swift中存入相册和从相册中取照片

swift中添加图片到相册中

实例代码

1.拿到照片后,写入系统的相册.

UIImageWriteToSavedPhotosAlbum(image!,self,#selector(image(image:didFinishSavingWithError:contextInfo:)), nil)

2.需要实现系统的didFinishSavingWithError方法

func image(image:UIImage, didFinishSavingWithError error : NSError?, contextInfo : AnyObject) {

if (error != nil) {   print(error!)  }     

}

注意点:以下是进入文档内容,只提供了OC的方法,没有提供swift中的方法.所以要自己把OC的转成swift的方法...

// Adds a photo to the saved photos album.  The optional completionSelector should have the form:

//  - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo;

iOS10之后 记得在info-plist里边配置Privacy - Photo Library Usage Description

swift中从相册里边获取照片

1.创建UIImagePickerController对象,设置数据源和代理,跳转到图片选择控制器

func imageFormPhotosAlbum(){

         let picker = UIImagePickerController()

        //设置代理

         picker.delegate = self

        //设置数据源(从相册或者相机)

       picker.sourceType = .photoLibrary

        self.present(picker, animated: true, completion: nil)

}

2.监听选择完照片后返回照片

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {

            根据UIImagePickerControllerOriginalImage从info里边取值

             let image = info[UIImagePickerControllerOriginalImage] as! UIImage

             picker .dismiss(animated: true, completion: nil)

}

3.监听取消选择后的按钮

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {

      print("取消了")

       picker.dismiss(animated: true, completion: nil)

}

注意:需要遵守两个协议    UIImagePickerControllerDelegate , UINavigationControllerDelegate