objective-c iPhone - UILabel 同时包含多种字体的文本

iPhone - UILabel containing text with multiple fonts at the same time

提问by Tom van Zummeren

I am looking for a way to use a UILabel (or something similar) to display something like this:

我正在寻找一种使用 UILabel（或类似的东西）来显示如下内容的方法：

Tom:Some message.

汤姆：一些信息。

It is like how it's done in for example the Facebook app to display the "what's on your mind?" messages. Does anyone have any suggestions how to approach this?

这就像在 Facebook 应用程序中显示“你在想什么？”一样。消息。有没有人有任何建议如何解决这个问题？

采纳答案by mahboudz

Use two UILabel IBOutlets, each with a different format (font/color/etc), as you desire.. Move the second one over the first based on where the first one's text ends. You can get that via sizeWithFont:forWidth:lineBreakMode:

使用两个 UILabel IBOutlets，每个都有不同的格式（字体/颜色/等），如你所愿。根据第一个文本的结束位置将第二个移到第一个上。你可以通过 sizeWithFont:forWidth:lineBreakMode 得到它：

Alternatively, you can subclass UILabel, and draw the text yourself in drawRect. If you do it this way, just add an instance variable to tell you how much of the string to draw in one format, and draw the rest in another.

或者，您可以继承 UILabel，并在 drawRect 中自己绘制文本。如果您这样做，只需添加一个实例变量来告诉您以一种格式绘制多少字符串，并以另一种格式绘制其余的字符串。

Update: Please see @Akshay's response below. As of iOS6 UILabel's can contain NSMutableAttributedString. When I wrote this, this was not available.

更新：请参阅下面@Akshay 的回复。从 iOS6 开始，UILabel 可以包含 NSMutableAttributedString。当我写这篇文章时，这是不可用的。

回答by Akshay

There is a way to set different / multiple fonts & other properties on Label using NSMutableAttributedString. Foll is my code:

有一种方法可以使用 NSMutableAttributedString 在 Label 上设置不同/多种字体和其他属性。Foll 是我的代码：

 UIFont *arialFont = [UIFont fontWithName:@"arial" size:18.0];
 NSDictionary *arialDict = [NSDictionary dictionaryWithObject: arialFont forKey:NSFontAttributeName];    
 NSMutableAttributedString *aAttrString = [[NSMutableAttributedString alloc] initWithString:title attributes: arialDict];

 UIFont *VerdanaFont = [UIFont fontWithName:@"verdana" size:12.0];
 NSDictionary *verdanaDict = [NSDictionary dictionaryWithObject:VerdanaFont forKey:NSFontAttributeName];
 NSMutableAttributedString *vAttrString = [[NSMutableAttributedString alloc]initWithString: newsDate attributes:verdanaDict];    
 [vAttrString addAttribute:NSForegroundColorAttributeName value:[UIColor blackColor] range:(NSMakeRange(0, 15))];

 [aAttrString appendAttributedString:vAttrString];


 lblText.attributedText = aAttrString;

Note that lblText is the UILabel, outlet as file owner. One can keep on appending as many NSMutableAttributedString he wants..

注意 lblText 是 UILabel，outlet 作为文件所有者。人们可以继续附加他想要的任意数量的 NSMutableAttributedString ..

Also Note that I've added verdana & arial font in my project & added a plist for the same.

另请注意，我在我的项目中添加了 verdana 和 arial 字体，并为此添加了一个 plist。

回答by Abdul Yasin

Sorry for late answer. Below code works great for me. I am posting this so that it can be helpful to someone.

抱歉回复晚了。下面的代码对我很有用。我发布此信息是为了对某人有所帮助。

    UIFont *font1 = [UIFont fontWithName:kMyriadProSemiBold size:15];
NSDictionary *arialDict = [NSDictionary dictionaryWithObject: font1 forKey:NSFontAttributeName];
NSMutableAttributedString *aAttrString1 = [[NSMutableAttributedString alloc] initWithString:@"My" attributes: arialDict];

UIFont *font2 = [UIFont fontWithName:kMyriadProRegular size:15];
NSDictionary *arialDict2 = [NSDictionary dictionaryWithObject: font2 forKey:NSFontAttributeName];
NSMutableAttributedString *aAttrString2 = [[NSMutableAttributedString alloc] initWithString:@"Profile" attributes: arialDict2];


[aAttrString1 appendAttributedString:aAttrString2];
myProfileLabel.attributedText = aAttrString1;

Please notice that My is semibold and profile is regular. I have used MyRiad font. Thanks

请注意，My 是半粗体，而 profile 是常规的。我使用过 MyRiad 字体。谢谢

回答by Jason

Update: If you are iOS 6+, then use UILabel.attributedText -- otherwise....

