获取手机相册中的相片

1：创建  UIImagePickerController 控制器。

UIImagePickerController *PVC=[[UIImagePickerControlleralloc] init];

2：设置代理，实现协议。<  UINavigationControllerDelegate,UIImagePickerControllerDelegate >

 PVC.delegate=self;

3:跳转到相册界面

   [selfpresentViewController:PVCanimated:YEScompletion:nil];

4：实现协议中的方法

//选择返回

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

    //获取选择的照片--UIImagePickerControllerOriginalImage

    UIImage *image=info[UIImagePickerControllerOriginalImage];

    self.headImageView.image=image;

    [selfdismissViewControllerAnimated:NOcompletion:nil];

}

//取消相册界面

-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

    [selfdismissViewControllerAnimated:NOcompletion:nil];

}