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标题: ios - 在数组中添加捕获的图像并在 Collection View 中显示并上传到服务器 iOS [打印本页]

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作者: 菜鸟教程小白    时间: 2022-12-13 00:25
标题: ios - 在数组中添加捕获的图像并在 Collection View 中显示并上传到服务器 iOS

我需要一张一张地捕获多张图像并将它们存储在一个数组中，在 Collection View 中显示存储的图像，然后将它们上传到服务器。

我对这个概念进行了很多搜索，但这些解决方案都不适合我，数组为空。

我试过下面的代码:

 - (IBAction)CaptureClickedid)sender {

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:NULL];
}

- (void)imagePickerControllerDidCancelUIImagePickerController *)picker {

[picker dismissViewControllerAnimated:YES completion:NULL];

}

- (void)imagePickerControllerUIImagePickerController *)picker didFinishPickingMediaWithInfoNSDictionary *)info {
 if (info[UIImagePickerControllerMediaType] == (NSString *) kUTTypeImage) {

    [self.videoController.view removeFromSuperview];
    UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
    self->ImageView.image = chosenImage;
    [picker dismissViewControllerAnimated:YES completion:NULL];

     NSData *imageData =[NSData dataWithData:UIImagePNGRepresentation(chosenImage)];

     [imageArray addObject:imageData];
     [_ImageCollectionVIew reloadData];
 }

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Best Answer-推荐答案

首先，您需要创建一个字典结构，将值设置在字典中，并以这种方式将此字典添加到数组中:

let imageData = UIImageJPEGRepresentation(image, 0.0)!
 dict.setObject(imageData, forKey: MediaFilesMetaDataConstants.FileData as NSCopying)
  dict.setObject(IMAGENAME, forKey: MediaFilesMetaDataConstants.FileName as NSCopying)
  dict.setObject(MediaFilesMetaDataConstants.FileType_Image, forKey: MediaFilesMetaDataConstants.FileType as NSCopying)
  dict.setObject(thumbData, forKey: MediaFilesMetaDataConstants.Thumbnail as NSCopying)


kAppDelegate.arrMediaFiles.addObjects(from: [dict as Any])

这用于 func imagePickerController(_picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])

现在您可以根据 NSdata 在 Collection View 上显示图像。

现在在 web 服务中，我以这种方式传递图像数据:

for i in 0 ..< arrImages.count {
            let dictImage = arrImages[i] as! NSDictionary
            let fileData = dictImage[MediaFilesMetaDataConstants.FileData] as! NSData
            let thumbData = dictImage[MediaFilesMetaDataConstants.Thumbnail] as! NSData
            let type = dictImage[MediaFilesMetaDataConstants.FileType] as! String
            if(type == MediaFilesMetaDataConstants.FileType_Image) {
                mimetype = "application/octet-stream"
            } else {
                mimetype = "video/mov"
            }

if(i == 0) {
                if(fileData.length > 0) {
                    body.appendString(string: "--\(boundary)\r\n")
                    body.appendString(string: "Content-Disposition: form-data; name=\"file_name0\"; filename=\"\(dictImage[MediaFilesMetaDataConstants.FileName] as! String)\"\r\n")
                    body.appendString(string: "Content-Type: \(mimetype)\r\n\r\n")
                    body.append(fileData as Data)
                    body.appendString(string: "\r\n")
                }

                    if(thumbData.length > 0) {
                        body.appendString(string: "--\(boundary)\r\n")
                        body.appendString(string: "Content-Disposition: form-data; name=\"thumbnail0\"; filename=\"thumbImage.png\"\r\n")
                        body.appendString(string: "Content-Type: application/octet-stream\r\n\r\n")
                        body.append(thumbData as Data)
                        body.appendString(string: "\r\n")
                    }



            }

request.httpBody = body as Data

您可以在您的网络服务中添加此代码片段，因为我向您展示了循环用于计算图像，在此基础上您可以发送多个图像。

关于ios - 在数组中添加捕获的图像并在 Collection View 中显示并上传到服务器 iOS，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43134902/

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