Variable Cell Height TableView

VariableCellHeightViewController.h

#import <UIKit.h>

@interface VariableCellHeightViewController: UITableViewController
@end

VariableCellHeightViewController.m

#import "VariableCellHeightViewController.h"

@interface VariableCellHeightViewController () <UITableViewDelegate, UITableViewDataSource>
@property (nonatomic) UITableView *tableView;
@end

@implementation VariableCellHeightViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // The following line is strangely required for Automatic Dimension to work.  The value doesn't seem important at all.
    self.tableView.estimatedRowHeight = 20;
    
    self.tableView.rowHeight = UITableViewAutomaticDimension;
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];
    
    [self.view addSubview:self.tableView];
    self.tableView.frame = self.view.bounds;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return 20;
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *testString = @"Hello Apple";
    NSString *finalString = [NSString string];
    for (NSInteger i = 0; i <= indexPath.row; i++) {
        finalString = [finalString stringByAppendingString:[NSString stringWithFormat:@" %@", testString]];
    }
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
    cell.textLabel.numberOfLines = 0;
    cell.textLabel.lineBreakMode = NSLineBreakByWordWrapping;
    cell.textLabel.text = finalString;
    cell.textLabel.preferredMaxLayoutWidth = self.view.bounds.size.width;
    return cell;
}

@end