ios 在 UITextView 中格式化文本

Format text in UITextView

提问by Shradha

I am making an "About Page" for my application, and I have to paste pretty huge amount of text on that page (text will not be editable).

我正在为我的应用程序制作一个“关于页面”，我必须在该页面上粘贴大量文本（文本不可编辑）。

I am using a UITextViewfor this purpose. However, I need some words to be in bold (like headings). But I am not able to achieve it. The UITextViewremoves all my formatting.

我正在UITextView为此目的使用 a 。但是，我需要一些粗体字（如标题）。但我无法实现它。在UITextView移除了我所有的格式。

I have no code to show here because I am pasting all my text in the IB only.

我没有代码可在此处显示，因为我仅将所有文本粘贴到 IB 中。

Is there any workaround?? For example.. I want the heading in bold..

有什么解决办法吗？？例如..我想要粗体标题..

"About ABC Corporation

"关于 ABC 公司

gkskgsagdfgfskgfjkgfgljdgsfjgdsjfgdjlsgflgdslgfljdsgfljgdsjlgfljdsgfljdgslfgls.
jdfjkhdsjlfhdlsfhkldshfkldshflkdhlkfhdklsfhlksdhflkdshflkhdsflkhsdklfhlksdhflkshf

fjhdshfkldshfkldhsfklhdsklfhlkdshfklhdsklfhdklsfhkdshfklhdsklfhklsdfhkldshfkhdsklf

fhjdgfkdgsjkfgjkdsgfjkdsgjfgjdkgfjgsjdfgjkdsgfjkgsdjkfgjsdgfjgsdjkfgjksdgfjkgskjfgs"

采纳答案by Nayan

First keep text property of textViewas 'Attributed', after that just select the text and change it's style and font as you want.

首先将 text 属性保留textView为 ' Attributed'，然后只需选择文本并根据需要更改其样式和字体。

P.S.- All you have to do this in Attribute inspector panel of IB.

PS- 您必须在 IB 的属性检查器面板中执行此操作。

EDIT:

编辑：

For more, visit this link.

有关更多信息，请访问此链接。

Also, this is very good mainly when the textFieldhave a text that will not change, e.g. - like About info. And when this text is inserted in IB directly instead of assigning text programmaticaly.

此外，这非常好，主要是当textField文本不会改变时，例如 - 像关于信息。并且当此文本直接插入 IB 而不是以编程方式分配文本时。

回答by Arun Kumar

You can use NSAttributedString, Set Text Font, Foreground And Background Colors, StrikeThroughAnd Shadow etc..

您可以使用NSAttributedString、设置文本字体、前景色和背景色StrikeThrough以及阴影等。

Attributed strings make an association between characters and their attributes. Like NSStringobjects, there are two variations, NSAttributedStringand NSMutableAttributedString. Although previous versions of iOSsupported attributed strings, it wasn't until iOS 6that controls such as buttons, labels, textfields and textviews defined a property to manage attributes. Attributes are applied to a range of characters, so you can for example, set a strikethroughattribute for just a portion of a string. It's also important to note that the default font for attributed string objects is Helvetica 12-point. Keep this in mind if you set the font attribute for a range other than the complete string. The following attributes can be set with attributed strings:

属性字符串在字符及其属性之间建立关联。像NSString对象一样，有两种变体，NSAttributedString和NSMutableAttributedString。虽然以前版本iOS支持属性字符串，但直到iOS 6按钮、标签、文本字段和文本视图等控件定义了一个属性来管理属性。属性应用于一系列字符，例如，您可以strikethrough仅为字符串的一部分设置属性。同样重要的是要注意属性字符串对象的默认字体是 Helvetica 12-point。如果您为完整字符串以外的范围设置字体属性，请记住这一点。可以使用属性字符串设置以下属性：

NSString *const NSFontAttributeName;
NSString *const NSParagraphStyleAttributeName;
NSString *const NSForegroundColorAttributeName;
NSString *const NSBackgroundColorAttributeName; 
NSString *const NSLigatureAttributeName;
NSString *const NSKernAttributeName;
NSString *const NSStrikethroughStyleAttributeName;
NSString *const NSUnderlineStyleAttributeName; 
NSString *const NSStrokeColorAttributeName;
NSString *const NSStrokeWidthAttributeName;
NSString *const NSShadowAttributeName; 
NSString *const NSVerticalGlyphFormAttributeName;



 // Create attributed string
 NSString *str = @"example for underline \nexample for font \nexample for bold \nexample for italics"; 

 NSMutableAttributedString *attributedString =
 [[NSMutableAttributedString alloc] initWithString:str];

