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 说'sizeWithFont:minFontSIze:actualFontSize:forWidth:lineBreakMode:' is deprecated:first deprecated in iOS 7
现在我是这样实现的:
[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:'Instance method -sizeWithAttributed:minFontSize:forWidth:lineBreakMode:'not found(return type defaults to 'id')
谁能帮我解决这个警告。
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,请像这样使用:
#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
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