Changing the height of UITableViewCell on selection and deselection - iphone

Question

I have a UITableView with cells , which on selected shows a popup with "Yes" or "No" confirmation ,When "Yes" is selected , the height of cell should be increased to 100 and its background image should change and if "No" is selected , nothing should happen and it should remain as a normal cell...
Similarly , if already selected cell is selected , again it shows up popup of "Yes" or "No" confirmation . If "Yes" is selected , the selected cell should convert into a normal cell with height 44 and background image is removed . If "No" is selected , then nothing happens and cell remains as a selected cell...
how to deal with height changes and background image changes in such condition ????
#import "TableViewController.h"
#interface TableViewController ()
#end
#implementation TableViewController
- (id)initWithStyleUITableViewStyle)style
{
self = [super initWithStyle:style];
if (self)
{
objects = [NSArray arrayWithObjects:#"One",#"Two",#"Three",#"Four",#"Five",#"Six",#"Seven",#"Eight",#"Nine",#" Ten",#"Eleven",#"Twelve",#"Thirteen", nil];
selectedIndexPath = [[NSIndexPath alloc] init];
}
return self;
}
- (NSInteger)numberOfSectionsInTableViewUITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableViewUITableView *)tableView numberOfRowsInSectionNSInteger)section
{
// Return the number of rows in the section.
return [objects count];
}
- (UITableViewCell *)tableViewUITableView *)tableView cellForRowAtIndexPathNSIndexPath *)indexPath
{
NSString *CellIdentifier = [NSString stringWithFormat:#"Cell %d",indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseI dentifier:CellIdentifier];
cell.textLabel.text = [objects objectAtIndex:indexPath.row];
NSLog(#"cell description:- %#",[cell description]);
}
return cell;
}
- (CGFloat)tableViewUITableView *)tableView heightForRowAtIndexPathNSIndexPath *)indexPath
{
// if (indexPath == selectedIndexPath)
// {
// return 100 ;
// }
// if (indexPath == selectedIndexPath)
// {
// UITableViewCell *c = [self.tableView cellForRowAtIndexPath:indexPath];
// CGRect rect = c.frame ;
// rect.size.height = 100 ;
// c.frame = rect ;
// return 100;
// }
return 44;
}
-(void)tableViewUITableView *)tableView didSelectRowAtIndexPathNSIndexPath *)indexPath
{
if (selectedIndexPath == [self.tableView indexPathForSelectedRow])
{
UIAlertView *a = [[UIAlertView alloc] initWithTitle:#"DeSelect" message:#"DeSelect ??" delegate:self cancelButtonTitle:#"NO" otherButtonTitles:#"Yes", nil ];
[a show];
}
else
{
UIAlertView *a = [[UIAlertView alloc] initWithTitle:#"Select" message:#"Select ??" delegate:self cancelButtonTitle:#"NO" otherButtonTitles:#"Yes", nil ];
[a show];
}
}
-(void)alertViewUIAlertView *)alertView clickedButtonAtIndexNSInteger)buttonIndex
{
if (selectedIndexPath == [self.tableView indexPathForSelectedRow])
{
if (buttonIndex==1)
{
selectedIndexPath = [NSIndexPath indexPathForRow:-1 inSection:-1];
// [self tableView:self.tableView heightForRowAtIndexPath:selectedIndexPath];
//[self.tableView reloadData];
//[self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:selectedIndexPath] withRowAnimation:UITableViewRowAnimationFade];
//[self.tableView beginUpdates];
//[self.tableView endUpdates];
[self showForIndexPath:selectedIndexPath];
[self.tableView beginUpdates];
[self.tableView endUpdates];
}
}
else
{
if (buttonIndex==1)
{
selectedIndexPath = [self.tableView indexPathForSelectedRow];
//[self tableView:self.tableView heightForRowAtIndexPath:selectedIndexPath];
//[self.tableView reloadData];
//[self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:selectedIndexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
// [self.tableView beginUpdates];
// [self.tableView endUpdates];
[self showForIndexPath:selectedIndexPath];
[self.tableView beginUpdates];
[self.tableView endUpdates];
}
}
}
-(void)showForIndexPathNSIndexPath *)indexpath
{
UITableViewCell *c = [self.tableView cellForRowAtIndexPath:indexpath];
CGRect rect = c.frame ;
rect.size.height = 100 ;
c.frame = rect ;
//code to move the cells downward when a cell is selected
for(int i = indexpath.row ; i < [objects count];i++)
{
NSindexpath *row = [NSIndexPath indexPAthforRow:i+1 in Section:0];
UITableViewCell *tmp = [self.tableView cellforindexpath:row];
CGRect frame = tmp.frame;
CGpoint origin = frame.origin;
CGFloat y = origin.y ;
y = y+56; //(100-44)
origin.y = y ;
frame.origin = origin ;
tmp.frame = frame ;
}
NSLog(#"Cell %d :- %# indexpath:- %#",indexpath.row,[c description],indexpath);
}
P.S. -- You can see the attempts I have made to achieve the task by looking at the code that is commented

Answer 1

Keep a flag for yes or no and a index for selected row number.
-(CGFloat)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if ( flag == 1 && indexpath.row == index )
return 50;
else
return 30;
}
apply your logic of image also similarly when you create cell

Answer 2

please post the code what you have tried.
This link may help you.
Can you animate a height change on a UITableViewCell when selected?.
Use popup button index to change variable value and use that variable in
-(CGFloat)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
//change tablecell height based on variable value
}
-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0) {
}
}

Answer 3

Create two tableViewCell for the both casses. Then in your buttonTouch method, remove your previous cell using
- (void)deleteRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation;
And then add newCell using:
- (void)insertRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation;