swift调用相机和相册

简单实现swift调用相机和相册的功能，分享代码与学习swift的童鞋共同进步

import UIKit

class ViewController: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate{

var imgView = UIImageView()

var img = UIImage()

override func viewDidLoad() {

super.viewDidLoad()

// Do any additional setup after loading the view, typically from a nib.

var btn = UIButton()

btn.frame = CGRectMake(50, 120, 200, 40)

btn.backgroundColor = UIColor.orangeColor()

btn.addTarget(self, action: "goCamera", forControlEvents: UIControlEvents.TouchUpInside)

self.view.addSubview(btn)

var btn1 = UIButton()

btn1.frame = CGRectMake(50, 200, 200, 40)

btn1.backgroundColor = UIColor.redColor()

btn1.addTarget(self, action: "goImage", forControlEvents: UIControlEvents.TouchUpInside)

self.view.addSubview(btn1)

imgView.frame = CGRectMake(100, 260, 100, 100)

self.view.addSubview(imgView)

}

override func didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

}

//打开相机

func goCamera(){

//先设定sourceType为相机，然后判断相机是否可用（ipod）没相机，不可用将sourceType设定为相片库

var sourceType = UIImagePickerControllerSourceType.Camera

if !UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){

sourceType = UIImagePickerControllerSourceType.PhotoLibrary

}

var picker = UIImagePickerController()

picker.delegate = self

picker.allowsEditing = true//设置可编辑

picker.sourceType = sourceType

self.presentViewController(picker, animated: true, completion: nil)//进入照相界面

}

func goImage(){

var pickerImage = UIImagePickerController()

if !UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.PhotoLibrary){

pickerImage.sourceType = UIImagePickerControllerSourceType.PhotoLibrary

pickerImage.mediaTypes = UIImagePickerController.availableMediaTypesForSourceType(pickerImage.sourceType)!

}

pickerImage.delegate = self

pickerImage.allowsEditing = true

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

}

//选择好照片后choose后执行的方法

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

println("choose--------->>")

println(info)

img = info[UIImagePickerControllerEditedImage] as UIImage

imgView.image = img

picker.dismissViewControllerAnimated(true, completion: nil)

}

//cancel后执行的方法

func imagePickerControllerDidCancel(picker: UIImagePickerController){

println("cancel--------->>")

picker.dismissViewControllerAnimated(true, completion: nil)

}

}