方法一；
- (CGSize) getAttributeSizeWithText:(NSString *)text fontSize:(int)fontSize
{
CGSize size=[text sizeWithAttributes:@{NSFontAttributeName: [UIFont systemFontOfSize:fontSize]}];
if (isIos7Later) {
size=[text sizeWithAttributes:@{NSFontAttributeName: [UIFont systemFontOfSize:fontSize]}];
}else{
NSAttributedString *attributeSting = [[NSAttributedString alloc] initWithString:text attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:fontSize]}];
size = [attributeSting size];
}
return size;
}
方法二，直接sizetofit方法，会自动换行，然后其frame就是对应的实际大小
方法三
import "Util.h"
import <CommonCrypto/CommonDigest.h>
@implementation Util
-
(CGSize)sizeWithString:(NSString *)string font:(UIFont *)font constraintSize:(CGSize)constraintSize
{
CGSize stringSize = CGSizeZero;NSDictionary *attributes = @{NSFontAttributeName:font};
NSInteger options = NSStringDrawingUsesFontLeading | NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesLineFragmentOrigin;
CGRect stringRect = [string boundingRectWithSize:constraintSize options:options attributes:attributes context:NULL];
stringSize = stringRect.size;return stringSize;
}
