Setting custom UITableViewCells height

Question

I am using a custom UITableViewCell which has some labels  buttons and image views to be displayed  There is one label in the cell whose text is a NSString object and the length of string could be variable  Due to this  I cannot set a constant height to the cell in the UITableView s heightForCellAtIndex method  The cell s height depends on the label s height which can be determined using the NSString s sizeWithFont method  I tried using it  but it looks like I m going wrong somewhere  How can it be fixed   Here is the code used for initializing the cell   if  self    super initWithFrame frame reuseIdentifier reuseIdentifier         self selectionStyle   UITableViewCellSelectionStyleNone      UIImage  image    UIImage imageNamed   dot png        imageView     UIImageView alloc  initWithImage image       imageView frame   CGRectMake 45 0 10 0 10 10        headingTxt     UILabel alloc  initWithFrame    CGRectMake 60 0 0 0 150 0 post hdg ht         headingTxt setContentMode  UIViewContentModeCenter       headingTxt text   postData user f name      headingTxt font    UIFont boldSystemFontOfSize 13       headingTxt textAlignment   UITextAlignmentLeft      headingTxt textColor    UIColor blackColor        dateTxt     UILabel alloc  initWithFrame CGRectMake 55 0 23 0 150 0 post date ht        dateTxt text   postData created dtm      dateTxt font    UIFont italicSystemFontOfSize 11       dateTxt textAlignment   UITextAlignmentLeft      dateTxt textColor    UIColor grayColor        NSString   text1   postData post body      NSLog   text length    d   text1 length        CGRect bounds    UIScreen mainScreen  bounds      CGFloat tableViewWidth      CGFloat width   0      tableViewWidth   bounds size width 2      width   tableViewWidth - 40    fudge factor       CGSize textSize    width  20000 0f     width and height of text area     CGSize textSize    245 0  20000 0f     width and height of text area     CGSize size1    text1 sizeWithFont  UIFont systemFontOfSize 11 0f                          constrainedToSize textSize lineBreakMode UILineBreakModeWordWrap        CGFloat ht   MAX size1 height  28       textView     UILabel alloc  initWithFrame CGRectMake 55 0 42 0 245 0 ht        textView text   postData post body      textView font    UIFont systemFontOfSize 11       textView textAlignment   UITextAlignmentLeft      textView textColor    UIColor blackColor       textView lineBreakMode   UILineBreakModeWordWrap      textView numberOfLines   3      textView autoresizesSubviews   YES        self contentView addSubview imageView        self contentView addSubview textView        self contentView addSubview webView        self contentView addSubview dateTxt        self contentView addSubview headingTxt        self contentView sizeToFit         imageView release        textView release        webView release        dateTxt release        headingTxt release       This is the label whose height and width are going wrong   textView     UILabel alloc  initWithFrame CGRectMake 55 0 42 0 245 0 ht

User · Answer

Your UITableViewDelegate should implement tableView heightForRowAtIndexPath   Objective-C  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath       return  indexPath row    20      Swift 5  func tableView   tableView  UITableView  heightForRowAt indexPath  IndexPath  - gt  CGFloat       return indexPath row   20     You will probably want to use NSString s sizeWithFont constrainedToSize lineBreakMode  method to calculate your row height rather than just performing some silly math on the indexPath

User · Answer

If all your rows are the same height  just set the rowHeight property of the UITableView rather than implementing the heightForRowAtIndexPath  Apple Docs      There are performance implications to using tableView heightForRowAtIndexPath  instead of rowHeight  Every time a table view is displayed  it calls tableView heightForRowAtIndexPath  on the delegate for each of its rows  which can result in a significant performance problem with table views having a large number of rows  approximately 1000 or more

User · Answer

Your UITableViewDelegate should implement tableView heightForRowAtIndexPath   Objective-C  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath       return  indexPath row    20      Swift 5  func tableView   tableView  UITableView  heightForRowAt indexPath  IndexPath  - gt  CGFloat       return indexPath row   20     You will probably want to use NSString s sizeWithFont constrainedToSize lineBreakMode  method to calculate your row height rather than just performing some silly math on the indexPath

