如何在运行时动态地在nsmutable数组中添加元素？

Question

i have an nsmutable array , so i want to show elements of array on tableview but when i

scroll tableview cells new elements should be added .

there is a confusion how can i add elements on run time when table view scrolled . ??

- (void)viewDidLoad
{   
    tableList1 = [[NSMutableArray alloc]initWithObjects:@"John",@"Dick",@"nihyan",@"alex",@"niv",nil];
    NSLog(@" arr count in Friends list   %i",tableList2.count);
    [super viewDidLoad];
}

Answer 1

You are indeed confused :)

Lets separate the answer to 2 scenarios:

1. You know all your table view data from the beginning : You don't need to add them yourself, you just need to pass the table view the full array with all the data that you need in CellForRowAtIndexPath and the table view will reuse the cells and display the next line when the user scrolls.

2. You need to add Items : The simplest way will be to add the new data to the array:

    [tableList1 addObject:YourObject]; 

   And then call:

     [self.yourTableView reloadData]; 

You should know that there are ways to add a single row with out refreshing all the table.

You can learn more here : UITableView Guide