//如果想要调用当前设备的相机功能(拍照/相册/录像),需要遵守两个协议UIImagePickerControllerDelegate,UINavigationControllerDelegate
//从相册获取图片步骤:
//创建当前的相机对象
UIImagePickerController * picker = [[UIImagePickerController alloc]init];
//设置相机的资源类型(拍照/相册)
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;//相册
//设置代理
picker.delegate = self;
/**

• 协议方法
• @param picker 相机对象
• @param info 选中的图片的图片信息
  */

• (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
  //通过info获取选中的图片
  UIImage * image = info[UIImagePickerControllerOriginalImage];
  //向服务器上传图片,图片必须转换为nsdata
  NSData * data = UIImagePNGRepresentation(image);
  //上传数据
  //非二进制的数据 需要使用字典封装成请求体
  //二进制数据 要单独拼接
  NSDictionary * dic = @{@"m_auth":self.authToken,@"albumid":@(0),@"pic_title":@"image_png"};

  AFHTTPRequestOperationManager * manage = [AFHTTPRequestOperationManager manager];

  manage.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
  [manage POST:UPLOADPATH parameters:dic constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
  //formData 将二进制数据拼接到此处
  /**
  *
  * @param NSData 上传的二进制对象
  @name 上传的二进制数据对应的参数值
  @fileName 上传的资源名称 任意 但不能带有中文 规范写法是要带有资源后缀的
  * @mimeType 上传图片固定的类型 image/png
  * @
  */
  [formData appendPartWithFileData:data name:@"attach" fileName:@"asdf.png" mimeType:@"image/png"];
  } success:^(AFHTTPRequestOperation *operation, id responseObject) {

    NSLog(@"%@",responseObject[@"message"]);
  

  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
  NSLog(@"%@",error.description);
  }];

  [picker dismissViewControllerAnimated:YES completion:nil];

}