User · Answer

define FONT SIZE 14 0f  define CELL CONTENT WIDTH 300 0f  define CELL CONTENT MARGIN 10 0f  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath        indexPath           Here you can set also height according to your section and row    if indexPath section  0  amp  amp  indexPath row  0            text   pass here your dynamic data         CGSize constraint   CGSizeMake CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   20000 0f         CGSize size    text sizeWithFont  UIFont systemFontOfSize FONT SIZE       constrainedToSize constraint lineBreakMode UILineBreakModeWordWrap         CGFloat height   MAX size height  44 0f         return height    CELL CONTENT MARGIN   2           else            return 44          -  UITableViewCell   tableView  UITableView   tv cellForRowAtIndexPath  NSIndexPath   indexPath       UITableViewCell  cell      UILabel  label   nil       cell    tv dequeueReusableCellWithIdentifier   Cell        if  cell    nil               cell     UITableViewCell alloc  initWithFrame CGRectZero reuseIdentifier   Cell                      Here you can set also height according to your section and row              if indexPath section  0  amp  amp  indexPath row  0                label     UILabel alloc  initWithFrame CGRectZero            label setLineBreakMode UILineBreakModeWordWrap            label setMinimumFontSize FONT SIZE            label setNumberOfLines 0           label backgroundColor  UIColor clearColor            label setFont  UIFont systemFontOfSize FONT SIZE             label setTag 1               NSString  text1   NSString stringWithFormat       text            CGSize constraint   CGSizeMake CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   20000 0f            CGSize size    text sizeWithFont  UIFont systemFontOfSize FONT SIZE  constrainedToSize constraint lineBreakMode UILineBreakModeWordWrap            if   label          label    UILabel   cell viewWithTag 1             label text  NSString stringWithFormat       text            label setFrame CGRectMake CELL CONTENT MARGIN  CELL CONTENT MARGIN  CELL CONTENT WIDTH          -  CELL CONTENT MARGIN   2   MAX size height  44 0f              cell contentView addSubview label         return cell

User · Answer

If all your rows are the same height  just set the rowHeight property of the UITableView rather than implementing the heightForRowAtIndexPath  Apple Docs      There are performance implications to using tableView heightForRowAtIndexPath  instead of rowHeight  Every time a table view is displayed  it calls tableView heightForRowAtIndexPath  on the delegate for each of its rows  which can result in a significant performance problem with table views having a large number of rows  approximately 1000 or more

User · Answer

To have the dynamic cell height as the text of Label increases  you first need to calculate height that the text gonna use in -heightForRowAtIndexPath delegate method and return it with the added heights of other lables images  max height of text height of other static componenets  and use same height in cell creation    define FONT SIZE 14 0f  define CELL CONTENT WIDTH 300 0f    define CELL CONTENT MARGIN 10 0f  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath         if  indexPath row    2        the cell you want to be dynamic          NSString  text   dynamic text for your label           CGSize constraint   CGSizeMake CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   20000 0f           CGSize size    text sizeWithFont  UIFont systemFontOfSize FONT SIZE  constrainedToSize constraint lineBreakMode UILineBreakModeWordWrap            CGFloat height   MAX size height  44 0f            return height    CELL CONTENT MARGIN   2             else           return 44     return normal cell height          -  UITableViewCell   tableView  UITableView   tableView cellForRowAtIndexPath  NSIndexPath   indexPath        static NSString  CellIdentifier     Cell        UILabel  label       UITableViewCell  cell    tableView dequeueReusableCellWithIdentifier CellIdentifier        if  cell    nil            cell     UITableViewCell alloc  initWithStyle UITableViewCellStyleValue1 reuseIdentifier CellIdentifier               label     UILabel alloc  initWithFrame CGRectMake 10  5  280  34          label setNumberOfLines 2        label backgroundColor    UIColor clearColor         label setFont  UIFont systemFontOfSize FONT SIZE         label adjustsFontSizeToFitWidth   NO         cell contentView  addSubview label         NSString  text   dynamic text fro your label        label setText text        if  indexPath row    2      the cell which needs to be dynamic            label setNumberOfLines 0            CGSize constraint   CGSizeMake CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   20000 0f            CGSize size    text sizeWithFont  UIFont systemFontOfSize FONT SIZE  constrainedToSize constraint lineBreakMode UILineBreakModeWordWrap             label setFrame CGRectMake CELL CONTENT MARGIN  CELL CONTENT MARGIN  CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   MAX size height  44 0f                return  cell