更新：如果你是 iOS 6+，那么使用 UILabel.attributedText——否则......

I created this basic UIView subclass to support similar functionality.

我创建了这个基本的 UIView 子类来支持类似的功能。

The list of things it doesn'tsupport is longer than what it does, but basically it allows you to manage a singleline of UILabels and format each as you want. This lets me interject text with a different color in the middle of the line, for instance, and avoid using the heavy-weight UIWebView.

的事情的清单它不支持比它做什么更长的时间，但基本上它可以让你管理一个单一UILabels的线，只要你想格式化每个。例如，这让我可以在行的中间插入不同颜色的文本，并避免使用重量级的 UIWebView。

I create these objects by placing a UIView object in my interface (using Interface Builder) and setting the type of the object in IB to MultipartLabel. Then in the code I call updateNumberOfLabels and the various setText selectors as needed.

我通过在我的界面中放置一个 UIView 对象（使用 Interface Builder）并将 IB 中的对象类型设置为 MultipartLabel 来创建这些对象。然后在代码中我根据需要调用 updateNumberOfLabels 和各种 setText 选择器。

//  MultipartLabel.m
//  MultiLabelLabel
//
//  Created by Jason Miller on 10/7/09.
//  Copyright 2009 Jason Miller. All rights reserved.
//

#import "MultipartLabel.h"

@interface MultipartLabel (Private)
- (void)updateLayout;
@end

@implementation MultipartLabel

@synthesize containerView;
@synthesize labels;

-(void)updateNumberOfLabels:(int)numLabels;
{
 [containerView removeFromSuperview];
 self.containerView = nil;

 self.containerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)] autorelease];
 [self addSubview:self.containerView];
 self.labels = [NSMutableArray array];

 while (numLabels-- > 0) {
  UILabel * label = [[UILabel alloc] initWithFrame:CGRectZero];
  [self.containerView addSubview:label];
  [self.labels addObject:label];
  [label release];
 }

 [self updateLayout];
}

-(void)setText:(NSString *)text forLabel:(int)labelNum;
{
 if( [self.labels count] > labelNum && labelNum >= 0 )
 {
  UILabel * thisLabel = [self.labels objectAtIndex:labelNum];
  thisLabel.text = text;
 }

 [self updateLayout];
}

-(void)setText:(NSString *)text andFont:(UIFont*)font forLabel:(int)labelNum;
{
 if( [self.labels count] > labelNum && labelNum >= 0 )
 {
  UILabel * thisLabel = [self.labels objectAtIndex:labelNum];
  thisLabel.text = text;
  thisLabel.font = font;
 }

 [self updateLayout];
}

-(void)setText:(NSString *)text andColor:(UIColor*)color forLabel:(int)labelNum;
{
 if( [self.labels count] > labelNum && labelNum >= 0 )
 {
  UILabel * thisLabel = [self.labels objectAtIndex:labelNum];
  thisLabel.text = text;
  thisLabel.textColor = color;
 }

 [self updateLayout];
}

-(void)setText:(NSString *)text andFont:(UIFont*)font andColor:(UIColor*)color forLabel:(int)labelNum;
{
 if( [self.labels count] > labelNum && labelNum >= 0 )
 {
  UILabel * thisLabel = [self.labels objectAtIndex:labelNum];
  thisLabel.text = text;
  thisLabel.font = font;
  thisLabel.textColor = color;
 }

 [self updateLayout];
}

- (void)updateLayout {

 int thisX = 0;

 // TODO when it is time to support different sized fonts, need to adjust each y value to line up baselines

 for (UILabel * thisLabel in self.labels) {
  CGSize size = [thisLabel.text sizeWithFont:thisLabel.font
         constrainedToSize:CGSizeMake(9999, 9999)
          lineBreakMode:thisLabel.lineBreakMode];
  CGRect thisFrame = CGRectMake( thisX, 0, size.width, size.height );
  thisLabel.frame = thisFrame;

  thisX += size.width;
 }
}


- (void)dealloc {
 [labels release];
 labels = nil;

