Adding Images to UITextView

问题:

In my app I have a UITextView and a button just below the text view to insert a photo into the UITextView while editing.

My requirement is that the user user is able to edit the text within, and insert images when needed.

Similar to StackOverflow's app's own UITextView:

回答1:

You can add the image view as a subView of UITextView.

Create an imageView with image:

UIImageView *imageView = [[UIImageView alloc] initWithImage:yourImage];
[imageView setFrame:yourFrame];
[yourTextView addSubview:imageView];

Edit:

For avoiding the overlapping use (Thanks @chris):

CGRect aRect = CGRectMake(156, 8, 16, 16);
[imageView setFrame:aRect];
UIBezierPath *exclusionPath = [UIBezierPath bezierPathWithRect:CGRectMake(CGRectGetMinX(imageView.frame), CGRectGetMinY(imageView.frame), CGRectGetWidth(yourTextView.frame), CGRectGetHeight(imageView.frame))];
yourTextView.textContainer.exclusionPaths = @[exclusionPath];
[yourTextView addSubview:imageView]; 

回答2:

If you add it only as a subview, some text can be "behind" the image. So add the code which will "tell" the text, that area of the image is inaccessible:

UIBezierPath *exclusionPath = [UIBezierPath    bezierPathWithRect:CGRectMake(CGRectGetMinX(imageView.frame),    
CGRectGetMinY(imageView.frame), CGRectGetWidth(imageView.frame), 
CGRectGetHeight(imageView.frame))];

textView.textContainer.exclusionPaths = @[exclusionPath];

回答3:

just add as a subview of TextView like bellow..

    [yourTextView addSubview:yourImageView];

回答4:

Check this out, ios-5-rich-text-editing-series . In iOS 5 you can insert images and use HTML texts. You might have to use UIWebview and webkit.

You can also check with EGOTextView which has a lot of rich text editing features.

回答5:

Create subclass of UITextView and override this method

- (void)paste:(id)sender 
{
    NSData *data = [[UIPasteboard generalPasteboard] dataForPasteboardType:@"public.png"];

    if (data) 
    {

        NSMutableAttributedString *attributedString = [[self attributedText] mutableCopy];

        NSTextAttachment *textAttachment = [[NSTextAttachment alloc] init];

        textAttachment.image = [UIImage imageWithData:data scale:5];

        NSAttributedString *attrStringWithImage = [NSAttributedString attributedStringWithAttachment:textAttachment];

        [attributedString replaceCharactersInRange:self.selectedRange withAttributedString:attrStringWithImage];

        self.attributedText = attributedString;

    }
    else
    {

        UIPasteboard *pasteBoard = [UIPasteboard generalPasteboard];

        NSAttributedString *text = [[NSAttributedString alloc] initWithString:pasteBoard.string];

        NSMutableAttributedString *attributedString = [self.attributedText mutableCopy];

        [attributedString replaceCharactersInRange:self.selectedRange withAttributedString:text];

        self.attributedText = attributedString;

    }
}