1、首先，swift3.0中调用相机和相册会导致崩溃，需要在info.plist文件中加入两个键值对，如下：
Privacy - Photo Library Usage Description 和Privacy - Camera Usage Description ，都是String类型，内容任意的字符串即可。
2、废话少说，上代码！
class MyController:UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate {
var uploadAlertController:UIAlertController!
var imagePickerController:UIImagePickerController!
@IBOutletweakvar headImg:UIImageView!
overridefunc viewDidLoad() {
super.viewDidLoad()
self.initAlertController()
self.initImagePickerController()
}
func initAlertController()
{
weakvar blockSelf =self
self.uploadAlertController =UIAlertController(title:nil,message: nil,preferredStyle:UIAlertControllerStyle.actionSheet)
self.uploadAlertController.view.tintColor = DeepMainColor
let takePhoto =UIAlertAction(title:"拍照",style:UIAlertActionStyle.default) { (action:UIAlertAction)in
blockSelf?.actionAction(action: action)
}
let photoLib =UIAlertAction(title:"从相册选择",style:UIAlertActionStyle.default) { (action:UIAlertAction)in
blockSelf?.actionAction(action: action)
}
let cancel =UIAlertAction(title:"取消",style:UIAlertActionStyle.cancel) { (action:UIAlertAction)in
blockSelf?.actionAction(action: action)
}
self.uploadAlertController?.addAction(takePhoto)
self.uploadAlertController?.addAction(photoLib)
self.uploadAlertController?.addAction(cancel)
}
func initImagePickerController()
{
self.imagePickerController =UIImagePickerController()
self.imagePickerController.delegate = self
// 设置是否可以管理已经存在的图片或者视频
self.imagePickerController.allowsEditing = true
}
func actionAction(action:UIAlertAction)
{
if action.title =="拍照" {
self.getImageFromPhotoLib(type: .camera)
}elseif action.title =="从相册选择"|| action.title =="更换头像" {
self.getImageFromPhotoLib(type: .photoLibrary)
}elseif action.title =="删除照片" {
self.headImg.image =UIImage(named:"head")
}
}
func getImageFromPhotoLib(type:UIImagePickerControllerSourceType)
{
self.imagePickerController.sourceType = type
//判断是否支持相册
ifUIImagePickerController.isSourceTypeAvailable(.photoLibrary) {
self.present(self.imagePickerController,animated: true,completion:nil)
}
}
//MARK:- UIImagePickerControllerDelegate
func imagePickerController(_ picker:UIImagePickerController,didFinishPickingMediaWithInfo info: [String :Any]){
let type:String = (info[UIImagePickerControllerMediaType]as!String)
//当选择的类型是图片
if type=="public.image"
{
let img = info[UIImagePickerControllerOriginalImage]as?UIImage
self.headImg.image =cropToBounds(image: img!)
let imgData =UIImageJPEGRepresentation(self.headImg.image!,0.5)
picker.dismiss(animated:true,completion:nil)
}
}
func imagePickerControllerDidCancel(_ picker:UIImagePickerController){
picker.dismiss(animated:true,completion:nil)
}
@IBActionfunc headImgTapGesture(_ sender:AnyObject) {
present(self.uploadAlertController,animated:true,completion: nil)
}
}
