uiimagepickercontroller - 如何在 TableView DetailViewConroller 的正确 IndexPath.row 中插入图像？

Question

我希望将照片中的图像插入到当前选定的 indexpath 行的 TableView DetailViewController 中。所选图像作为 NSAttachment 被正确插入到属性字符串中，除了它被全局插入到所有注释索引路径中，而我希望仅将图像插入到单个索引路径，即当前选定的索引路径行（即第 3 行）。我的问题是我无法弄清楚如何将 indexpath 调用与 imagePickerController 属性字符串代码集成，以便图像仅出现在一个 Tableview DetailView 行（即第 3 行）中。任何建议都非常感谢。基本代码如下：

数据模型：这些字符串将是表格视图单元格的数据

var note: [String] = ["This is note #0.", "This is note #1.", "This is note #2.", "This is note #3.", "This is note #4.","This is note #5.","This is note #6.","This is note #7.","This is note #8.","This is note #9."]

为每个表格视图行创建一个单元格

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        
       let cell:UITableViewCell = (self.tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as UITableViewCell?)!
        
      
        let thenote = self.note[indexPath.row]
        let font = UIFont.preferredFont(forTextStyle: .headline)
        let textColor = UIColor(red: 0.175, green: 0.458, blue: 0.831, alpha: 1)
        let attributes: [NSAttributedString.Key: Any] = [
          .foregroundColor: textColor, .font: font,]
        let attributedString = NSMutableAttributedString(string: thenote, attributes: attributes)
          
        cell.textLabel?.attributedText = attributedString
        return cell
    }

函数将从 Photos 中选择的图像插入名为“imageattributedText”的属性字符串中

     func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        picker.mediaTypes = [kUTTypeImage as String, kUTTypeMovie as String]
            picker.dismiss(animated: true, completion: nil)
            if let pickedImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
                if let imgUrl = info[UIImagePickerController.InfoKey.imageURL] as? URL{
                      let imgName = imgUrl.lastPathComponent
                      let documentDirectory = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first
                      let localPath = documentDirectory?.appending(imgName)
                  
                   
                    let photoURL = URL.init(fileURLWithPath: localPath!)
                           
                let alert = UIAlertController(title: "Insert Image", message: "Do you wish to insert the selected image?", preferredStyle: UIAlertController.Style.alert)
               
                let defaultAction = UIAlertAction(title: "Insert Image", style: UIAlertAction.Style.default, handler: { [self]
                    (action:UIAlertAction!) -> Void in
                let attachment = NSTextAttachment()
                attachment.image = pickedImage
                    
                    let imageattributedText = NSMutableAttributedString(attachment: attachment)
                    if let selectedRange = textView.selectedTextRange {
                        let cursorPosition = textView.offset(from: textView.beginningOfDocument, to: selectedRange.start)
                        
                        textView.textStorage.insert(imageattributedText, at:cursorPosition)
                        let attrs = [NSAttributedString.Key.font: UIFont.preferredFont(forTextStyle: .body),  .foregroundColor: UIColor.label]
                      
                       let attrtext = NSMutableAttributedString(string: "\n", attributes: attrs)
                       attrtext.append(imageattributedText)
                        
                        self.textView.font = UIFont.systemFont(ofSize: 17)
                        
                        
                        do {
                            
                           
                            // note that fileURL is a global variable so that it can read back the saved rtfd document data created below
                            fileURL = photoURL
                            
                             // convert URL! to String
                            let path:String = fileURL.path
                            
                            // convert global variable attrString to data
                            let data = try attrtext.data(from: NSRange(location: 0, length: attrtext.length),
                                                                 documentAttributes: [.documentType:
                                                                                        NSAttributedString.DocumentType.rtfd])
                           // write data to the local app directory
                            try data.write(to: URL(fileURLWithPath: path))
                            
                            // print the path for debugging reference to make sure it is saved in Xcode Simulator
                            print("File was saved to:\(path)")

                            
                        } catch {
                            print("\(error.localizedDescription)")
                        }
                     
                        
                        
                    }
                   
                   
        })
                    
                    
                    
                    
                let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertAction.Style.cancel, handler: {
                    (action:UIAlertAction!) -> Void in
                    print("Cancel")
                })
             
               
                alert.addAction(cancelAction)
                alert.addAction(defaultAction)
                    
                     present(alert, animated: true, completion: nil)
                    
             
                    
                }
                
    
            
            }

       
        
    }**

标签： uiimagepickercontrollernsattributedstringindexpath