.image = * } })
*/
}
} task.resume()
*/ } override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
} }

项目:25_Downloading An Image