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。我该如何替换
CGSize size = [string sizeWithFont:font
constrainedToSize:constrainSize
lineBreakMode:NSLineBreakByWordWrapping];
和
CGSize size = [string sizeWithFont:font];
答案 0 :(得分:214)
你可以试试这个:
CGRect textRect = [text boundingRectWithSize:size
options:NSStringDrawingUsesLineFragmentOrigin
attributes:@{NSFontAttributeName:FONT}
context:nil];
CGSize size = textRect.size;
只需将“FONT”更改为“[UIFont font ....]”
答案 1 :(得分:35)
由于我们无法对大于4.3的所有iOS使用sizeWithAttributes,因此我们必须为7.0和之前的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];
第一种解决方案有时无法返回正确的高度值。所以使用其他解决方案这将完美地运作。
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。
答案 2 :(得分:9)
这是一个简单的解决方案:
要求:
CGSize maximumSize = CGSizeMake(widthHere, MAXFLOAT);
UIFont *font = [UIFont systemFontOfSize:sizeHere];
现在,在{strong> iOS 7.0 :
中不推荐使用constrainedToSizeusage:lineBreakMode:
CGSize expectedSize = [stringHere sizeWithFont:font constrainedToSize:maximumSize lineBreakMode:NSLineBreakByWordWrapping];
现在更高版 iOS 7.0 的使用情况将是:
// 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;
答案 3 :(得分:6)
在大多数情况下,我使用方法 sizeWithFont:constrainedToSize:lineBreakMode:来估算 UILabel 的最小尺寸以容纳其文本(特别是当标签必须是置于UITableViewCell内......)
...如果完全您的情况,您可以简单地使用该方法:
CGSize size = [myLabel textRectForBounds:myLabel.frame limitedToNumberOfLines:mylabel.numberOfLines].size;
希望这可能有所帮助。
答案 4 :(得分:6)
以下两个简单的方法将取代这两个弃用的方法。
以下是相关参考资料:
如果您使用的是NSLineBreakByWordWrapping,则无需指定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
您必须获得该大小的ceil,以匹配已弃用的方法的结果。 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));
}
答案 5 :(得分:3)
UIFont *font = [UIFont boldSystemFontOfSize:16];
CGRect new = [string boundingRectWithSize:CGSizeMake(200, 300) options:NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName: font} context:nil];
CGSize stringSize= new.size;
答案 6 :(得分:2)
[接受的答案适用于某个类别。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中没有任何投诉。
如果您的部署目标是7.0或更高版本,则此方法有效。类别为(x,x)
NSString (Util)
- (CGSize)sizeWithFont:(UIFont *) font;
- (CGSize)sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size;
答案 7 :(得分:0)
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;