 // Add attribute NSUnderlineStyleAttributeName 
 [attributedString addAttribute:NSUnderlineStyleAttributeName 
                   value:[NSNumber numberWithInt:NSUnderlineStyleSingle] 
                   range:NSMakeRange(12, 9)];
 [attributedString addAttribute:NSUnderlineStyleAttributeName
                   value:[NSNumber numberWithInt:NSUnderlineStyleSingle]
                   range:NSMakeRange(12, 9)];

 // Set background color for entire range
 [attributedString addAttribute:NSBackgroundColorAttributeName
                   value:[UIColor yellowColor]
                   range:NSMakeRange(0, [attributedString length])];


 // Create NSMutableParagraphStyle object
 NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
 paragraph.alignment = NSTextAlignmentCenter;

 // Add attribute NSParagraphStyleAttributeName
 [attributedString addAttribute:NSParagraphStyleAttributeName 
                   value:paragraph
                   range:NSMakeRange(0, [attributedString length])];



 // Set font, notice the range is for the whole string
 UIFont *font = [UIFont fontWithName:@"Helvetica" size:18]; 
 [attributedString addAttribute:NSFontAttributeName 
                   value:font
                   range:NSMakeRange(35, 4)];



 // Set font, notice the range is for the whole string
 UIFont *fontBold = [UIFont fontWithName:@"Helvetica-Bold" size:18];
 [attributedString addAttribute:NSFontAttributeName 
                   value:fontBold 
                   range:NSMakeRange(53, 4)];

 // Set font, notice the range is for the whole string 
 UIFont *fontItalics = [UIFont fontWithName:@"Helvetica-Oblique" size:18];
 [attributedString addAttribute:NSFontAttributeName 
                   value:fontItalics
                   range:NSMakeRange(71, 7)];



 // Set label text to attributed string
 [self.mytextView setAttributedText:attributedString];

回答by Piyush Dubey

You can use NSMutableAttributedStringto support multi attribute property to your string.
Note:- NSMutableAttributedStringis available in iOS 6.0+.
Edit:-
Check this:- How to create a UILabel or UITextView with bold and normal text in it?

您可以使用NSMutableAttributedString支持字符串的多属性属性。
注意：-NSMutableAttributedString在 iOS 6.0+ 中可用。
编辑：-
检查这个：-如何创建一个带有粗体和普通文本的 UILabel 或 UITextView？

回答by Ossir

Check out attributedTextproperty of UITextViewhttps://developer.apple.com/library/ios/documentation/uikit/reference/uitextview_class/Reference/UITextView.html#//apple_ref/occ/instp/UITextView/attributedText

查看https://developer.apple.com/library/ios/documentation/uikit/reference/uitextview_class/Reference/UITextView.html#//apple_ref/occ/instp/UITextView/attributedText 的attributedText属性UITextView

And this how you can make part of your string bold Any way to bold part of a NSString?

这如何使您的字符串的一部分加粗 任何方式来加粗 NSString 的一部分？

回答by Prince Agrawal

iOS SDK has included text kit in it. iOS 7 offers the ability to enhance the legibility of text by increasing font weight, as well as an option to set the preferred font size for apps that support dynamic text. Users will expect apps written for iOS7 to honor these settings, so ignore them at your own risk! In order to make use of dynamic type you need to specify fonts using styles rather than explicitly stating the font name and size. With iOS 7 a new method has been added to UIFont, preferredFontForTextStyle that creates a font for the given style using the user's font preferences.

iOS SDK 已包含文本工具包。iOS 7 提供了通过增加字体粗细来增强文本易读性的能力，以及为支持动态文本的应用程序设置首选字体大小的选项。用户会期望为 iOS7 编写的应用程序遵循这些设置，因此忽略它们，风险自负！为了使用动态类型，您需要使用样式指定字体，而不是明确说明字体名称和大小。在 iOS 7 中，UIFont 中添加了一个新方法 preferredFontForTextStyle，它使用用户的字体首选项为给定的样式创建字体。

Here is a great tutorial in great website Ray wenderlich text kit tutorial

这是很棒的网站上的一个很棒的教程Ray wenderlich 文本工具包教程

If you have time, watch WWDC 2013 video session 201

如果您有时间，请观看 WWDC 2013 视频会议 201

回答by Nikolaev Nikolay

UITextView is a plain text and you can't apply different styles(font,color) for different words. I suggest you to use UIWebView. It is html, so it can be styled.

UITextView 是纯文本，您不能为不同的单词应用不同的样式（字体、颜色）。我建议你使用UIWebView。它是 html，因此可以设置样式。