In iOS 5 TableViewController is not scrolling and not calling didSelectRowAtIndexPath - ios5

Question

i ve upgrated to iOS 5 with XCode 4.2 version.
since i ve upgraded i'm not able to create proper workign table view controller.
1) Table view is shown on the device, but when i try to scroll up, it crashes without any error message
2) when i try to select a cell , didSelectRowAtIndexPath is not called.
NOTE: the same code was workign for me before upgrating to iOS5.
This is the code for TableViewController.m file
#import "CTableViewController.h"
#implementation CTableViewController
#synthesize arrNames;
-(id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
NSLog(#"CTableViewController::initWithStyle");
// Custom initialization
}
return self;
}
-(void)viewDidLoad
{
[super viewDidLoad];
arrNames = [[NSMutableArray alloc]initWithObjects:#"Peter Frank Brauer",#"Robert Schneider",#"Winfried Walter Kem",#"Eugen Germen Bachle",#"Clara Weib",#"Heinz Guther Winkler",#"Roland Bendel",#"Swen Aschemeyer",#"Patrick Bodingmeier",nil];
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return [self.arrNames 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];
}
// Configure the cell...
cell.textLabel.text = [self.arrNames objectAtIndex:indexPath.row];
cell.textLabel.font = [UIFont systemFontOfSize:16];
NSLog(#"CTableViewController::cellForRowAtIndexPath");
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"called didSelectRow method");
}
#end
Thank you, Please help
Suse

Answer 1

If it's crashing without any error message than it's probably a memory management issue and it is likely to happen because of some other part of the code, or even because a wrongly formatted nslog.
The compiler doesn't seem to notice a few obvious things like setting a fraction value for an int which will crash the app in an instant but without any meaningful error message.
Try to look for mundane things in your code and not just in the tableView implementation.
Also, is there any specific reason your are populating your arrNames with alloc,init (non-autorelease) instead of arrayWithObjects?
Also: Run the static analyzer! It may help. Keep the Run button pressed and an Analyze button will pop up.

Answer 2

I copy and pasted your source code into a fresh project. A few things jumped out at me.
You are subclassing UITableViewController. Try just subclassing UIViewController, and delete your initWithStyle method.
Make sure that in the nib, the tableview delegate and datasource are both attached to File's Owner.
If you are still experiencing crashes, then this code is NOT your problem.

Answer 3

How you can select a row if is crashing first?
By the way,the code seems to be not the problem.
Try this after restarting your Xcode:
Go to Organizer
Select the Project tab
Click on your opened project and DELETE Derived data.
Then wait for the re-indexing. (You can see the top bar loding and the code with new index target).
So like usual Clean All Target and Build.
It works for me in similar cases.
Hope it help.

Answer 4

in My case it was controller instance declared locally and it was losing delegade so i declared instance in header and everything works.