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I saw a lot of solutions but all was wrong or uncomplet  You can solve all problems with 5 lines in viewDidLoad and autolayout  This for objetive C    tableView delegate   self   tableView dataSource   self  self tableView estimatedRowHeight   80   the estimatedRowHeight but if is more this autoincremented with autolayout self tableView rowHeight   UITableViewAutomaticDimension   self tableView setNeedsLayout    self tableView layoutIfNeeded   self tableView contentInset   UIEdgeInsetsMake 20  0  0  0      For swift 2 0    self tableView estimatedRowHeight   80  self tableView rowHeight   UITableViewAutomaticDimension        self tableView setNeedsLayout    self tableView layoutIfNeeded    self tableView contentInset   UIEdgeInsetsMake 20  0  0  0    Now create your cell with xib or into tableview in your Storyboard With this you no need implement nothing more or override   Don forget number os lines 0  and the bottom label  constrain  downgrade  Content Hugging Priority -- Vertical to 250      You can donwload the code in the next url  https   github com jposes22 exampleTableCellCustomHeight

User · Answer

To have the dynamic cell height as the text of Label increases  you first need to calculate height that the text gonna use in -heightForRowAtIndexPath delegate method and return it with the added heights of other lables images  max height of text height of other static componenets  and use same height in cell creation    define FONT SIZE 14 0f  define CELL CONTENT WIDTH 300 0f    define CELL CONTENT MARGIN 10 0f  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath         if  indexPath row    2        the cell you want to be dynamic          NSString  text   dynamic text for your label           CGSize constraint   CGSizeMake CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   20000 0f           CGSize size    text sizeWithFont  UIFont systemFontOfSize FONT SIZE  constrainedToSize constraint lineBreakMode UILineBreakModeWordWrap            CGFloat height   MAX size height  44 0f            return height    CELL CONTENT MARGIN   2             else           return 44     return normal cell height          -  UITableViewCell   tableView  UITableView   tableView cellForRowAtIndexPath  NSIndexPath   indexPath        static NSString  CellIdentifier     Cell        UILabel  label       UITableViewCell  cell    tableView dequeueReusableCellWithIdentifier CellIdentifier        if  cell    nil            cell     UITableViewCell alloc  initWithStyle UITableViewCellStyleValue1 reuseIdentifier CellIdentifier               label     UILabel alloc  initWithFrame CGRectMake 10  5  280  34          label setNumberOfLines 2        label backgroundColor    UIColor clearColor         label setFont  UIFont systemFontOfSize FONT SIZE         label adjustsFontSizeToFitWidth   NO         cell contentView  addSubview label         NSString  text   dynamic text fro your label        label setText text        if  indexPath row    2      the cell which needs to be dynamic            label setNumberOfLines 0            CGSize constraint   CGSizeMake CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   20000 0f            CGSize size    text sizeWithFont  UIFont systemFontOfSize FONT SIZE  constrainedToSize constraint lineBreakMode UILineBreakModeWordWrap             label setFrame CGRectMake CELL CONTENT MARGIN  CELL CONTENT MARGIN  CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   MAX size height  44 0f                return  cell

