WithAlertTableViewController.m

//
//  WithAlertTableViewController.m
//  OCVeryTemp
//
//  Created by Don Mag on 2/19/18.
//

#import "WithAlertTableViewController.h"

@interface WithAlertTableViewController ()

@property NSMutableArray *theData;

@end

@implementation WithAlertTableViewController

- (void)viewDidLoad {
	[super viewDidLoad];
	
	// init data array with single-letter strings
	_theData = [NSMutableArray array];
	NSString *str = @"ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	for (int i = 0; i < [str length]; i++) {
		NSString *ch = [str substringWithRange:NSMakeRange(i, 1)];
		[_theData addObject:ch];
	}
}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
	return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
	return [_theData count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"WithAlertCell" forIndexPath:indexPath];
	
	cell.textLabel.text = [NSString stringWithFormat:@"Row: %ld - %@", (long)indexPath.row, _theData[indexPath.row]];
	
	return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
	NSString *title = @"This is the title";
	UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:nil preferredStyle:UIAlertControllerStyleAlert];
	
	_theData[indexPath.row] = @"Modified data";
	
	// save
	[alertController addAction:[UIAlertAction actionWithTitle:@"Save" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
		// this causes a scroll jump when called in this block
		[tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
	}]];
	
	// cancel
	[alertController addAction:[UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:nil]];
	
	[self presentViewController:alertController animated:YES completion:nil];
}

@end