Question

I’m a little confused how to use IndexPath to add row into TableView.
In first i init:

    tableView = [[UITableView alloc] initWithFrame:self.view.bounds]; 

    //rows code here

    [self.view addSubview:tableView];

Now between this two i would like to add some row to my table View. I have an NSArray with NSStrings contains elements name.

So i try this:

[[self tableView] beginUpdates];
[[self tableView] insertRowsAtIndexPaths:(NSArray *)myNames withRowAnimation:UITableViewRowAnimationNone];
[[self tableView] endUpdates];

Then I’ve read that I should first add this somehow to UITableViewDataSource. So i declared it wrong? I’m asking becouse i’d rather avoid unnecessary passing data.

Answer 1

The idea of the table view – and most views in MVC – is that they reflect the state of the model. So, yes, as you suggested, have your datasource maintain an array:

@property (strong, nonatomic) NSMutableArray *array;

Make changes to the array:

[self.array addObject:@"New Object"];  

Record what rows have changed…

NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[self.array count]-1 inSection:0];
NSArray *myNames = [NSArray arrayWithObject:indexPath];

Then let the table view know that the model is different using the code you posted…

[[self tableView] beginUpdates];
[[self tableView] insertRowsAtIndexPaths:myNames withRowAnimation:UITableViewRowAnimationNone];
[[self tableView] endUpdates];