Jak dodać obraz i tekst w UITextView w systemie IOS?

Dziękuję za Kod, faktycznie zadziałał. Robię kod w Swift, więc chciałbym udostępnić wersję Swift Twojego kodu. Sprawdziłem ten kod też działa.

let textView = UITextView(frame: CGRectMake(50, 50, 200, 300))
let attributedString = NSMutableAttributedString(string: "before after")
let textAttachment = NSTextAttachment()
textAttachment.image = UIImage(named: "sample_image.jpg")!

let oldWidth = textAttachment.image!.size.width;

//I'm subtracting 10px to make the image display nicely, accounting
//for the padding inside the textView
let scaleFactor = oldWidth / (textView.frame.size.width - 10);
textAttachment.image = UIImage(CGImage: textAttachment.image!.CGImage, scale: scaleFactor, orientation: .Up)
var attrStringWithImage = NSAttributedString(attachment: textAttachment)
attributedString.replaceCharactersInRange(NSMakeRange(6, 1), withAttributedString: attrStringWithImage)
textView.attributedText = attributedString;
self.view.addSubview(textView)

Kod Do Swift 3.0

var attributedString :NSMutableAttributedString!
attributedString = NSMutableAttributedString(attributedString:txtBody.attributedText)
let textAttachment = NSTextAttachment()
textAttachment.image = image

let oldWidth = textAttachment.image!.size.width;   

//I'm subtracting 10px to make the image display nicely, accounting
//for the padding inside the textView

let scaleFactor = oldWidth / (txtBody.frame.size.width - 10);
textAttachment.image = UIImage(cgImage: textAttachment.image!.cgImage!, scale: scaleFactor, orientation: .up)
let attrStringWithImage = NSAttributedString(attachment: textAttachment)
attributedString.append(attrStringWithImage)
txtBody.attributedText = attributedString;

Jeśli chcesz umieścić obraz na końcu, możesz użyć

//create your UIImage
let image = UIImage(named: change_arr[indexPath.row]);
//create and NSTextAttachment and add your image to it.
let attachment = NSTextAttachment()
attachment.image = image
//put your NSTextAttachment into and attributedString
let attString = NSAttributedString(attachment: attachment)
//add this attributed string to the current position.
textView.textStorage.insertAttributedString(attString, atIndex: textView.selectedRange.location)

Sprawdź Ta odpowiedź

Jeśli chcesz uzyskać obraz z aparatu, możesz wypróbować mój kod poniżej: (Swift 3.0)

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    let image = info[UIImagePickerControllerOriginalImage] as! UIImage
    //create and NSTextAttachment and add your image to it.
    let attachment = NSTextAttachment()
    attachment.image = image
    //calculate new size.  (-20 because I want to have a litle space on the right of picture)
    let newImageWidth = (textView.bounds.size.width - 20 )
    let scale = newImageWidth/image.size.width
    let newImageHeight = image.size.height * scale
    //resize this
    attachment.bounds = CGRect.init(x: 0, y: 0, width: newImageWidth, height: newImageHeight)
    //put your NSTextAttachment into and attributedString
    let attString = NSAttributedString(attachment: attachment)
    //add this attributed string to the current position.
    textView.textStorage.insert(attString, at: textView.selectedRange.location)
    picker.dismiss(animated: true, completion: nil)
}

Możesz odnieść się do tego, jak działa MLLabel. Głównym ideałem jest NSTextAttachment

• Utwórz ImageAttachment extends NSTextAttachment -> override - (nullable UIImage *)imageForBounds:(CGRect)imageBounds textContainer:(nullable NSTextContainer *)textContainer characindex:(NSUInteger)charIndex aby zwrócić Rozmiar obrazu, jaki chcesz.
• Utwórz NSAttributedString za pomocą [NSAttributedString attributedStringWithAttachment: ImageAttachment ]
• Utwórz nsmutableattributedstring i dodaj przypisany ciąg ImageAttachment używając - (void)replaceCharactersInRange:(NSRange)range withAttributedString:(NSAttributedString*) attrString;
• wynik: masz NSMutableAttributedString zawierać obraz i ustawić go do textView.attributedText

Próbka: tutaj

         NSURL *aURL = [NSURL URLWithString:[[NSString stringWithFormat:@"%@%@",Image_BASE_URL,str] stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding]];
        //UIImage *aImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:aURL]];
        //[aImage drawInRect:CGRectMake(0, 0, 20, 20)];


        __block  NSTextAttachment *imageAttachment = [NSTextAttachment new];
        imageAttachment.bounds = CGRectMake(0, -5, 20, 20);
        NSAttributedString *stringWithImage = [NSAttributedString attributedStringWithAttachment:imageAttachment];
        [deCodedString replaceCharactersInRange:NSMakeRange(deCodedString.length, 0) withAttributedString:stringWithImage];
        incomingMessage.messageAttributedString = deCodedString;


        SDWebImageDownloader *downloader = [SDWebImageDownloader sharedDownloader];
        imageAttachment.image = [UIImage imageNamed:@"profile_main_placeholder"];

        [downloader downloadImageWithURL:aURL
                                 options:0
                                progress:^(NSInteger receivedSize, NSInteger expectedSize) {
                                    // progression tracking code
                                }
                               completed:^(UIImage *image, NSData *data, NSError *error, BOOL finished) {
                                   if (image && finished) {
                                       [image drawInRect:CGRectMake(0, 0, 20, 20)];
                                       imageAttachment.image = image;

                                       dispatch_async(dispatch_get_main_queue(), ^(void)
                                                      {

                                                          [self.tbl_Conversation reloadRowsAtIndexPaths:[self.tbl_Conversation indexPathsForVisibleRows]
                                                                                       withRowAnimation:UITableViewRowAnimationNone];
                                                          [self.tbl_Conversation reloadData];
                                                      });



                                       //                                                              NSAttributedString *stringWithImage = [NSAttributedString attributedStringWithAttachment:imageAttachment];
                                       //                                                              [deCodedString replaceCharactersInRange:NSMakeRange(deCodedString.length, 0) withAttributedString:stringWithImage];
                                       //                                                              incomingMessage.messageAttributedString = deCodedString;
                                   }
                               }];

Spróbuj użyć placeholderTextView do prostego wprowadzania z obsługą icon placeholder.

@IBOutlet weak var tvMessage: PlaceholderTextView!

let icon: NSTextAttachment = NSTextAttachment()
icon.image = UIImage(named: "paper-plane")
let iconString = NSMutableAttributedString(attributedString: NSAttributedString(attachment: icon))

tvMessage.icon = icon

let textColor = UIColor.gray
let lightFont = UIFont(name: "Helvetica-Light", size: tvMessage.font!.pointSize)
let italicFont = UIFont(name: "Helvetica-LightOblique", size: tvMessage.font!.pointSize)
let message = NSAttributedString(string: " " + "Personal Message", attributes: [ NSFontAttributeName: lightFont!,   NSForegroundColorAttributeName: textColor])
iconString.append(message)
let option = NSAttributedString(string: " " + "Optional", attributes: [ NSFontAttributeName: italicFont!, NSForegroundColorAttributeName: textColor])
iconString.append(option)

tvMessage.attributedPlaceHolder = iconString

tvMessage.layoutSubviews()