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。

我搜索了很多关于这个概念的内容，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)CaptureClicked:(id)sender {

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

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

[picker dismissViewControllerAnimated:YES completion:NULL];

}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)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];
 }

最佳答案

首先你需要创建一个字典结构，在字典中设置值，然后将这个字典添加到一个数组中:

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])

现在可以在NSdata的基础上在collection view上展示图片

现在在网络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段，正如我向您展示的循环用于计算图像，在此基础上您可以发送多张图像。

关于ios - 将捕获的图像添加到数组中并在 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/