User · Answer

-  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath        CGSize constraintSize    245 0  20000      CGSize neededSize     yourText sizeWithFont  UIfont systemFontOfSize 14 0f  constrainedToSize constraintSize  lineBreakMode UILineBreakModeCharacterWrap  if   neededSize height  lt   18       return 45 else return neededSize height   45    18 is the size of your text with the requested font  systemFontOfSize 14   if you change fonts you have a different number to use      45 is what is required to have a nice cell as the neededSize height is the  text  s height only   not the cell

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-  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath        CGSize constraintSize    245 0  20000      CGSize neededSize     yourText sizeWithFont  UIfont systemFontOfSize 14 0f  constrainedToSize constraintSize  lineBreakMode UILineBreakModeCharacterWrap  if   neededSize height  lt   18       return 45 else return neededSize height   45    18 is the size of your text with the requested font  systemFontOfSize 14   if you change fonts you have a different number to use      45 is what is required to have a nice cell as the neededSize height is the  text  s height only   not the cell

User · Answer

Your UITableViewDelegate should implement tableView heightForRowAtIndexPath   Objective-C  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath       return  indexPath row    20      Swift 5  func tableView   tableView  UITableView  heightForRowAt indexPath  IndexPath  - gt  CGFloat       return indexPath row   20     You will probably want to use NSString s sizeWithFont constrainedToSize lineBreakMode  method to calculate your row height rather than just performing some silly math on the indexPath

User · Answer

To set automatic dimension for row height  amp  estimated row height  ensure following steps to make  auto dimension effective for cell row height layout     Assign and implement tableview dataSource and delegate Assign UITableViewAutomaticDimension to rowHeight  amp  estimatedRowHeight Implement delegate dataSource methods  i e  heightForRowAt and return a value UITableViewAutomaticDimension to it    -  Objective C      in ViewController h  import  lt UIKit UIKit h gt    interface ViewController   UIViewController  lt UITableViewDelegate  UITableViewDataSource gt      property IBOutlet UITableView   table    end     in ViewController m  -  void viewDidLoad        super viewDidLoad       self table dataSource   self      self table delegate   self       self table rowHeight   UITableViewAutomaticDimension      self table estimatedRowHeight   UITableViewAutomaticDimension     - CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath        return UITableViewAutomaticDimension      Swift    IBOutlet weak var table  UITableView   override func viewDidLoad         super viewDidLoad           Don t forget to set dataSource and delegate for table     table dataSource   self     table delegate   self         Set automatic dimensions for row height     table rowHeight   UITableViewAutomaticDimension     table estimatedRowHeight   UITableViewAutomaticDimension         UITableViewAutomaticDimension calculates height of label contents text func tableView   tableView  UITableView  heightForRowAt indexPath  IndexPath  - gt  CGFloat       return UITableViewAutomaticDimension     For label instance in UITableviewCell   Set number of lines   0   amp  line break mode   truncate tail  Set all constraints  top  bottom  right left  with respect to its superview  cell container  Optional  Set minimum height for label  if you want minimum vertical area covered by label  even if there is no data      Note  If you ve more than one labels  UIElements  with dynamic length  which should be adjusted according to its content size  Adjust  Content Hugging and Compression Resistance Priority  for labels which you want to expand compress with higher priority   Here in this example I set low hugging and high compression resistance priority  that leads to set more priority importance for contents of second  yellow  label

