How to change cell height dynamically in UITableView static cell

Question

I am using UITableViewController instead detailView to show one entity details. I populated one row of data from PFQuery in my viewDidLoad method. I have one cell where I am using label, I want to change the size as per NSString size. I checked a lot of answers but all are related to indexPath which is for dynamic and I have static cells. My label showing complete string, but my cell is fixed. How can I change the height of the cell? Please help me to correct this problem.

Here is my code:

- (void)viewDidLoad
{
    [super viewDidLoad];
    PFQuery *query = [PFQuery queryWithClassName:@"Entities"];
    [query whereKey:@"name" equalTo:entityName];
    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        if (!error) {
            PFFile *thumbnail = [objects[0]  objectForKey:@"image"];
            detailsImageView.image = [UIImage imageNamed:@"loader.gif"];
            detailsImageView.file = thumbnail;
            [detailsImageView loadInBackground];
            detailLabel.numberOfLines = 0; // this label need dynamic height and its cell
            detailLabel.text = [objects[0]  objectForKey:@"descriptionLarge"];
            [detailLabel sizeToFit];
        } else {
            NSString *errorString = [[error userInfo] objectForKey:@"error"];
            NSLog(@"Error: %@", errorString);
        }
    }];
}

I am trying to do the following by selecting individual cells but it gave me UITableView error as I have not define tableView, how can I define or if you have any other good solution please let me know.

static NSString *simpleTableIdentifier = @"DetailsDesecriptionCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

I am also open on criticism of about coding quality so your feedback is valuable for me.

Answer 1

If it is IOS 8 OR 9, there is a simple fix.

1. Set up the constrains for the UILabel. (top, left, bottom, right)
2. Set lines of the UILabel to 0
3. Add the following code in the viewDidLoad method of the ViewController:

tableView.estimatedRowHeight = 68.0
tableView.rowHeight = UITableViewAutomaticDimension

4. override the function:

override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    return UITableViewAutomaticDimension
}