SizeWithFont在IOS7

Question

弃用如何改变

CGSize size=[tempStr sizeWithFont:[UIFont boldSystemFontOfSize:17] constrainedToSize:CGSizeMake(200, 56)]; 

，使其与IOS7

工作

Answer 1

你必须使用sizeWithAttributes:，使用类似：

UIFont *font = [UIFont boldSystemFontOfSize:17.0f]; 
NSDictionary *attrsDictionary = [NSDictionary dictionaryWithObject:font forKey:NSFontAttributeName]; 
CGSize size = [tempStrig sizeWithAttributes:attrDictionary]; 

Answer 2

CGFloat finalHeight; 

    CGSize constrainedSize = CGSizeMake(requiredWidth,9999); 

    NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:yourRequiredFont, NSFontAttributeName,nil]; 

    NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:yourText attributes:attributesDictionary]; 

    CGRect requiredHeight = [string boundingRectWithSize:constrainedSize options:NSStringDrawingUsesLineFragmentOrigin context:nil]; 

    if (requiredHeight.size.width > requiredWidth) { 
     requiredHeight = CGRectMake(0,0,requiredWidth, requiredHeight.size.height); 
    } 

    finalHeight=requiredHeight.size.height;