How to calculate height of UILabel if we set different types NSFontAttributeName in UILabel?

Question

I have face problem when set different type of font and color in one UILable using Attribute.My problem is how to get exact height of lable so i have provided that height to cell height and maintain my UI and text not cutting.

I have try out following things: CODE:

     int italicHeight = [AppSingletonObj get_LblHeight:strJoin withWidth:270  withFont:_SETITALICFONT(14.0)];

    int normalTextHeight = [AppSingletonObj get_LblHeight:strCmt withWidth:270  withFont:_SETREGULARFONT(14.0)];

    int cellheight = italicHeight+normalTextHeight;

When i set frame to UILabel at that time i have used below code

================================================================

  int heightlbl = [AppSingletonObj get_LblHeight:strJoinTime withWidth:lblnotifyDesWidthAnswerQues withFont:_SETREGULARFONT(14.0)];

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if i will calculated different height and set that height to label then height is greater and text is not fit to vertically center.

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    - (CGFloat)get_LblHeight:(NSString*)str withWidth:(CGFloat)width withFont:(UIFont *)uiFont  {

        @try
        {
            // Get text
            CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutable(kCFAllocatorDefault, 0);
            CFAttributedStringReplaceString (attrString, CFRangeMake(0, 0), (CFStringRef) str );
            CFIndex stringLength = CFStringGetLength((CFStringRef) attrString);

            // Change font
            CTFontRef ctFont = CTFontCreateWithName((__bridge CFStringRef) uiFont.fontName, uiFont.pointSize, NULL);
            CFAttributedStringSetAttribute(attrString, CFRangeMake(0, stringLength), kCTFontAttributeName, ctFont);

            // Calc the size
            CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString(attrString);
            CFRange fitRange;
            CGSize frameSize = CTFramesetterSuggestFrameSizeWithConstraints(framesetter, CFRangeMake(0, 0), NULL, CGSizeMake(width, CGFLOAT_MAX), &fitRange);

            CFRelease(ctFont);
            CFRelease(framesetter);
            CFRelease(attrString);

            return frameSize.height +05;
        }
        @catch (NSException *exception)
        {
            NSLog(@"Exception heightEmoji = %@",[exception description]);
        }
    }

=====================================================

Answer 1

给您的标签文本，然后计算框架并将该框架分配给标签。

CGRect labelSize = [label.text boundingRectWithSize:CGSizeMake(label.frame.size.width, self.view.frame.size.height) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont fontWithName:@"font name" size:size]} context:nil];

Answer 2

Try this solution :

UILabel height calculation

It's on swift but i think you can convert it into objective-c