146

在 iOS 7 中,方法:

- (CGSize)sizeWithFont:(UIFont *)font
     constrainedToSize:(CGSize)size
         lineBreakMode:(NSLineBreakMode)lineBreakMode 

和方法:

- (CGSize)sizeWithFont:(UIFont *)font

已弃用。我该如何更换

CGSize size = [string sizeWithFont:font
                 constrainedToSize:constrainSize
                     lineBreakMode:NSLineBreakByWordWrapping];

和:

CGSize size = [string sizeWithFont:font];
4

8 回答 8

221

You could try this:

CGRect textRect = [text boundingRectWithSize:size
                                 options:NSStringDrawingUsesLineFragmentOrigin
                              attributes:@{NSFontAttributeName:FONT}
                                 context:nil];

CGSize size = textRect.size;

Just change "FONT" for an "[UIFont font....]"

于 2013-09-23T14:12:35.757 回答
36

由于我们不能对所有大于 4.3 的 iOS 使用 sizeWithAttributes,我们必须为 7.0 和以前的 iOS 编写条件代码。

1)解决方案1:

if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0")) {
   CGSize size = CGSizeMake(230,9999);
   CGRect textRect = [specialityObj.name  
       boundingRectWithSize:size
                    options:NSStringDrawingUsesLineFragmentOrigin
                 attributes:@{NSFontAttributeName:[UIFont fontWithName:[AppHandlers zHandler].fontName size:14]}
                    context:nil];
   total_height = total_height + textRect.size.height;   
}
else {
   CGSize maximumLabelSize = CGSizeMake(230,9999); 
   expectedLabelSize = [specialityObj.name sizeWithFont:[UIFont fontWithName:[AppHandlers zHandler].fontName size:14] constrainedToSize:maximumLabelSize lineBreakMode:UILineBreakModeWordWrap]; //iOS 6 and previous. 
   total_height = total_height + expectedLabelSize.height;
}

2)解决方案2

UILabel *gettingSizeLabel = [[UILabel alloc] init];
gettingSizeLabel.font = [UIFont fontWithName:[AppHandlers zHandler].fontName size:16]; // Your Font-style whatever you want to use.
gettingSizeLabel.text = @"YOUR TEXT HERE";
gettingSizeLabel.numberOfLines = 0;
CGSize maximumLabelSize = CGSizeMake(310, 9999); // this width will be as per your requirement

CGSize expectedSize = [gettingSizeLabel sizeThatFits:maximumLabelSize];

第一个解决方案是有时无法返回正确的高度值。所以使用另一种解决方案。这将完美地工作。

第二个选项非常好,并且在没有条件代码的所有 iOS 中都能顺利运行。

于 2013-10-02T11:11:34.943 回答
9

这是简单的解决方案:

要求 :

CGSize maximumSize = CGSizeMake(widthHere, MAXFLOAT);
UIFont *font = [UIFont systemFontOfSize:sizeHere];

现在由于constrainedToSizeusage:lineBreakMode:iOS 7.0中不推荐使用:

CGSize expectedSize = [stringHere sizeWithFont:font constrainedToSize:maximumSize lineBreakMode:NSLineBreakByWordWrapping];

现在在更高版本的iOS 7.0中的用法将是:

// Let's make an NSAttributedString first
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:stringHere];
//Add LineBreakMode
NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
[paragraphStyle setLineBreakMode:NSLineBreakByWordWrapping];
[attributedString setAttributes:@{NSParagraphStyleAttributeName:paragraphStyle} range:NSMakeRange(0, attributedString.length)];
// Add Font
[attributedString setAttributes:@{NSFontAttributeName:font} range:NSMakeRange(0, attributedString.length)];

//Now let's make the Bounding Rect
CGSize expectedSize = [attributedString boundingRectWithSize:maximumSize options:NSStringDrawingUsesLineFragmentOrigin context:nil].size;
于 2014-06-23T08:50:33.167 回答
7

下面是两个简单的方法,它们将取代这两个已弃用的方法。

以下是相关参考资料:

如果您使用的是 NSLineBreakByWordWrapping,则不需要指定 NSParagraphStyle,因为这是默认设置: https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Classes/NSParagraphStyle_Class/index。 html#//apple_ref/occ/clm/NSParagraphStyle/defaultParagraphStyle

您必须获取大小的 ceil,以匹配不推荐使用的方法的结果。 https://developer.apple.com/library/ios/documentation/UIKit/Reference/NSString_UIKit_Additions/#//apple_ref/occ/instm/NSString/boundingRectWithSize:options:attributes:context

+ (CGSize)text:(NSString*)text sizeWithFont:(UIFont*)font {    
    CGSize size = [text sizeWithAttributes:@{NSFontAttributeName: font}];
    return CGSizeMake(ceilf(size.width), ceilf(size.height));
}

+ (CGSize)text:(NSString*)text sizeWithFont:(UIFont*)font constrainedToSize:(CGSize)size{
    CGRect textRect = [text boundingRectWithSize:size
                                     options:NSStringDrawingUsesLineFragmentOrigin
                                  attributes:@{NSFontAttributeName: font}
                                     context:nil];
    return CGSizeMake(ceilf(textRect.size.width), ceilf(textRect.size.height));
}
于 2015-01-06T12:18:01.423 回答
6

在大多数情况下,我使用方法sizeWithFont:constrainedToSize:lineBreakMode:来估计UILabel以容纳其文本的最小大小(尤其是当标签必须放在 UITableViewCell 内时)...

...如果这正是您的情况,您可以简单地使用以下方法:

CGSize size = [myLabel textRectForBounds:myLabel.frame limitedToNumberOfLines:mylabel.numberOfLines].size;

希望这可能会有所帮助。

于 2013-10-08T14:34:04.087 回答
3
UIFont *font = [UIFont boldSystemFontOfSize:16];
CGRect new = [string boundingRectWithSize:CGSizeMake(200, 300) options:NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName: font} context:nil];
CGSize stringSize= new.size;
于 2014-07-18T04:34:11.743 回答
2

[接受的答案在一个类别中效果很好。我正在覆盖已弃用的方法名称。这是一个好主意吗?似乎在 Xcode 6.x 中没有任何抱怨]

如果您的部署目标是 7.0 或更高版本,则此方法有效。类别是NSString (Util)

NSString+Util.h

- (CGSize)sizeWithFont:(UIFont *) font;
- (CGSize)sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size;

NSString+Util.m

- (CGSize)sizeWithFont:(UIFont *) font {
    NSDictionary *fontAsAttributes = @{NSFontAttributeName:font};
    return [self sizeWithAttributes:fontAsAttributes];
}

- (CGSize)sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size {
    NSDictionary *fontAsAttributes = @{NSFontAttributeName:font};
    CGRect retVal = [self boundingRectWithSize:size
                                     options:NSStringDrawingUsesLineFragmentOrigin
                                  attributes:fontAsAttributes context:nil];
    return retVal.size;
}
于 2015-09-28T16:59:25.847 回答
1
UIFont *font = [UIFont fontWithName:@"Courier" size:16.0f];

NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
paragraphStyle.lineBreakMode = NSLineBreakByTruncatingTail;
paragraphStyle.alignment = NSTextAlignmentRight;

NSDictionary *attributes = @{ NSFontAttributeName: font,
                    NSParagraphStyleAttributeName: paragraphStyle };

CGRect textRect = [text boundingRectWithSize:size
                                 options:NSStringDrawingUsesLineFragmentOrigin
                              attributes:attributes
                                 context:nil];

CGSize size = textRect.size;

从两个答案1 + 2

于 2017-07-18T11:16:37.360 回答