对于iOS 中调用系统相册的功能，我想大家都比较熟悉了，但是Swift语言调用可能很多伙伴们不是很清楚，毕竟Swift是一门新语言，所以语法和实现方法可能不是很清楚，所以今天做了一个demo，大家可以做一下参考。

//

//  ViewController.swift

//  iOS

//

//  Created by 悦兑科技 on 15/1/12.

//  Copyright (c) 2015年 BSY. All rights reserved.

//

import UIKit

class ViewController: UIViewController ,UIImagePickerControllerDelegate,UINavigationControllerDelegate{

    override func viewDidLoad() {

        super.viewDidLoad()

     //创建UIButton

        var button:UIButton = UIButton()

         //设置frame

        var frame = CGRectMake(100, 60, 100, 60)

        button.frame = frame

         //设置字体颜色

        button.setTitleColor(UIColor.redColor(), forState: UIControlState.Normal)

        //设置字体

        button.setTitle("点我有惊喜", forState: UIControlState.Normal)

        //添加方法

        button.addTarget(self, action: "buttonClick", forControlEvents: UIControlEvents.TouchUpInside)

        //添加到父控件

         self.view.addSubview(button)

    }

    /**

   实现button方法

    */

    func buttonClick(){

        var pick:UIImagePickerController = UIImagePickerController()

        pick.delegate = self

        self.presentViewController(pick, animated: true, completion: nil)

    }

    /**

   实现代理方法 UIImagePickerControllerDelegate,UINavigationControllerDelegate

    */

     func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {

        var imageview:UIImageView = UIImageView(frame: CGRectMake(0, 100, 320, 300))

        let gotImage = info[UIImagePickerControllerOriginalImage] as UIImage

        imageview.image = gotImage

        self.view.addSubview(imageview)

        println(info);

          self.dismissViewControllerAnimated(true, completion: nil);

    }

    /**

   实现代理方法 UIImagePickerControllerDelegate,UINavigationControllerDelegate

    */

    func imagePickerControllerDidCancel(picker: UIImagePickerController){

    }

}

Swift开发之调用系统相册