Dynamic height for UITableViewCell

Question

I am using UIWebView as Content for UITableViewCell. When I add UITableView, I am using some constant height for UITableViewCell. as no content is loaded in UIWebView. when Actual content is added in UIWebView, I am able to get actual height of UIWebView.by using [UIWebView sizeThatFits:CGSizeZero];

Now problem is UIWebView is with proper height but cell's height in smaller than UIWebView's new height. how I can update height for that cell?

it may help you or possible duplicate. http://stackoverflow.com/questions/8665812/iphone-how-to-increase-the-height-of-cell-dynamically-as-per-the-string — iPhone, Jan 05 '12 at 12:08
I need to implement same way, but in above example its text and in my case I am downloading content from server and then adding in UIWebView. — Sagar..., Jan 05 '12 at 12:24

Florian Mielke · Accepted Answer · 2013-05-25T06:12:59.223

4

After the UIWebView has finished loading you should call

[tableView beginUpdates];
[tableView endUpdates];

This will call -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath again will resize your UITableViewCell. In that method you calculate the new height for the cell based on the size of your UIWebView.

edited May 25 '13 at 06:12

answered Jan 05 '12 at 13:20

Florian Mielke

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Typo in your "beginUpates". Should be "beginUpdates" – mikemike396 May 24 '13 at 14:42
Where exactly do you put the `*Updates` method calls? – herrtim Nov 15 '13 at 23:32
After updating the objects that are responsible for calculating/returning the height of a cell. – Florian Mielke Nov 16 '13 at 10:44
how do you do that given the objects are in the uitableviewcell? it just ends up in an infinite recursive call... – ngb Jan 10 '14 at 10:03

score 2 · Answer 2 · edited Jan 05 '12 at 13:18

put this Method in your code it will work

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UIFont *cellFont = [UIFont fontWithName:@"Helvetica" size:17.0];
    CGSize constraintSize = CGSizeMake(280.0f, MAXFLOAT);
    CGSize labelSize = [[arrLocation objectAtIndex:indexPath.row] sizeWithFont:cellFont constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];
    return labelSize.height + 5;
}

score 0 · Answer 3 · edited Jan 05 '12 at 17:50

0

Inside this method you can change the row height dynamically

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

edited Jan 05 '12 at 17:50

Brad Larson

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answered Jan 05 '12 at 12:42

Mudit Bajpai

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In - (void)webViewDidFinishLoad:(UIWebView *)aWebView { [iListTableView beginUpdates]; [iListTableView endUpdates]; } calling this but no success. – Sagar... Jan 05 '12 at 12:44

score 0 · Answer 4 · answered Jan 05 '12 at 13:11

You can refer this sample for help:

http://github.com/penso/webview-in-tableview

Try this code:

- (void)viewDidLoad {
        [super viewDidLoad];
        self.title = @"Webview in UITableView";
        webview = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 10)]; // Don't use CGRectZero here, won't work
        webview.delegate = self;
        webview.hidden = YES;

        [webview loadRequest:[[NSURLRequest alloc] 
                              initWithURL: [NSURL URLWithString:@"http://www.google.com/"]]];

        [self.tableView setTableFooterView:webview]; // Leave this, else you'll have rows to fill the rest of the screen

    }

    - (void) webViewDidFinishLoad:(UIWebView *)webView {
        float newSize = [[webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.scrollHeight"] floatValue];
        NSLog(@"Resizing webview from %.2f to %.2f", webView.frame.size.height, newSize);
        webView.frame = CGRectMake(webView.frame.origin.x, webView.frame.origin.y, webView.frame.size.width, newSize);
        webView.hidden = NO;

        // We need to reset this, else the new frame is not used.
        [self.tableView setTableFooterView:webview];
    }

Dynamic height for UITableViewCell

4 Answers4

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