Question

i have description , title in a cell .. some of the title has description some doesnt have . i want to animate ( increase the size ) the row based upon description , if there is no description the cell shouldnt increase the size where as if there is description the cell should increase . the data of title and description is fetched from sql db .i have created the animation part , i am having trouble in increase the size of cell only for description part .. – (void)tableViewUITableView *)tableView cellForRowIndexNSIndexPath *)indexPath i have defined descriptionlabel which gets value from descriptionArray

- (BOOL)cellIsSelected:(NSIndexPath *)indexPath;

@end

@implementation LOAnimatedCellDemoViewController

#define kCellHeight 50.0

- (void)viewDidLoad {
    [super viewDidLoad];

    selectedIndexes = [[NSMutableDictionary alloc] init];
}

- (void)viewDidUnload {
    [selectedIndexes release];
    selectedIndexes = nil;

    [super viewDidUnload];
}

- (BOOL)cellIsSelected:(NSIndexPath *)indexPath {
    // Return whether the cell at the specified index path is selected or not
    NSNumber *selectedIndex = [selectedIndexes objectForKey:indexPath];
    return selectedIndex == nil ? FALSE : [selectedIndex boolValue];
}



#pragma mark -
#pragma mark Tableview Datasource Methods

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return 20;
}

#pragma mark -
#pragma mark Tableview Delegate Methods

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    // Deselect cell
    [tableView deselectRowAtIndexPath:indexPath animated:TRUE];

    // Toggle 'selected' state
    BOOL isSelected = ![self cellIsSelected:indexPath];

    // Store cell 'selected' state keyed on indexPath
    NSNumber *selectedIndex = [NSNumber numberWithBool:isSelected];
    [selectedIndexes setObject:selectedIndex forKey:indexPath]; 

    // This is where magic happens...
    [demoTableView beginUpdates];
    [demoTableView endUpdates];
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    // If our cell is selected, return double height
    if([self cellIsSelected:indexPath]) {
        return kCellHeight * 2.0;
    }

    // Cell isn't selected so return single height
    return kCellHeight;
}

@end

Answer 1

in if([self cellIsSelected:indexPath]) line i added

if([self cellIsSelected:indexPath] && ![descriptionArray objectAtIndex:indexpath.row] isEqualToString:@" "])
i gave isEqualToString:@” “ cause in database column for items which has no description i gave single space character so that it indicates there is no description is available for the item –