 [containerView release];
 containerView = nil;

    [super dealloc];
}


@end

回答by Rajan Maheshwari

In swift 2.0 this can be done as follows

在 swift 2.0 中，这可以按如下方式完成

//Defining fonts of size and type
let firstfont:UIFont = UIFont(name: "Helvetica Neue", size: 17)!
let boldFont:UIFont = UIFont(name: "HelveticaNeue-Bold", size: 17)!
let thirdFont:UIFont = UIFont(name: "HelveticaNeue-ThinItalic", size: 17)!

//Making dictionaries of fonts that will be passed as an attribute        

let firstDict:NSDictionary = NSDictionary(object: firstfont, forKey:  
NSFontAttributeName)
let boldDict:NSDictionary = NSDictionary(object: boldFont, forKey: 
NSFontAttributeName)
let thirdDict:NSDictionary = NSDictionary(object: thirdFont, forKey: 
NSFontAttributeName)

let firstText = "My name is "
let attributedString = NSMutableAttributedString(string: firstText, 
attributes: firstDict as? [String : AnyObject])

let boldText  = "Rajan"
let boldString = NSMutableAttributedString(string:boldText, 
attributes:boldDict as? [String : AnyObject])

let finalText = " iOS"
let finalAttributedString =  NSMutableAttributedString(string: 
finalText, attributes: thirdDict as? [String : AnyObject])

attributedString.appendAttributedString(boldString)
attributedString.appendAttributedString(finalAttributedString)
myLabel.attributedText = attributedString

Edit
Swift 3.0

编辑
Swift 3.0

let firstfont:UIFont = UIFont(name: "Helvetica Neue", size: 17)!
let boldFont:UIFont = UIFont(name: "HelveticaNeue-Bold", size: 17)!
let thirdFont:UIFont = UIFont(name: "HelveticaNeue-ThinItalic", size: 17)!

//Making dictionaries of fonts that will be passed as an attribute

let firstDict:NSDictionary = NSDictionary(object: firstfont, forKey:
        NSFontAttributeName as NSCopying)
let boldDict:NSDictionary = NSDictionary(object: boldFont, forKey:
        NSFontAttributeName as NSCopying)
let thirdDict:NSDictionary = NSDictionary(object: thirdFont, forKey:
        NSFontAttributeName as NSCopying)

let firstText = "My name is "
let attributedString = NSMutableAttributedString(string: firstText,
                                                     attributes: firstDict as? [String : AnyObject])

let boldText  = "Rajan"
let boldString = NSMutableAttributedString(string:boldText,
                                               attributes:boldDict as? [String : AnyObject])

let finalText = " iOS"
let finalAttributedString =  NSMutableAttributedString(string:
        finalText, attributes: thirdDict as? [String : AnyObject])

attributedString.append(boldString)
attributedString.append(finalAttributedString)
myLabel.attributedText = attributedString

Edit
Swift 4.0

编辑
Swift 4.0

let firstfont:UIFont = UIFont(name: "Helvetica Neue", size: 17)!
let boldFont:UIFont = UIFont(name: "HelveticaNeue-Bold", size: 17)!
let thirdFont:UIFont = UIFont(name: "HelveticaNeue-ThinItalic", size: 17)!

//Making dictionaries of fonts that will be passed as an attribute

let firstDict:NSDictionary = NSDictionary(object: firstfont, forKey:
    NSAttributedString.Key.font as NSCopying)
let boldDict:NSDictionary = NSDictionary(object: boldFont, forKey:
    NSAttributedString.Key.font as NSCopying)
let thirdDict:NSDictionary = NSDictionary(object: thirdFont, forKey:
    NSAttributedString.Key.font as NSCopying)

let firstText = "My name is "
let attributedString = NSMutableAttributedString(string: firstText,
                                                         attributes: firstDict as? [NSAttributedString.Key : Any])

let boldText  = "Rajan"
let boldString = NSMutableAttributedString(string:boldText,
                                                   attributes:boldDict as? [NSAttributedString.Key : Any])

let finalText = " iOS"
let finalAttributedString =  NSMutableAttributedString(string:
    finalText, attributes: thirdDict as? [NSAttributedString.Key : Any])

attributedString.append(boldString)
attributedString.append(finalAttributedString)
myLabel.attributedText = attributedString

This will look like

这看起来像

回答by Laurynas

I updated MultipartLabel suggested by @Jason adding contentMode (text alignment) support.

