在iOS 6中我使用的是这种方法:
[self.handText sizeWithFont:font
minFontSize:10.0f
actualFontSize:&maxFontSize
forWidth:handWidth/2
lineBreakMode:UILineBreakModeClip];
xcode 5表示'sizeWithFont:minFontSIze:actualFontSize:forWidth:lineBreakMode:' is deprecated:first deprecated in iOS 7
现在我这样实施:
[self.handText sizeWithAttributes:@{NSFontAttributeName:font}
minFontSize:10.0f
actualFontSize:&maxFontSize
forWidth:handWidth/2
lineBreakMode:NSLineBreakByClipping];
这里xcode抛出另一个警告说:
'Instance method -sizeWithAttributed:minFontSize:forWidth:lineBreakMode:'not found(return type defaults to 'id')
任何人都可以帮我解决这个警告。
答案 0 :(得分:8)
请改用此辅助方法:
-(CGSize)frameForText:(NSString*)text sizeWithFont:(UIFont*)font constrainedToSize:(CGSize)size lineBreakMode:(NSLineBreakMode)lineBreakMode {
NSMutableParagraphStyle * paragraphStyle = [[NSMutableParagraphStyle defaultParagraphStyle] mutableCopy];
paragraphStyle.lineBreakMode = lineBreakMode;
NSDictionary * attributes = @{NSFontAttributeName:font,
NSParagraphStyleAttributeName:paragraphStyle
};
CGRect textRect = [text boundingRectWithSize:size
options:NSStringDrawingUsesLineFragmentOrigin
attributes:attributes
context:nil];
//Contains both width & height ... Needed: The height
return textRect.size;
}
如果您需要同时支持iOS 6和iOS 7,请使用如下:
#ifdef __IPHONE_7_0
titleSize = [self frameForText:self.titleLabel.text sizeWithFont:self.titleLabel.font constrainedToSize:CGSizeMake(labelMaxWidth,self.titleLabel.font.lineHeight) lineBreakMode:self.titleLabel.lineBreakMode ];
subtitleSize = [self frameForText:self.subtitleLabel.text sizeWithFont:self.subtitleLabel.font constrainedToSize:CGSizeMake(labelMaxWidth,self.subtitleLabel.font.lineHeight) lineBreakMode:self.subtitleLabel.lineBreakMode];
#else
titleSize = [self.titleLabel.text sizeWithFont:self.titleLabel.font
constrainedToSize:CGSizeMake(labelMaxWidth,self.titleLabel.font.lineHeight)
lineBreakMode:self.titleLabel.lineBreakMode];
subtitleSize = [self.subtitleLabel.text sizeWithFont:self.subtitleLabel.font
constrainedToSize:CGSizeMake(labelMaxWidth,self.subtitleLabel.font.lineHeight)
lineBreakMode:self.subtitleLabel.lineBreakMode];
#endif
答案 1 :(得分:2)
方法签名是:
- (CGSize)sizeWithAttributes:(NSDictionary *)attrs
这意味着您不能指定比第一个参数更多的参数(属性数组)。因此,您基本上使用的是iOS SDK中不存在的方法(sizeWithAttributed:minFontSize:forWidth:lineBreakMode:
)。
要获得解决方法,请查看this question。
答案 2 :(得分:1)
你可以使用这种方法
- (CGRect)boundingRectWithSize:(CGSize)size options:(NSStringDrawingOptions)options attributes:(NSDictionary *)attributes context:(NSStringDrawingContext *)context NS_AVAILABLE_IOS(7_0);