User · Answer

define FONT SIZE 14 0f  define CELL CONTENT WIDTH 300 0f  define CELL CONTENT MARGIN 10 0f  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath        indexPath           Here you can set also height according to your section and row    if indexPath section  0  amp  amp  indexPath row  0            text   pass here your dynamic data         CGSize constraint   CGSizeMake CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   20000 0f         CGSize size    text sizeWithFont  UIFont systemFontOfSize FONT SIZE       constrainedToSize constraint lineBreakMode UILineBreakModeWordWrap         CGFloat height   MAX size height  44 0f         return height    CELL CONTENT MARGIN   2           else            return 44          -  UITableViewCell   tableView  UITableView   tv cellForRowAtIndexPath  NSIndexPath   indexPath       UITableViewCell  cell      UILabel  label   nil       cell    tv dequeueReusableCellWithIdentifier   Cell        if  cell    nil               cell     UITableViewCell alloc  initWithFrame CGRectZero reuseIdentifier   Cell                      Here you can set also height according to your section and row              if indexPath section  0  amp  amp  indexPath row  0                label     UILabel alloc  initWithFrame CGRectZero            label setLineBreakMode UILineBreakModeWordWrap            label setMinimumFontSize FONT SIZE            label setNumberOfLines 0           label backgroundColor  UIColor clearColor            label setFont  UIFont systemFontOfSize FONT SIZE             label setTag 1               NSString  text1   NSString stringWithFormat       text            CGSize constraint   CGSizeMake CELL CONTENT WIDTH -  CELL CONTENT MARGIN   2   20000 0f            CGSize size    text sizeWithFont  UIFont systemFontOfSize FONT SIZE  constrainedToSize constraint lineBreakMode UILineBreakModeWordWrap            if   label          label    UILabel   cell viewWithTag 1             label text  NSString stringWithFormat       text            label setFrame CGRectMake CELL CONTENT MARGIN  CELL CONTENT MARGIN  CELL CONTENT WIDTH          -  CELL CONTENT MARGIN   2   MAX size height  44 0f              cell contentView addSubview label         return cell

User · Answer

Your UITableViewDelegate should implement tableView heightForRowAtIndexPath   Objective-C  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath       return  indexPath row    20      Swift 5  func tableView   tableView  UITableView  heightForRowAt indexPath  IndexPath  - gt  CGFloat       return indexPath row   20     You will probably want to use NSString s sizeWithFont constrainedToSize lineBreakMode  method to calculate your row height rather than just performing some silly math on the indexPath

User · Answer

in a custom UITableViewCell -controller add this   - void layoutSubviews          CGRect newCellSubViewsFrame   CGRectMake 0  0  self frame size width  self frame size height       CGRect newCellViewFrame   CGRectMake self frame origin x  self frame origin y  self frame size width  self frame size height        self contentView frame   self contentView bounds   self backgroundView frame   self accessoryView frame   newCellSubViewsFrame      self frame   newCellViewFrame        super layoutSubviews       In the UITableView -controller add this  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath       return  indexPath row    1 5     your dynamic height

User · Answer

To set automatic dimension for row height  amp  estimated row height  ensure following steps to make  auto dimension effective for cell row height layout     Assign and implement tableview dataSource and delegate Assign UITableViewAutomaticDimension to rowHeight  amp  estimatedRowHeight Implement delegate dataSource methods  i e  heightForRowAt and return a value UITableViewAutomaticDimension to it    -  Objective C      in ViewController h  import  lt UIKit UIKit h gt    interface ViewController   UIViewController  lt UITableViewDelegate  UITableViewDataSource gt      property IBOutlet UITableView   table    end     in ViewController m  -  void viewDidLoad        super viewDidLoad       self table dataSource   self      self table delegate   self       self table rowHeight   UITableViewAutomaticDimension      self table estimatedRowHeight   UITableViewAutomaticDimension     - CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath        return UITableViewAutomaticDimension      Swift    IBOutlet weak var table  UITableView   override func viewDidLoad         super viewDidLoad           Don t forget to set dataSource and delegate for table     table dataSource   self     table delegate   self         Set automatic dimensions for row height     table rowHeight   UITableViewAutomaticDimension     table estimatedRowHeight   UITableViewAutomaticDimension         UITableViewAutomaticDimension calculates height of label contents text func tableView   tableView  UITableView  heightForRowAt indexPath  IndexPath  - gt  CGFloat       return UITableViewAutomaticDimension     For label instance in UITableviewCell   Set number of lines   0   amp  line break mode   truncate tail  Set all constraints  top  bottom  right left  with respect to its superview  cell container  Optional  Set minimum height for label  if you want minimum vertical area covered by label  even if there is no data      Note  If you ve more than one labels  UIElements  with dynamic length  which should be adjusted according to its content size  Adjust  Content Hugging and Compression Resistance Priority  for labels which you want to expand compress with higher priority   Here in this example I set low hugging and high compression resistance priority  that leads to set more priority importance for contents of second  yellow  label

