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我正在TextView通过sqlite database. 在我已经完成的一些 Para 或 Line 数据之后，我有大约 30 到 35 张图像要添加到其中NSTextAttachment。现在我想要做的是任何有超过 2 个图像的地方，我希望它包含在Carousel View它之后的剩余数据。看看我的代码。我尝试了不同的方法，但没有成功。任何帮助都感激不尽。

NSTextAttachment *textAttachment1 = [[NSTextAttachment alloc] init];
    textAttachment1.image = [UIImage imageNamed:@"img1.png"];
    NSTextAttachment *textAttachment = [[NSTextAttachment alloc] init];
    textAttachment.image = [UIImage imageNamed:@"img2.png"];
    NSTextAttachment *textAttachment2 = [[NSTextAttachment alloc] init];
    textAttachment2.image = [UIImage imageNamed:@"img3.png"];
    NSTextAttachment *textAttachment3 = [[NSTextAttachment alloc] init];

    CGFloat oldWidth1 = textAttachment1.image.size.width;
    CGFloat oldWidth = textAttachment.image.size.width;
    CGFloat oldWidth2 = textAttachment2.image.size.width;

    CGFloat scaleFactor1 = oldWidth1 / (self.textViewResearch.frame.size.width + 70);
    CGFloat scaleFactor = oldWidth / (self.textViewResearch.frame.size.width + 70);
    CGFloat scaleFactor2 = oldWidth2 / (self.textViewResearch.frame.size.width + 70);

    textAttachment1.image = [UIImage imageWithCGImage:textAttachment1.image.CGImage scale:scaleFactor1 orientation:UIImageOrientationUp];
    textAttachment.image = [UIImage imageWithCGImage:textAttachment.image.CGImage scale:scaleFactor orientation:UIImageOrientationUp];
    textAttachment2.image = [UIImage imageWithCGImage:textAttachment2.image.CGImage scale:scaleFactor2 orientation:UIImageOrientationUp];

    NSAttributedString *attrStringWithImage1 = [NSAttributedString attributedStringWithAttachment:textAttachment1];
    NSAttributedString *attrStringWithImage = [NSAttributedString attributedStringWithAttachment:textAttachment];
    NSAttributedString *attrStringWithImage2 = [NSAttributedString attributedStringWithAttachment:textAttachment2];

    [attributedString replaceCharactersInRange:NSMakeRange(0, 0) withAttributedString:attrStringWithImage1];
    [attributedString replaceCharactersInRange:NSMakeRange(13740, 0) withAttributedString:attrStringWithImage];
    [attributedString replaceCharactersInRange:NSMakeRange(13741, 0) withAttributedString:attrStringWithImage2];

     self.textView.attributedText = attributedString;
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1 回答 1

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如果我理解正确，您希望将图像放置在文本视图中并让文本围绕它流动。拥有超过 2 张图像，您想要一个轮播，一个类的实例iCarousel。

在实例中拥有一个子视图UITextView并让文本在其周围浮动，是一项已知任务。最简单的方法似乎是使用这样的文本容器的排除路径：

// Get the dimension of the subview
iCarousel *subview = …; 
UIBezierPath *subviewPath = [UIBezierPath bezierPathWithRect:subview.frame];

// Somewhere you should add it 
UITextView *textView = …; // Wherever it comes from
[textView addSubview:subview];

// Let the text flow around it
UITextContainer *textContainer = textView.textContainer; // The text container is the region text is laid out in. 
textContainer.exclusionPaths = [subviewPath]; // Do not lay out in this region.

当然，每当子视图的框架发生变化时，您都必须更改排除区域。

一种更灵活、更复杂的方法是自己进行文本布局。如果上述方法不起作用，请告诉我。我将为此添加代码。

于 2016-06-08T10:47:17.820 回答