NSMutableArray data not loading in tableView in iPhone? - iphone

Question

I did XML parsing for the content I obtained from WCF Service. I loaded the data in NSMutableArray using NSXMLParser.Now I want that data to be loaded in tableview in a UIView. But I can see the empty tableview being loaded and data doesn't. Couldn't understand where I am going wrong.
My NSMutableArray is like this:
(
{
UserName="Roy";
Password="126";
},
{
UserName="Joy";
Password="123";
},
{
UserName="Rony";
Password="5983";
}
-------------
-------------
)
And the code for UItableView is :
#interface RootViewController : UIViewController<NSXMLParserDelegate,UITableViewDataSource,UITableViewDelegate>
{
NSMutableArray *arr;
UITableView *tableView;
}
- (void)viewDidLoad
{
UITableView* tableView = [[UITableView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:tableView];
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [arr count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier=#"Cell";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell==nil)
{
cell=[[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];
}
NSString *tempstring=[arr objectAtIndex:indexPath.row];
cell.textLabel.text= tempstring;
return cell;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 3;
}
I am getting empty tableview with some empty rows. How can i fix this?

Answer 1

hey you just add this code in your cellForRowAtIndexPath delegete:-
EDITED
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier=#"Cell";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell==nil)
{
cell=[[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];
}
SMutableDictionary *d = (NSMutableDictionary *) [arr objectAtIndex:indexPath.row]
UILabel *username = [[UILabel alloc]initWithFrame:CGRectMake(10, 5, 280, 30)];
username.textColor =DARK_VIEW;
username.font=[UIFont boldSystemFontOfSize:15];
[username setTextAlignment:UITextAlignmentLeft];
[username setText:[d valueForKey:#"UserName"]];
[cell addSubview:username];
[username release];
UILabel *Password = [[UILabel alloc]initWithFrame:CGRectMake(11, 25, 280, 30)];
Password.textColor =DARK_VIEW;
Password.font=[UIFont fontWithName:#"arial" size:12];
[Password setTextAlignment:UITextAlignmentLeft];
[Password setText:[d valueForKey:#"Password"]];
[cell addSubview:Password];
[Password release];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
SMutableDictionary *d = (NSMutableDictionary *) [arr objectAtIndex:indexPath.row]
NSString *forNExtViewString =[d valueForKey:#"EmployeID"];
objSectonView =[[cntrSecodviewcontroller alloc]initWithNibName:#"cntrSecodviewcontroller" bundle:nil];
[self.navigationController pushViewController:objSectonView animated:YES];
}

Answer 2

You forgot to set the tableView delegate and datasource. Your datasource also looks like it contains a collection of NSDictionaries. In your cellForRow you have to correctly extract the values from the dictionary
- (void)viewDidLoad
{
[super viewDidLoad];
UITableView* tableView = [[UITableView alloc] initWithFrame:self.view.bounds];
tableView.delegate = self;
tableView.dataSource = self;
[self.view addSubview:tableView];
}
Like Nitin Gohel pointed out
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier=#"Cell";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell==nil)
{
cell=[[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];
}
cell.textLabel.text = [[arr objectAtIndex:indexPath.row] valueForKey:#"UserName"];
return cell;
}

Answer 3

Just make sure about the following things :
Values are retained in the array
Reload your TableView after the objects are added to array.
i.e [tableView reloadData];
And Just replace your method with this one.
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier=#"Cell";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell==nil)
{
cell=[[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];
}
//Over here just print the value of your array , to cross check whether the values are retained in the Array
NSLog(#"%#",[arr objectAtIndex:indexPath.row]);
NSString *tempstring= [[arr objectAtIndex:indexPath.row] valueForKey:#"UserName"];
cell.textLabel.text= tempstring;
return cell;
}
This would definitely bring the solution of your problem.

Answer 4

Check this and confirm your delegates, that might be the reason of not getting tableview called.
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
tablView = [[UITableView alloc]initWithFrame:CGRectMake(10, 10, 300, 460)];
tablView.delegate = self;
tablView.dataSource = self;
[self.view addSubview:tablView];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath*)indexPath
{
static NSString *SimpleTableIdentifier = #"SimpleTableIdentifier";
UITableViewCell * cell = [tablView
dequeueReusableCellWithIdentifier: SimpleTableIdentifier];
if(cell == nil) {
cell = [[[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:SimpleTableIdentifier] autorelease];
}
UILabel *lbl5 = [[UILabel alloc]initWithFrame:CGRectMake(30, 5, 250, 50);];
UILabel *lbl6 = [[UILabel alloc]initWithFrame:CGRectMake(30, 60, 250, 50)];
lbl1.text = [arrayName objectAtIndex:i];
lbl2.text = [arrayAddress objectAtIndex:i];
NSString *tempstring=[arr1 objectAtIndex:indexPath.row];
NSString *tempstring=[arr2 objectAtIndex:indexPath.row];
[cell addSubview:lbl1];
[cell addSubview:lbl2];
// cell.textLabel.text= tempstring;
return cell;
}

Answer 5

You are accessing array at indexPath, and this array contain dictionary, so first get array and take it in dictionary and access it with key value
cell.textLabel.text = [[arr objectAtIndex:indexPath.row] objectForKey:#"UserName"];

Answer 6

Your mutable array has elements of dictionary type. so while updating the text in table cell try to grab dictionary from array based on your indexPath.row and then objectForKey: for whichever key you want to use. see code below
you should try to use
cell.textLabel.text = [[yourMutableArr objectAtIndex:indexPath.row] valueForKey:#"UserName"];
cell.detailTextLabel.text = [[yourMutableArr objectAtIndex:indexPath.row] valueForKey:#"Password"];
and you can use the default separater of table cells.