How to fix UITextView overflow when using autolayout in iOS8? - ios

Question

I am using Autolayout and have a customised UITableViewCell that contains UITextView. The height of the cell and text view should be dynamically resized to accomodate larger contents.
Following answers from these links resize ui text view to its content and
dynamic ui text view, I have used a height constraint on the text view and set its value to the height of the content. This does the job of accommodating the textView, but it is overshooting the cell. I have tried options like adjusting the size of the cell also but none of them have helped. Surprisingly, sizeToFit seems to have no effect.
Here is the code I am using:
+ (SongAdditionalTextCell *)resize:(SongAdditionalTextCell *)additionalTextCell{
UITextView *textView = additionalTextCell.additionalText;
CGSize sizeThatFitsTextView = [textView sizeThatFits:CGSizeMake(textView.frame.size.width, MAXFLOAT)];
NSLog(#"content height is %f, frame height is %f", textView.contentSize.height, textView.frame.size.height );
additionalTextCell.addnlTextHeightConstraint.constant = sizeThatFitsTextView.height;
return additionalTextCell;
}
Please see the attached image of the view (text view is second cell). any suggestions appreciated?

Answer 1

I use this one:
- (CGFloat) tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row == 2)
{
NSString *cellText = #"init some text";
CGSize labelSize = [self calculateTextSize:cellText];
return labelSize.height + 20.0f;
}
return 45;
}
- (CGSize) calculateTextSize: (NSString*) text
{
UIFont *cellFont = [UIFont fontWithName:#"HelveticaNeue" size:12.0];
CGFloat width = CGRectGetWidth(self.tableView.frame) - 40.0f;
CGSize constraintSize = CGSizeMake(width, MAXFLOAT);
CGRect labelRect = [cellText boundingRectWithSize:constraintSize options:NSStringDrawingUsesLineFragmentOrigin attributes:#{NSFontAttributeName:cellFont} context:NSLineBreakByWordWrapping];
CGSize labelSize = labelRect.size;
return labelSize;
}
CGFloat width = CGRectGetWidth(self.tableView.frame) - 40.0f; -
Calculation of the maximum available width of the text, you can use self.view.frame or etc. - 40.0f - because i have indentation from the edge = 20.0f

Answer 2

Try this it working for me
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
CGSize labelSize = [[[Array objectAtIndex:indexPath.row] valueForKey:#"detail"] sizeWithFont:[UIFont boldSystemFontOfSize:10] constrainedToSize:CGSizeMake(255, MAXFLOAT) lineBreakMode:NSLineBreakByWordWrapping];
return labelSize.height +15;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpletableidentifier=#"simpletableidentifier";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:simpletableidentifier];
if(cell == nil)
{
cell =[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:simpletableidentifier];
CGSize labelSize = [[[Array objectAtIndex:indexPath.row] valueForKey:#"detail"] sizeWithFont:[UIFont boldSystemFontOfSize:10] constrainedToSize:CGSizeMake(255, MAXFLOAT) lineBreakMode:NSLineBreakByWordWrapping];
UILabel *desc=[[UILabel alloc]initWithFrame:CGRectMake(35,2,245,labelSize.height)];
desc.backgroundColor=[UIColor clearColor];
desc.tag=2;
desc.numberOfLines=0;
desc.lineBreakMode=NSLineBreakByWordWrapping;
desc.font=[UIFont boldSystemFontOfSize:10];
desc.textColor=[UIColor whiteColor];
[cell.contentView addSubview:desc];
}
NSString *Str3 = [[Array objectAtIndex:indexPath.row] valueForKey:#"detail"];
UILabel *desc=(UILabel *)[cell.contentView viewWithTag:2];
desc.text=Str3;
cell.selectionStyle=UITableViewCellSelectionStyleNone;
cell.backgroundColor=[UIColor clearColor];
cell.contentView.backgroundColor=[UIColor clearColor];
return cell;
}

Answer 3

Finally figured it out. #RoryMcKinnel's comment does help. Here's what I did in case it can help others. The problem was that I had two type of cells, one where I need to adjust the height (additionalText) and one where I do not need to do that.
In the raw version, I override both estmatedHeightForRowAtIndexPath and heightForRowAtIndexPath and in both methods if the index is for row which is additionalText, I send UITableViewAutomaticDimension else I send the frame height. Of course refinements can be done :) to send better values, but the core concept is same.
here is the code.
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {
if (self.additionalTexts[#((long) indexPath.row)] != nil){
return UITableViewAutomaticDimension;
} else return [[SongTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MainCellIdentifier].frame.size.height;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
if (self.additionalTexts[#((long) indexPath.row)] != nil){
return UITableViewAutomaticDimension;
} else return [[SongTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MainCellIdentifier].frame.size.height;
}
and the resulting screen looks like