nsattributedstring

问题 This question may be a duplicate of this one. But the answers don't work for me and I want to be more specific. I have a NSString , but I need a NS(Mutable)AttributedString and some of the words in this string should be given a different color. I tried this: NSString *text = @"This is the text and i want to replace something"; NSDictionary *attributes = @ {NSForegroundColorAttributeName : [UIColor redColor]}; NSMutableAttributedString *subString = [[NSMutableAttributedString alloc]

问题 I want to use NSAttributedString in my project, but when I'm trying to set color, which isn't from the standard set ( redColor , blackColor , greenColor etc.) UILabel displays these letters in white color. Here is my line of this code. [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor colorWithRed:66 green:79 blue:91 alpha:1] range:NSMakeRange(0, attributedString.length)]; I tried to make color with CIColor from Core Image framework, but it showed the same results.

问题 I know it is possible to apply attributes to an NSAttributedString. But how can we apply different attributes to same attributed string. for the string "This is an attributed text." How can we set a particular attribute(background color or foreground color) to "This is" another attribute(background color or foreground color) to "an attributed text." Is there any way to achieve this....? Also is there any way to set the background color of an NSAttributedString in iOS? 回答1: Make a mutable copy

问题 What I need is to create NSAttributedString objects from relatively big HTML strings and store them (NSAttributedString-s) in the database. And of course I would like to do that in the background thread. Here is a simple code (which fails) to demonstrate what I'm trying to do: dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ NSString *HTMLString = @"<p>HTML string</p>"; NSDictionary *options = @{NSDocumentTypeDocumentAttribute : NSHTMLTextDocumentType,

问题 I'm trying to add some fancy text to a label, but I've run into some problems with the NSMutableAttributedString class. I was trying to achieve four this: 1. Change font, 2. Underline range, 3. Change range color, 4. Superscript range. This code: - (void)applicationDidFinishLaunching:(NSNotification*)aNotification { NSMutableAttributedString* display = [[NSMutableAttributedString alloc] initWithString:@"Hello world!"]; NSUInteger length = [[display string]length] - 1; NSRange wholeRange =

问题 Last week I asked a question about a Simulator bug with NSAttributedString not displaying: iOS 7 Simulator Bug - NSAttributedString does not appear Unfortunately it now appears this is not a simulator bug but an iOS 7 bug. I have now reproduced this issue on an iPhone 5 device. The bug appears to be the combination of using NSUnderlineStyleAttributeName & NSParagraphStyleAttributeName as attributes for a NSAttributedString. I have only tested on two iOS 7 devices so far, and the issue has

问题 How to underline a UILabel in Swift? I searched the Objective-C ones but couldn't quite get them to work in Swift. 回答1: You can do this using NSAttributedString Example: let underlineAttribute = [NSUnderlineStyleAttributeName: NSUnderlineStyle.StyleSingle.rawValue] let underlineAttributedString = NSAttributedString(string: "StringWithUnderLine", attributes: underlineAttribute) myLabel.attributedText = underlineAttributedString EDIT To have the same attributes for all texts of one UILabel, I

问题 I am displaying NSAttributed string column wise using Core Text. It is working fine. When using system font, it is displayed without any delay both in simulator and device. But when using custom font, more time is taken to display the content in device. But in the simulator, the result is quick. - (void)updateAttributedString { // Existing Code if (self.text != nil) { self.attributedString = [[NSMutableAttributedString alloc] initWithString:self.text]; NSRange range = NSMakeRange(0, [self

问题 I need to calculate text rect in my custom label not using UILabel's sizeThatFits method. Code below not working correctly. The main idea is find CTLine at index = numberOfLines - 1 and return its max y position. But as a result text height sometimes too large and sometimes not enough to draw last line. - (CGSize)fittingSizeWithSize:(CGSize)size numberOfLines:(NSInteger)numberOfLines { if (numberOfLines == 0) { return [self fittingSizeWithSize:size]; } CTFramesetterRef framesetter =

问题 I am trying to change the font size of an NSAttributedString dynamically. The problem is the string contains different font sizes and properties. so when i change the font size all the content size change to tat value. Not changing accordingly . .. . . 回答1: If I understood you correctly this approach should help you: you can enumerate all NSFontAttributeName attributes for your AttributedString and increase the font size by for instance 1. This would give you the following result: If that's