iPhone Application Exit when scrolling the UITableView - iphone

Question

I have declared a NSMutableArray and I populated it with information from the database. The table displays information well. But when I scroll down, the application exits. Seems like its loosing the pointer to the array.
Here is the code for declaration of the array:
#interface RootViewController : UITableViewController <CLLocationManagerDelegate> {
sqlite3 *database;
NSMutableArray *storeList;
CLLocationManager *locationManager;
CLLocation *startingPoint;
}
#property (nonatomic, retain) NSMutableArray *storeList;
#property (nonatomic, retain) CLLocationManager *locationManager;
#property (nonatomic, retain) CLLocation *startingPoint;
- (void) createCopyOfDatabaseIfNeeded;
- (void) initializeStoreList;
- (void) getDistanceFromUserLocation;
Here I am initializing the array with object of type StoreInfo:
- (void) initializeStoreList{
self.storeList = [[NSMutableArray alloc] init];
//database is stored in the application bundle.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *dbPath = [documentsDirectory stringByAppendingPathComponent:kFileName];
if (sqlite3_open([dbPath UTF8String], &database)== SQLITE_OK) {
const char *sql = "select id, storename, ratings, lattitude, longitude from storeinformation";
sqlite3_stmt *statement;
if (sqlite3_prepare_v2(database, sql, -1, &statement, NULL) == SQLITE_OK) {
while (sqlite3_step(statement) == SQLITE_ROW) {
NSInteger *_pk = (NSInteger *) sqlite3_column_int(statement, 0);
NSString *_storeName = [NSString stringWithUTF8String:(char*) sqlite3_column_text(statement, 1)];
NSString *_ratings = [NSString stringWithUTF8String:(char*) sqlite3_column_text(statement, 2)];
double _lattitude = [[NSString stringWithUTF8String:(char*) sqlite3_column_text(statement, 3)] doubleValue];
double _longitude = [[NSString stringWithUTF8String:(char*) sqlite3_column_text(statement, 4)] doubleValue];
StoreInfo *si = [[StoreInfo alloc] initWithBasicInformation:_pk storeName:_storeName ratings:_ratings lattitude:_lattitude longitude:_longitude];
[self.storeList addObject:si];
[si release];
}
}
sqlite3_finalize(statement);
} else {
sqlite3_close(database);
NSAssert1(0,#"Failed to open the database with message '%s'.", sqlite3_errmsg(database));
}
}
here is the constructor for StoreInfo object
-(id)initWithBasicInformation:(NSInteger *)_pk storeName:(NSString *) _storeName ratings:(NSString *) _ratings lattitude:(double) _lattitude longitude:(double) _longitude;
{
if (self = [super init]) {
self.primaryKey = _pk;
self.storeName = _storeName;
self.ratings = _ratings;
self.lattitude = _lattitude;
self.longitude = _longitude;
}
return self;
}
Here is the code for displaying the cell:
- (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];
}
// Configure the cell.
StoreInfo *si = (StoreInfo *)[self.storeList objectAtIndex:indexPath.row];
cell.textLabel.text = si.storeName;
return cell;
}
The table displays alright first. But when I scroll down, this even gets fired and somehow it is not able to find reference to the si.storeName.
I have spent hours trying to debug the issue. Any help is greatly appreciated.

Answer 1

First of all, how have you defined the property for the problematic field?
Is it retain?
Secondly, Can you access any other property in si?
And finally, I see that there is a memory leak in self.storeList = [[NSMutableArray alloc] init]; - the object is retained twice (in init and in the property setter)...