Custom UITableViewCells with a programmatically created table - iphone

Question

When Ever I try to load data from an array into my table using custom cells it only shows the last cell like its overwriting all the cells until I Get to the end of the list. The table was created programmatically and when the cells don't load the blank table scrolls. If however I load the cells then only the last cell shows up and it won't scroll.
I figure I made a typo or something but I can't really see anything that would be of much help. The parser works and the array is fine its just that the cells are acting strange. I wanted to make it so that I had a fixed bar over the table as well but first I needed to get the custom cells to show up in the table and scroll properly
schedule.h
#interface Schedule : UIViewController <UITableViewDelegate, UITableViewDataSource> {
IBOutlet UITableView *newsTable;
UIActivityIndicatorView *activityIndicator;
CGSize cellSize;
NSXMLParser *fileParser;
NSMutableArray * events;
NSMutableArray * announcements;
NSMutableDictionary * item;
NSString *currentElement;
NSMutableString * currentTitle, * currentDate, * currentSummary, * currentId, * curr entTime, *currentContent;
UITableViewCell *appCell;
}
#property(nonatomic, retain)IBOutlet UITableView *newsTable;
#property(nonatomic, retain)IBOutlet UITableViewCell *appCell;
-(void)parseXMLFileAtURL:(NSString *)URL;
#end
schedule.m
- (void)loadView{
UITableView *tableView = [[UITableView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]
style:UITableViewStylePlain];
tableView.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;
tableView.delegate = self;
tableView.dataSource = self;
tableView.tag = 4;
[tableView reloadData];
self.view = tableView;
[tableView release];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [events count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"MyCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
[[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:self options:nil];
cell = appCell;
self.appCell = nil;
}
// Configure the cell.
UILabel *label;
label = (UILabel *)[cell viewWithTag:1];
int eventIndex = [indexPath indexAtPosition: [indexPath length] - 1];
label.text = [[events objectAtIndex: eventIndex] objectForKey: #"event"];
return cell;
}
- (void)parserDidEndDocument:(NSXMLParser *)parser {
NSLog(#"webpage parsed");
NSLog(#"events array has %d items", [events count]);
newsTable = (UITableView*)[self.view viewWithTag:4];
[newsTable reloadData];
}
I added more code the problem may be somewhere else.

Answer 1

I think your problem is that the cell is being released. When you call self.appCell = nil;, the object will be released and the variable set to nil. Try changing cell = appCell; to cell = [[appCell retain] autorelease]; so that the cell is retained long enough for the table view to retain it again.
Also, you could change int eventIndex = [indexPath indexAtPosition: [indexPath length] - 1]; to int eventIndex = indexPath.row;. The row and section properties were added to NSIndexPath specifically for use in UITableView, and it is guaranteed that the index path passed to cellForRowAtIndexPath: will contain exactly two indices.

Answer 2

try with following code;
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *CellIdentifier = #"CellIdentifier";
CustomCell *cell = (CustomCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; // CustomCell is the class for standardCell
if (cell == nil)
{
NSArray *objectList = [[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:self options:nil];
for (id currentObject in objectList) {
if([currentObject isKindOfClass:[UITableViewCell class]]){
cell = (CustomCell*)currentObject;
break;
}
}
cell.label.text = [[events objectAtIndex: indexPath.row] objectForKey: #"event"];
}
return cell;
}
when you load the xib file with NSBundle, it will return an array of Bundle. Then you have to check it and then use it.
If you tried like;
NSString *memberName; // member variable
NSString *name = memberName;
memberName = nil;
// the member variable "memberName, giving the reference to name;
//So if you set memberName as nil, name also become a nil value.
// You have to use like;
name = [memberName retain];
memberName = nil;
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I think it will help you.