Question

I have an NSMutableArray and I load my tableview from it. Now I have a Button in the UI which kinda lets the user refresh the data that goes into the array multiple times.
And everytime there is new data in the Array I want to refresh the tableView.
Just doing [tableView reloadData] after updating the array seems to bring up the beachball.
ANy ideas on what would be a good way to achieve this ?

Also I have been taking a look at bindings as a way to implement my NSTableView from an array but all the examples shown online use bindings when they want to add data to their tables ?
Can anyone point me on how I could load a array with data into tableView using Bindings ?

Sorry if the questions are noobie ones, I am willing to read if someone can point me to the right data. Thanks 🙂 ( I am not looking for a shortcut, just trying to get some learned advice from experienced folks on how to approach these things )

-(IBAction)refreshList:(id)sender
{
//setup array here and sort the array based on one column. This column has 
  identifier 'col1' and it works as expected


[aTable reloadData];
  } 

- (int) numberOfRowsInTableView:(NSTableView *)aTable
{ // return count of array
 }

- (id)tableView:(NSTableView *)aTable objectValueForTableColumn: (NSTableColumn *)          
tableColumn row:(int)row
 { 
 //set up arrays here to load data in each column


 }
- (void)tableView:(NSTableView *)aTableView sortDescriptorsDidChange:(NSArray   
 *)oldDescriptors
 {
 //sort here when column headers are clicked
 } 

 -(IBAction)autorefresh:(id)sender
   {

 // Here i am trying to reload the array and refresh the tableView. I want to       
  constantly keep refreshing the array and loading the tableView here. The array does 
  get   refreshed but I am having trouble loading the tableView.


  for ( int i =0; i<=2;i++)
  { 
     // reload the array with data first.
  [aTable reloadData];
    i = 1;

  } 

Answer 1

With that code (and especially your very novel “while true” loop), you get a beach-ball because you never get back to the man run-loop. To fix use code like this after setting up the NSTableView, and it will run every 1.0 seconds

NSTimer* timer = [NSTimer timerWithTimeInterval:1.0
                                         target:[NSApp delegate]
                                       selector:@selector(myReloadData:)
                                       userInfo:nil
                                        repeats:YES];

[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSDefaultRunLoopMode];  

Then create myReloadData in your app delegate

- (void)reloadMyData:(NSTimer*)ntp
{
  // reload the array with data first.
  [aTable reloadData];
}