Hide Null UItableView Cells/Rows - ios

Question

I currently have a uitableview in place.
The data is obtained from an sqlite file.
Each column of the sqlite file will represent a list of: labels, images etc
The code i am using to get rows is
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
AppDelegate* appdelegate = (AppDelegate*) [[UIApplication sharedApplication]delegate];
return [appdelegate.arrayDatabase count];
}
The code to populate the cells
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"simpleTableIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == Nil)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:simpleTableIdentifier];
}
AppDelegate * appdelegate = (AppDelegate*)[[UIApplication sharedApplication]delegate];
ShowsList *sShows = [appdelegate.arrayDatabase objectAtIndex:indexPath.row];
cell.textLabel.text = [sShows strName ];
}
The problem i am having:
I want to use the labels column to populate the cell text of ViewController1.tableview but it is returning the null rows and displaying empty rows/cells in the view.
However I want to hide the rows by either counting the null cells and applying the count to the numberOfRowsInSection: method or by simply hiding empty cells.
Hide empty cells in UITableView & How to hide a section in UITableView? looks like something similar but didn't resolve my issue.
Could somebody please point me down the correct path or provide the answer :)
Thanks so much
Thomas

Answer 1

Add this code
-(UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section{
   
   
   return [[UIView alloc]init];
   
}
OR
There is alternate solution
you can set height of UITableView in numberOfRowsInSection function, having height as [array count]*(cell height)
Hope it helps you..

Answer 2

just implement a reloadTableData method like that
- (void)reloadTableData
{
// do a reload maybe from db and get yourobjects eg dbItems
// _tableItems = [NSMutableArray array];
for (ShowsList *list in dbItems) {
if ([list strName].length) {
[_tableItems addObject:list];
}
}
}
then just use _tableItems array to populate your tableview
use [self reloadTableData] instead [self.tableview reloadData]
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return _tableItems.count;
}
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"simpleTableIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == Nil)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:simpleTableIdentifier];
}
ShowsList *sShows = [_tableItems objectAtIndex:indexPath.row];
cell.textLabel.text = [sShows strName ];
}

Answer 3

You should create a mutable copy of your data object. Iterate to it first. Remove null/blank entries. Now use this modified collection for tableViewDelegate methods.

Answer 4

Assuming you are getting #"" in the model from which you are populating the UITableView.
You can remove that blank like this:
[_arrays removeObjectIdenticalTo:#""];
And use this filtered array as your model to populate the tableview.

Answer 5

In your viewDidLoad set the table footer as:
[yourTableView.tableFooterView setFrame:CGRectMake(0, 0, yourTableView.frame.size.width, 1)];
The footer is not used. But making its frame to sizeZero might crash the application, so use footer with height 1.
This worked for me.
Hope it helps.