25_Downloading An Image
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FQ，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.tiananmen.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 tiananmen = UIImage(data: data!) {
self.image.image = tiananmen
}
})
*/
}
}
task.resume()
*/
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
