how to show strings randomly in uitableViewCell?

Question

i want to show 4 options(strings) randomly on uitableviewcell how do i achieve this???

Answer 1

Depends what you mean by 'show 4 options randomly'.

I assume you want to show one cell in UITableView with one string out of four.

Create UITableDataSource, store 4 strings in an array and when UITableView requests cell for selected row return one of the 4 strings using random function.

Have a look at apple developer documentation about how to implement required methods for UITableView/DataSource.

Replace:

 // i have 4 strings in the array listOfOptionsText
 cell.text = [listOfOptionsText objectAtIndex:indexPath.row];
 return cell;

With:

 int rand = arc4random() % [listOfOptionsText count];
 cell.text = [listOfOptionsText objectAtIndex:rand];
 return cell;

Re: duplicates

If you're getting duplicates I assume that you want to show 4 strings (eventually) If you want to show 4 values but in random order then you can shuffle the strings first and then just pick them in order, shuffle example:

 NSMutableArray * deck =
[[NSMutableArray alloc] initWithObjects: @"One", @"Two", @"Three", @"Four", nil];

for (id string in deck) NSLog(@"%@", string);

int pos = 0;
int next = 0;
int i;
for (i = 0; i < 10; ++i)
{
    next = arc4random() % [deck count];
    [deck exchangeObjectAtIndex:pos withObjectAtIndex:next];
    pos = next;
}

NSLog(@"after shuffle ...");
for (id string in deck) NSLog(@"%@", string);

[deck release];

If you shuffle strings during initialization then you can just pick them in order (asuming you don't want duplicates meaning you are picking 4 strings out of 4 ...). I'm not sure what exactly is the purpose.

Now you can go back to original code when setting cell value:

cell.text = [listOfOptionsText objectAtIndex:indexPath.row];
return cell;

Answer 2

Use an NSMutableArray instead of anormal array and then use a random function to get a random index like:

int rand = arc4random() % [yourMutableArray count];

then get the value and do a:

[yourMutableArray removeObjectAtIndex:rand];