我更新了@Jason 建议的 MultipartLabel，添加了 contentMode（文本对齐）支持。

MultipartLabel.h

多部分标签.h

#import <Foundation/Foundation.h>

@interface MultipartLabel : UIView {
}

@property (nonatomic,retain) UIView *containerView;
@property (nonatomic,retain) NSMutableArray *labels;
@property (nonatomic) UIViewContentMode contentMode;

- (void)updateNumberOfLabels:(int)numLabels;
- (void)setText:(NSString *)text forLabel:(int)labelNum;
- (void)setText:(NSString *)text andFont:(UIFont*)font forLabel:(int)labelNum;
- (void)setText:(NSString *)text andColor:(UIColor*)color forLabel:(int)labelNum;
- (void)setText:(NSString *)text andFont:(UIFont*)font andColor:(UIColor*)color forLabel:(int)labelNum;

@end

MultipartLabel.m

多部分标签.m

//  MultipartLabel.m
//  MultipartLabel
//
//  Created by Jason Miller on 10/7/09.
//  Updated by Laurynas Butkus, 2011
//  Copyright 2009 Jason Miller. All rights reserved.
//

#import "MultipartLabel.h"

@interface MultipartLabel (Private)
- (void)updateLayout;
@end

@implementation MultipartLabel

@synthesize containerView;
@synthesize labels;
@synthesize contentMode;

-(void)updateNumberOfLabels:(int)numLabels
{
    [containerView removeFromSuperview];
    self.containerView = nil;

    self.containerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)] autorelease];
    [self addSubview:self.containerView];
    self.labels = [NSMutableArray array];

    while (numLabels-- > 0) {
        UILabel * label = [[UILabel alloc] initWithFrame:CGRectZero];
        label.backgroundColor = self.backgroundColor;
        [self.containerView addSubview:label];
        [self.labels addObject:label];
        [label release];
    }

    [self updateLayout];
}

-(void)setText:(NSString *)text forLabel:(int)labelNum
{
    if( [self.labels count] > labelNum && labelNum >= 0 )
    {
        UILabel * thisLabel = [self.labels objectAtIndex:labelNum];
        thisLabel.text = text;
    }

    [self updateLayout];
}

-(void)setText:(NSString *)text andFont:(UIFont*)font forLabel:(int)labelNum
{
    if( [self.labels count] > labelNum && labelNum >= 0 )
    {
        UILabel * thisLabel = [self.labels objectAtIndex:labelNum];
        thisLabel.text = text;
        thisLabel.font = font;
    }

    [self updateLayout];
}

-(void)setText:(NSString *)text andColor:(UIColor*)color forLabel:(int)labelNum
{
    if( [self.labels count] > labelNum && labelNum >= 0 )
    {
        UILabel * thisLabel = [self.labels objectAtIndex:labelNum];
        thisLabel.text = text;
        thisLabel.textColor = color;
    }

    [self updateLayout];
}

- (void)setText:(NSString *)text andFont:(UIFont*)font andColor:(UIColor*)color forLabel:(int)labelNum
{
    if( [self.labels count] > labelNum && labelNum >= 0 )
    {
        UILabel * thisLabel = [self.labels objectAtIndex:labelNum];
        thisLabel.text = text;
        thisLabel.font = font;
        thisLabel.textColor = color;
    }

    [self updateLayout];
}

- (void)updateLayout {

    int thisX;
    int thisY;
    int totalWidth = 0;
    int offsetX = 0;

    int sizes[[self.labels count]][2];
    int i = 0;

    for (UILabel * thisLabel in self.labels) {
        CGSize size = [thisLabel.text sizeWithFont:thisLabel.font constrainedToSize:CGSizeMake(9999, 9999) 
                                     lineBreakMode:thisLabel.lineBreakMode];

        sizes[i][0] = size.width;
        sizes[i][1] = size.height;
        totalWidth+= size.width;

        i++;
    }

    i = 0;

    for (UILabel * thisLabel in self.labels) {
        // X
        switch (self.contentMode) {
            case UIViewContentModeRight:
            case UIViewContentModeBottomRight:
            case UIViewContentModeTopRight:
                thisX = self.frame.size.width - totalWidth + offsetX;
                break;

