how to add cell to uitableview

Question

I'm trying to add a new cell to a UITableview with an IBAction but when I push the add button on the simulator nothing happens. After hours of research on stackoverflow and google I have come up with this code. I think it should work but I can't figure out why it doesn't.

Please help!!!!

My .h file

@interface HomeViewController : UIViewController{
NSMutableArray *countries;
}


- (IBAction)addFav:(id)sender;
@property (nonatomic, strong) IBOutlet UITableView *tableView1;



@end

and my .m file

#import "HomeViewController.h"


@interface HomeViewController ()

@end

@implementation HomeViewController{

}
@synthesize tableView1;

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
countries = [NSMutableArray new];
}




- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

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



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

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath        *)indexPath
{
static NSString *simpleTableIdentifier = @"Cell";

UITableViewCell *cell = [tableView1  dequeueReusableCellWithIdentifier:simpleTableIdentifier];

if (cell == nil) {
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}

cell.textLabel.text = [countries objectAtIndex:indexPath.row];
return cell;
}


- (IBAction)addFav:(id)sender {
[tableView1 beginUpdates];
[countries addObject:@"Finland"];
NSIndexPath *newIndexPath = [NSIndexPath indexPathForRow:([countries count] - 1) inSection:0];
[self.tableView1 insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationRight];
[tableView1 endUpdates];
[tableView1 reloadData];
}

@end

Any help would be greatly appreciated

thanks

Answer 1

If you're only adding one item at a time, you can consider modifying your addFav method to the following:

- (IBAction)addFav:(id)sender {
    //[tableView1 beginUpdates];
    [countries addObject:@"Finland"];
    //NSIndexPath *newIndexPath = [NSIndexPath indexPathForRow:([countries count] - 1) inSection:0];
    //[self.tableView1 insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationRight];
    //[tableView1 endUpdates];
    [tableView1 reloadData];
}

Also, you should be registering your HomeViewController to the UITableViewDelegate / UITableViewDataSource protocols in your .h file.

Change your line to:

@interface HomeViewController : UIViewController <UITableViewDelegate,UITableViewDataSource>{

Then within IB/Storyboard you need to link the delegate and dataSource outlets of your tableView1 under the Connections Inspector to your HomeViewController .