UITableView & Controller gives me empty table view - ios

Question

I have an application (Navigation Controller) in which the second controller is a Table View Controller. I am able to send my required data through the segue, but unable to update the entries in the tableview programmatically.
I'm new to IOS.
This is my header file
#import <UIKit/UIKit.h>
#interface HCIResultListViewController : UITableViewController
#property (strong,nonatomic) NSMutableDictionary *resultList;
#property (strong, nonatomic) IBOutlet UITableView *tableListView;
#end
This is my implementation file.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
// Return the number of sections.
return 0;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return 0;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"HelloCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil){
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = #"Hello";
// Configure the cell...
return cell;
}
Can anyone tell me how to work with tableview & Controllers?
I did go through several documentation and examples but really couldnt understand

Answer 1

You need to specify the rows and section count for the table view. like this.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return [sourceData Count]//i.e., 10;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"HelloCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil){
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = #"Hello";
// Configure the cell...
return cell;
}

Answer 2

What would you expect in your UITableView if you set the numberOfRowsInSection to 0?
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return 0; // it should be size of your Array or List
}
You should change the number of rows to the Array size or whatever data you are populating within the UITableView

Answer 3

you need to return at least 1 to be able to see some data
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

Answer 4

Number of sections of tableView is 0! make it 1

Answer 5

It may help you
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return 4;
}

Answer 6

replace your method this :
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
return 1;
}

Answer 7

That ist exactly what Apple's template meant by stating:
#warning Potentially incomplete method implementation.
You need to return appropriate values there.
Return 1 from numberOfSectionsInTableView if you just have 1 section (that ist the normal case I would say).
And return the number of rows that you want to be filled from numberOfRowsInSection. That may well be the count of an array or the number of fetched data sets or some hard coded value/constant value if it is not dynamic.
cellForRowAtIndexPath will then be called as maximum for each row/section combination that is possible but only for those cells that are visible from start or are about so be scrolled into visible areas.

Answer 8

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
//warning Incomplete method implementation.
// Return the number of rows in the section.
//
return 1;
}
As per this Datasource Method say that as number row require and you have to return 0 so not generate any row so also not generate cell so as per our requirement static otherwise dynamic generate the row at least 1 row return.