How to increase the height of the cell in a tableview in iphone?

I am new to iphone development.I am parsing a xml file and displaying the title, date, view and summary in each row of a table.The contents of 开发者_如何学Gosummar is big ,so only first 3 words are displayed in the cell.How can i increase the height of the row with respect to the length of the contents.All the content should fit properly inside the cell and full content should be displayed.Please help me out.Thanks.

You can do this in your tableView.delegate/datasource:

- (CGFloat)tableView:(UITableView *)aTableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
   switch (indexPath.row){
       case 0:
         if(indexPath.section==0)
            return 123.0; // first row is 123pt high
       default:
         return 40.0; // all other rows are 40pt high 
   }
}

This does however slow down scroll performance. Ideally you should set the row height for all rows to be identical using tableview.rowHeight.

(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *text = @"write your dynamic text here";
    UIFont *cellFont = [UIFont fontWithName:@"Helvetica" size:14.0];
    CGSize constraintSize = CGSizeMake(320.0f, 999);  // Make changes in width as per your label requirement. 

    CGSize textSize = [text sizeWithFont:cellFont constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];

    return  textSize.height;
}

if you have multiple tableview in one view controller, you can do for each different table view as a below method.

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

    if (tableView == self.tableViewCampaigns) {

        return 45;
    }else if(tableView == self.tableViewAgenda)
        return 32;
    else
        return 29;
}

One way to do it is to manually set the size of the cell. Just replace ROW_HEIGHT with something suitable.

cell.frame = CGRectMake(0.0, 0.0, 320.0, ROW_HEIGHT);

Try using this Delegates which automatically manages according to the content of the cell.

 func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
            return 100
        }

        func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
            return UITableViewAutomaticDimension
        }