iphone - How to make a UITableViewCell with a UITextView inside, that dynamically adjust its height, on the basis of the UITextView?

Question

I would like to have a tablew view with a behaviour similar to the iPhone Contacts app by Apple: a uitableviewcell with a uitextview inside, so that when I write in the uitextview, the uitextview increases its height, and so accordingly the uitableviewcell dynamically adjusts its height. I searched over the whole web, finding only partial solutions and lack of sample code!

please help me I am desperate

Tony

Answer 1

Looking at this,you need to be somewhat tricky. You need to calculate the height of the textView dynamically and based on the Height of the TextView,you need to return the Height for the cell..

It's very easy & somewhat Tricky..

This is the code by which you can calculate the size of string....

First get the size of String

NSString *label =  @"Sample String to get the Size for the textView Will definitely work ";
CGSize stringSize = [label sizeWithFont:[UIFont boldSystemFontOfSize:15]
                      constrainedToSize:CGSizeMake(320, 9999)
                          lineBreakMode:UILineBreakModeWordWrap];

over here ....
NSLog(@"%f",stringSize.height);

Secondly dynamically create the textView in the cell..giving the stringSize.height

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    //if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    //}

    NSDictionary *d=(NSDictionary *)[self.menuArray objectAtIndex:indexPath.section];

    NSString *string = [d valueForKey:@"Description"];
    CGSize stringSize = [string sizeWithFont:[UIFont boldSystemFontOfSize:15] constrainedToSize:CGSizeMake(320, 9999) lineBreakMode:UILineBreakModeWordWrap];

    UITextView *textV=[[UITextView alloc] initWithFrame:CGRectMake(5, 5, 290, stringSize.height+10)];
    textV.font = [UIFont systemFontOfSize:15.0];
    textV.text=string;
    textV.textColor=[UIColor blackColor];
    textV.editable=NO;
    [cell.contentView addSubview:textV];
    [textV release];

    return cell;
}


- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath  {  

    NSDictionary *d=(NSDictionary *)[self.menuArray objectAtIndex:indexPath.section];
    NSString *label =  [d valueForKey:@"Description"];
    CGSize stringSize = [label sizeWithFont:[UIFont boldSystemFontOfSize:15]
                          constrainedToSize:CGSizeMake(320, 9999) 
                              lineBreakMode:UILineBreakModeWordWrap];

    return stringSize.height+25;

} 

After giving so much pain to my fingers,......I think this is enough code...& will surely help to solve your problem..

Good Luck