从View控制器导航烘焙时删除tableview单元格

Question

In my iOS app I am using Core Data to show data on a table view this is working fine .

what i want to do is :

when clicking on the navigation back button of view controller i want

to delete tableview cell if the textview on the View controller is empty .

i want to do it like Apple note app .

can any one hellp me with sample code please

here is my code to check if textview is empty or not

if( self.info .text.length  <= 0 ){


}

Answer 1

1.Make sure your DataSource is something like this a

NSMutableArray *dataSource = [NSMutableArray alloc]initWitObjects:@"One",@"Two",@"Three",@"Four",@"Five",nil];

2.Remove wanted objects from your dataSource like so

[dataSource  removeObjectAtIndex:2];

Delete rows in UITableView with animation

Create indexPaths to delete like this

NSArray *deleteIndexPaths = [[NSArray alloc] initWithObjects:
        [NSIndexPath indexPathForRow:2 inSection:0],
        nil];

Finally delete them from the tableView like this

[self.tableView beginUpdates];
[self.tableView deleteRowsAtIndexPaths:deleteIndexPaths withRowAnimation:UITableViewRowAnimationFade];
[self.tableView endUpdates];

Or you can simply call

[self.tableView reloadData];