SubClass UIButton To retain Check Selected Using Custom TableCell in iphone - iphone

Question

I have a TableView and I am Using Custom TableCell.In TableCell I have a button. Now in TableView I have created a Bool Value to check whether the Check button is Selected or not.
The problem is When I scroll the Table the cell get reused so the button gets Automatically deselected.
if (checkButton.selected==NO) {
NSLog(#"ooo");
checkButton.selected=YES;
checkSelected=YES;
}
else {
NSLog(#"Okkkkk");
checkButton.selected=NO;
checkSelected=NO;
}
I have an idea to Subclass UIButton with a custom Property of BOOl.But I dont know to workout. Can anyone help me out?

Answer 1

You can keep a track of button selected using the array. Just set value 1 at particular index when button is selected. And set it to 0 when it's deselected.
And then while creating the cell you can check in as follows:
if ([[arr_Check objectAtIndex:indexPath.row] isEqualToString:#"0"])
checkButton.selected=NO;
else
checkButton.selected=YES;

Answer 2

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellIdentifier = [NSString stringWithFormat:#"Cell%i%i",indexPath.section,indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
}
else
{
NSArray *cellSubs = cell.contentView.subviews;
for (int i = 0 ; i < [cellSubs count] ; i++)
{
[[cellSubs objectAtIndex:i] removeFromSuperview];
}
}
UICheckBox *checkBox = [[UICheckBox alloc] initWithFrame:CGRectMake(0, 0, 44.0, 44.0)];
checkBox.tag = indexPath.row;
checkBox.titleLabel.tag = indexPath.section;
[checkBox addTarget:self action:#selector(checkBoxPressed:) forControlEvents:UIControlEventTouchUpInside];
for (NSIndexPath *temp in selectedObjects) {
if ([temp isEqual: indexPath]) {
checkBox.selected = TRUE;
}
}
[cell.contentView addSubview:checkBox];
return cell;
}
-(void)checkBoxPressed:(UICheckBox*)sender
{
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:sender.tag inSection:sender.titleLabel.tag];
if (sender.selected)
[selectedObjects removeObject:indexPath];
else
[selectedObjects addObject:indexPath];
sender.selected = !sender.selected;
NSLog(#"\n\n%#",selectedObjects);
}
Here selectedObjects is a global NSArray and UICheckBox is a subClass of UIButton

Answer 3

#interface CustomButton : UIButton
#property(nonatomic) BOOL isSelected;
// DO NOT FORGET TO SYNTHESIZE MY isSelected
#end
since you are using a custom cell. you can just make a property CustomButton in your custom cell.
#interface YourCustomCell : UITableViewCell
#property(nonatomic, strong) CustomButton *button;
#end
in your cellForRowAtIndexPath method
-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath {
YourCustomCell *cell = (YourCustomCell*)[tableView dequeueReusableCellWithIdentifier:cellType];
if (cell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:cellType owner:nil options:nil];
cell = (YourCustomCell*)[nib objectAtIndex:0];
}
//you can add a target to your button here
cell.button addTarget:self action:#selector(changeButtonState:).....
if(cell.button.isSelected == YES)
NSLog(#"selected");
else
NSLog(#"not selected");
-(void)changeButtonState:(CustomButton*)button
{
if(button.isSelected) button.isSelected = NO;
else button.isSelected = YES;
[yourTableView reloadData];
}