User · Answer

Thanks to all the posts on this topic  there are some really helpful ways to adjust the rowHeight of a UITableViewCell   Here is a compilation of some of the concepts from everyone else that really helps when building for the iPhone and iPad   You can also access different sections and adjust them according to the varying sizes of views   -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath    if  UI USER INTERFACE IDIOM      UIUserInterfaceIdiomPad        int cellHeight   0       if   indexPath section     0                 cellHeight   16          settingsTable rowHeight   cellHeight            else if   indexPath section     1                cellHeight   20          settingsTable rowHeight   cellHeight             return cellHeight    else       int cellHeight   0       if   indexPath section     0                 cellHeight   24          settingsTable rowHeight   cellHeight            else if   indexPath section     1                cellHeight   40          settingsTable rowHeight   cellHeight             return cellHeight    return 0

User · Answer

I saw a lot of solutions but all was wrong or uncomplet  You can solve all problems with 5 lines in viewDidLoad and autolayout  This for objetive C    tableView delegate   self   tableView dataSource   self  self tableView estimatedRowHeight   80   the estimatedRowHeight but if is more this autoincremented with autolayout self tableView rowHeight   UITableViewAutomaticDimension   self tableView setNeedsLayout    self tableView layoutIfNeeded   self tableView contentInset   UIEdgeInsetsMake 20  0  0  0      For swift 2 0    self tableView estimatedRowHeight   80  self tableView rowHeight   UITableViewAutomaticDimension        self tableView setNeedsLayout    self tableView layoutIfNeeded    self tableView contentInset   UIEdgeInsetsMake 20  0  0  0    Now create your cell with xib or into tableview in your Storyboard With this you no need implement nothing more or override   Don forget number os lines 0  and the bottom label  constrain  downgrade  Content Hugging Priority -- Vertical to 250      You can donwload the code in the next url  https   github com jposes22 exampleTableCellCustomHeight

User · Answer

Thanks to all the posts on this topic  there are some really helpful ways to adjust the rowHeight of a UITableViewCell   Here is a compilation of some of the concepts from everyone else that really helps when building for the iPhone and iPad   You can also access different sections and adjust them according to the varying sizes of views   -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath    if  UI USER INTERFACE IDIOM      UIUserInterfaceIdiomPad        int cellHeight   0       if   indexPath section     0                 cellHeight   16          settingsTable rowHeight   cellHeight            else if   indexPath section     1                cellHeight   20          settingsTable rowHeight   cellHeight             return cellHeight    else       int cellHeight   0       if   indexPath section     0                 cellHeight   24          settingsTable rowHeight   cellHeight            else if   indexPath section     1                cellHeight   40          settingsTable rowHeight   cellHeight             return cellHeight    return 0

User · Answer

in a custom UITableViewCell -controller add this   - void layoutSubviews          CGRect newCellSubViewsFrame   CGRectMake 0  0  self frame size width  self frame size height       CGRect newCellViewFrame   CGRectMake self frame origin x  self frame origin y  self frame size width  self frame size height        self contentView frame   self contentView bounds   self backgroundView frame   self accessoryView frame   newCellSubViewsFrame      self frame   newCellViewFrame        super layoutSubviews       In the UITableView -controller add this  -  CGFloat tableView  UITableView   tableView heightForRowAtIndexPath  NSIndexPath   indexPath       return  indexPath row    1 5     your dynamic height

[ios] Setting custom UITableViewCells height

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