            case UIViewContentModeCenter:
                thisX = (self.frame.size.width - totalWidth) / 2 + offsetX;
                break;

            default:
                thisX = offsetX;
                break;
        }

        // Y
        switch (self.contentMode) {
            case UIViewContentModeBottom:
            case UIViewContentModeBottomLeft:
            case UIViewContentModeBottomRight:
                thisY = self.frame.size.height - sizes[i][1];
                break;

            case UIViewContentModeCenter:
                thisY = (self.frame.size.height - sizes[i][1]) / 2;
                break;

            default:
                thisY = 0;
                break;
        }

        thisLabel.frame = CGRectMake( thisX, thisY, sizes[i][0], sizes[i][1] );

        offsetX += sizes[i][0];

        i++;
    }
}

- (void)dealloc {
    [labels release];
    labels = nil;

    [containerView release];
    containerView = nil;

    [super dealloc];
}

@end

回答by George Petrov

Use CoreText API it will be much faster.

使用 CoreText API 会快很多。

Here are few examples

这里有几个例子

Basically the things you will have to do are: 1: Create UIView subclass 2: In the drawRect: method add the text drawing logic.

基本上你要做的事情是： 1：创建 UIView 子类 2：在 drawRect: 方法中添加文本绘制逻辑。

The text drawing logic: - You will need to know the range of the "name" so if Tom: Some message. is your string you will have to apply different font for range (0, 3).

文本绘制逻辑： - 您需要知道“名称”的范围，如果Tom: Some message. 是您的字符串，您必须为范围 (0, 3) 应用不同的字体。

You can customize everything with CoreText :)

您可以使用 CoreText 自定义所有内容 :)

回答by sinh99

Hi OHAttributelabel is good way for this.You can refer sample code with below link https://github.com/AliSoftware/OHAttributedLabelImport OHAttribute framwork from it and you can set your label as below

嗨 OHAttributelabel 是这个的好方法。您可以参考以下链接的示例代码 https://github.com/AliSoftware/OHAttributedLabel从中导入 OHAttribute 框架，您可以将标签设置如下

 OHAttributedLabel *lblText;
 lblText = [[OHAttributedLabel alloc] initWithFrame:CGRectMake(10,10,100,19)];
 lblText.backgroundColor = [UIColor clearColor];
    lblText.textAlignment = UITextAlignmentCenter;
    lblText.font = [UIFont fontWithName:@"BoschSans-Regular" size:10];
    NSString *strText=@"Tom: Some message.";
    NSMutableAttributedString* attrStr = [NSMutableAttributedString attributedStringWithString: strText];
    NSRange rangeOfSubstring = [strVersion rangeOfString:@“Tom:];
    if (rangeOfSubstring.location != NSNotFound) {
        [attrStr setFontName:@"BoschSans-BOLD" size:10.0 range:rangeOfSubstring];
    }
    else {
    }

    lblText.attributedText = attrStr;
    [self.View addSubview: lblText];

回答by greg

One option would be to use a UIWebView instead of UILabel.

一种选择是使用 UIWebView 而不是 UILabel。

An example: http://iphoneincubator.com/blog/windows-views/display-rich-text-using-a-uiwebview

一个例子：http: //iphoneincubator.com/blog/windows-views/display-rich-text-using-a-uiwebview

回答by Nielsou Hacken-Bergen

it's quite easy to build you own HTML code =>

构建自己的 HTML 代码非常容易 =>

UIWebView *titleAd = [UIWebView alloc] init...;

NSString *cssString = [NSString stringWithFormat:@".title {font-family: HelveticaNeue; text-decoration: bold; font-size: %fpt; color: #4083a9;} .author {font-family: HelveticaNeue; text-decoration: bold; font-size: %fpt; color: #3e4545;}",__FONTSIZE_29__, __FONTSIZE_21__];

NSString *htmlString = [NSString stringWithFormat:@"<html> <head>     <style type=\"text/css\"> %@ </style> </head> <body>     <p>     <span class=\"title\"> %@ </span>     <span class=\"author\"> proposé par %@ </span>     </p> </body> </html>", cssString, [table title], [table nameOwner]];  

[titleAd loadHTMLString:htmlString baseURL:nil];