nstextattachment

问题 Loading images dynamically in async thread or image cache library like SDwebimage. Below code is what I tried and it doesn't repaint after image fetched from network. let mutableAttributedString = NSMutableAttributedString() if let _img = newsItem.img { var attachment = NSTextAttachment() attachment.bounds = CGRectMake(4, 4, expectedWidth, expectedWidth * _img.ratio) dispatch_async(dispatch_get_main_queue(), { () -> Void in attachment.image = UIImage(data: NSData(contentsOfURL: NSURL(string:

问题 Loading images dynamically in async thread or image cache library like SDwebimage. Below code is what I tried and it doesn't repaint after image fetched from network. let mutableAttributedString = NSMutableAttributedString() if let _img = newsItem.img { var attachment = NSTextAttachment() attachment.bounds = CGRectMake(4, 4, expectedWidth, expectedWidth * _img.ratio) dispatch_async(dispatch_get_main_queue(), { () -> Void in attachment.image = UIImage(data: NSData(contentsOfURL: NSURL(string:

问题 Loading images dynamically in async thread or image cache library like SDwebimage. Below code is what I tried and it doesn't repaint after image fetched from network. let mutableAttributedString = NSMutableAttributedString() if let _img = newsItem.img { var attachment = NSTextAttachment() attachment.bounds = CGRectMake(4, 4, expectedWidth, expectedWidth * _img.ratio) dispatch_async(dispatch_get_main_queue(), { () -> Void in attachment.image = UIImage(data: NSData(contentsOfURL: NSURL(string:

问题 Goal is to allow user to add NSImage (s) to an NSAttributedString in an NSTextView , and then reverse the process and extract the image(s). With code from here, can add image(s) and have them displayed inline. let attributedText = NSMutableAttributedString(string: string, attributes: attributes as? [String : AnyObject]) let attachment = NSTextAttachment() let imageTest = NSImage(named:"sampleImage") as NSImage? let attachmentCell: NSTextAttachmentCell = NSTextAttachmentCell.init(imageCell:

问题 Goal is to allow user to add NSImage (s) to an NSAttributedString in an NSTextView , and then reverse the process and extract the image(s). With code from here, can add image(s) and have them displayed inline. let attributedText = NSMutableAttributedString(string: string, attributes: attributes as? [String : AnyObject]) let attachment = NSTextAttachment() let imageTest = NSImage(named:"sampleImage") as NSImage? let attachmentCell: NSTextAttachmentCell = NSTextAttachmentCell.init(imageCell:

问题 I am building a Rich Text Editor, similar to the Notes app on the iPhone and I wanted to know how can I add a checkbox list inside the UITextView? I assume this can be done using NSTextAttachment but how do I add the tap functionality to check \ uncheck the image? 回答1: Ok so i solved this using HPTextViewTapGestureRecognizer It appears to do a good job handling tap actions for text attachments 来源： https://stackoverflow.com/questions/36297812/ios-how-to-add-checkbox-list-to-uitextview

问题 I am building a Rich Text Editor, similar to the Notes app on the iPhone and I wanted to know how can I add a checkbox list inside the UITextView? I assume this can be done using NSTextAttachment but how do I add the tap functionality to check \ uncheck the image? 回答1: Ok so i solved this using HPTextViewTapGestureRecognizer It appears to do a good job handling tap actions for text attachments 来源： https://stackoverflow.com/questions/36297812/ios-how-to-add-checkbox-list-to-uitextview

问题 I am building a Rich Text Editor, similar to the Notes app on the iPhone and I wanted to know how can I add a checkbox list inside the UITextView? I assume this can be done using NSTextAttachment but how do I add the tap functionality to check \ uncheck the image? 回答1: Ok so i solved this using HPTextViewTapGestureRecognizer It appears to do a good job handling tap actions for text attachments 来源： https://stackoverflow.com/questions/36297812/ios-how-to-add-checkbox-list-to-uitextview

问题 I can create a multi-line NSAttributedString by using escaped new-line characters ( @"\n" ). With iOS 7, I can now embed a UIImage inside attributed strings (via NSTextAttachment ). I have noticed that whenever I set the attributedText of a UILabel to a multi-line attributed string with an embedded image, the number of lines actually displayed is inversely proportional to the height of the label. For example, when the height of the label is 80, two lines appear; when the height is around 100,

问题 I'm using the following code to generate a NSAttributedString for UILabel in iOS 8. // a long long Chinese title NSString *title = @"这是一个很长很长很长很长很长很长的中文标题"; // setup icon attachment NSTextAttachment *iconAttachment = [[NSTextAttachment alloc] init]; iconAttachment.image = [UIImage imageNamed:imageName]; iconAttachment.bounds = bounds; NSAttributedString *ycardImageString = [NSAttributedString attributedStringWithAttachment:iconAttachment]; // setup attributed text NSMutableAttributedString