NSString+Extension.h

#import@interface NSString (Extension)

- (CGSize)textSizewithFont:(UIFont *)font andMaxSize:(CGSize)maxSize;

@end

NSString+Extension.m

#import "NSString+Extension.h"

@implementation NSString (Extension)

- (CGSize)textSizewithFont:(UIFont *)font andMaxSize:(CGSize)maxSize {

NSDictionary * attr = @{NSFontAttributeName : font};

return [self boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attr context:nil].size;

}

@end