Question

如何检查，从UIImagePickerController中选择的图像是否为全景图像？

Answer 1

在这个UIImagePickerController委托方法中（确保将委托方法添加到View Controller类中）：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
  [self dismissViewControllerAnimated:YES completion:NULL];
  UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];   

  // determine if it's panorama by checking its dimension
  CGFloat imageWidth = image.size.width;
  CGFloat imageHeight = image.size.height;

  // display the image if needed
  [self.imageView setImage:image];

  self.imagePickerController = nil;
}

理论上，全景图像的宽度比普通图像长得多。但这无法检查它是否是从其他地方下载的网络图像。

Answer 2

Swift 3.0

根据上述建议，我们可以检查全景图像的宽度，因此我们可以忽略大幅图像

正常图像信息“尺寸{960,960}方向1比例1.000000”

全景图片信息“尺寸{13632,2936}方向1比例1.000000”

let str = "\(info["UIImagePickerControllerOriginalImage"]!)"

   let s = str.slice(from: "{", to: "}")

    if let arr = s?.components(separatedBy: ","){
        if arr.count >= 2 {
            if Int(arr[0])! > 11000 {
                picker.dismiss(animated:true, completion: nil)
                self.makeToast("Invalid Image!!!")
                return
            }

            if Int(arr[1])! > 11000 {
                 picker.dismiss(animated:true, completion: nil)
                self.makeToast("Invalid Image!!!")
                return
            }
        }
 }

如何检查所选图像是全景图像还是非图像

2 个答案: