デリゲートがありますが、他のデリゲート行がないと機能しません。
- (id)initWithData:(NSData *)data delegate:(id <ParseOperationDelegate>)theDelegate {
self = [super init];
if (self != nil) {
self.dataToParse = data;
self.delegate = theDelegate;
}
appDelegate = (XMLAppDelegate *)[[UIApplication sharedApplication] delegate];
return self;
}
セルにデータをロードする必要がありますが、最初のスクロールの前にデータが表示されません。私に何ができる?
編集:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"productCell";
static NSString *PlaceholderCellIdentifier = @"placeholderCell";
int nodeCount = [appDelegate.products count];
if (nodeCount == 0 && indexPath.row == 0) {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:PlaceholderCellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:PlaceholderCellIdentifier];
cell.detailTextLabel.textAlignment = UITextAlignmentCenter;
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
cell.detailTextLabel.text = @"Loading...";
return cell;
}
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
if (nodeCount > 0) {
XMLProductView *listedProduct = [appDelegate.products objectAtIndex:indexPath.row];
cell.textLabel.text = listedProduct.name;
// cell.detailTextLabel.text = appRecord.artist;
if (!listedProduct.productImage) {
if (self.tableView.dragging == NO && self.tableView.decelerating == NO) {
[self startImageDownload:listedProduct forIndexPath:indexPath];
}
UIImageView *listedImage = (UIImageView *)[cell viewWithTag:1];
listedImage.image = [UIImage imageNamed:@"Placeholder.png"];
}
else {
UIImageView *listedImage = (UIImageView *)[cell viewWithTag:1];
listedImage.image = listedProduct.productImage;
}
}
return cell;
}