Dynamically getting height of UILabel according to Text return different Value for iOS 7.0 and iOS 6.1
You have to dynamically set the frame, like below:
Tested on iOS 6 to iOS 12.2
Swift:
let constrainedSize = CGSize(width: self.titleLable.frame.size.width, height:9999)
let attributesDictionary = [NSAttributedString.Key.font: UIFont.init(name: "HelveticaNeue", size: 11.0)]
let string = NSAttributedString.init(string: "textToShow", attributes: attributesDictionary as [NSAttributedString.Key : Any])
var requiredHeight = string.boundingRect(with: constrainedSize, options: .usesLineFragmentOrigin, context: nil)
if (requiredHeight.size.width > self.titleLable.frame.size.width) {
requiredHeight = CGRect(x: 0, y: 0, width: self.titleLable.frame.size.width, height: requiredHeight.size.height)
}
var newFrame = self.titleLable.frame
newFrame.size.height = requiredHeight.size.height
self.titleLable.frame = newFrame
Objective C:
CGSize constrainedSize = CGSizeMake(self.resizableLable.frame.size.width , 9999);
NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
[UIFont fontWithName:@"HelveticaNeue" size:11.0], NSFontAttributeName,
nil];
NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:@"textToShow" attributes:attributesDictionary];
CGRect requiredHeight = [string boundingRectWithSize:constrainedSize options:NSStringDrawingUsesLineFragmentOrigin context:nil];
if (requiredHeight.size.width > self.resizableLable.frame.size.width) {
requiredHeight = CGRectMake(0,0, self.resizableLable.frame.size.width, requiredHeight.size.height);
}
CGRect newFrame = self.resizableLable.frame;
newFrame.size.height = requiredHeight.size.height;
self.resizableLable.frame = newFrame;
How do I calculate the UILabel height dynamically
Use following method to calculate dynamic UILabel height:
- (CGFloat)getLabelHeight:(UILabel*)label
{
CGSize constraint = CGSizeMake(label.frame.size.width, CGFLOAT_MAX);
CGSize size;
NSStringDrawingContext *context = [[NSStringDrawingContext alloc] init];
CGSize boundingBox = [label.text boundingRectWithSize:constraint
options:NSStringDrawingUsesLineFragmentOrigin
attributes:@{NSFontAttributeName:label.font}
context:context].size;
size = CGSizeMake(ceil(boundingBox.width), ceil(boundingBox.height));
return size.height;
}
Adjust UILabel height depending on the text
sizeWithFont constrainedToSize:lineBreakMode:
is the method to use. An example of how to use it is below:
//Calculate the expected size based on the font and linebreak mode of your label
// FLT_MAX here simply means no constraint in height
CGSize maximumLabelSize = CGSizeMake(296, FLT_MAX);
CGSize expectedLabelSize = [yourString sizeWithFont:yourLabel.font constrainedToSize:maximumLabelSize lineBreakMode:yourLabel.lineBreakMode];
//adjust the label the the new height.
CGRect newFrame = yourLabel.frame;
newFrame.size.height = expectedLabelSize.height;
yourLabel.frame = newFrame;
How to calculate UILabel height dynamically?
Try this
// UILabel *myLabel;
CGSize labelSize = [myLabel.text sizeWithFont:myLabel.font
constrainedToSize:myLabel.frame.size
lineBreakMode:NSLineBreakByWordWrapping];
CGFloat labelHeight = labelSize.height;
int lines = [myLabel.text sizeWithFont:myLabel.font
constrainedToSize:myLabel.frame.size
lineBreakMode:NSLineBreakByWordWrapping].height/16;
// '16' is font size
or
int lines = labelHeight/16;
NSLog(@"lines count : %i \n\n",lines);
or
int lines = [myLabel.text sizeWithFont:myLabel.font
constrainedToSize:myLabel.frame.size
lineBreakMode:UILineBreakModeWordWrap].height /myLabel.font.pointSize; //fetching font size from font
By Using Categories, Just Create the category class named as
UILabel+UILabelDynamicHeight.h
UILabel+UILabelDynamicHeight.m
No more tension about the height calculation. Please review the below implementation.
Updates for iOS7 & Above,iOS 7 below : Dynamically calculate the UILabel height
#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)
#define iOS7_0 @"7.0"
UILabel+UILabelDynamicHeight.h
#import <UIKit/UIKit.h>
@interface UILabel (UILabelDynamicHeight)
#pragma mark - Calculate the size the Multi line Label
/*====================================================================*/
/* Calculate the size of the Multi line Label */
/*====================================================================*/
/**
* Returns the size of the Label
*
* @param aLabel To be used to calculte the height
*
* @return size of the Label
*/
-(CGSize)sizeOfMultiLineLabel;
@end
UILabel+UILabelDynamicHeight.m
#import "UILabel+UILabelDynamicHeight.h"
@implementation UILabel (UILabelDynamicHeight)
#pragma mark - Calculate the size,bounds,frame of the Multi line Label
/*====================================================================*/
/* Calculate the size,bounds,frame of the Multi line Label */
/*====================================================================*/
/**
* Returns the size of the Label
*
* @param aLabel To be used to calculte the height
*
* @return size of the Label
*/
-(CGSize)sizeOfMultiLineLabel{
//Label text
NSString *aLabelTextString = [self text];
//Label font
UIFont *aLabelFont = [self font];
//Width of the Label
CGFloat aLabelSizeWidth = self.frame.size.width;
if (SYSTEM_VERSION_LESS_THAN(iOS7_0)) {
//version < 7.0
return [aLabelTextString sizeWithFont:aLabelFont
constrainedToSize:CGSizeMake(aLabelSizeWidth, MAXFLOAT)
lineBreakMode:NSLineBreakByWordWrapping];
}
else if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(iOS7_0)) {
//version >= 7.0
//Return the calculated size of the Label
return [aLabelTextString boundingRectWithSize:CGSizeMake(aLabelSizeWidth, MAXFLOAT)
options:NSStringDrawingUsesLineFragmentOrigin
attributes:@{
NSFontAttributeName : aLabelFont
}
context:nil].size;
}
return [self bounds].size;
}
@end
Adjust UILabel height to text
I've just put this in a playground and it works for me.
Updated for Swift 4.0
import UIKit
func heightForView(text:String, font:UIFont, width:CGFloat) -> CGFloat{
let label:UILabel = UILabel(frame: CGRectMake(0, 0, width, CGFloat.greatestFiniteMagnitude))
label.numberOfLines = 0
label.lineBreakMode = NSLineBreakMode.byWordWrapping
label.font = font
label.text = text
label.sizeToFit()
return label.frame.height
}
let font = UIFont(name: "Helvetica", size: 20.0)
var height = heightForView("This is just a load of text", font: font, width: 100.0)
Swift 3:
func heightForView(text:String, font:UIFont, width:CGFloat) -> CGFloat{
let label:UILabel = UILabel(frame: CGRect(x: 0, y: 0, width: width, height: CGFloat.greatestFiniteMagnitude))
label.numberOfLines = 0
label.lineBreakMode = NSLineBreakMode.byWordWrapping
label.font = font
label.text = text
label.sizeToFit()
return label.frame.height
}
Not able to resize UIView with dynamic content
I got the answer. Here is the answer:
[self.rootView LayoutIfNeeded], Have to call this before getting new updated value.
Thanks
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