Multiple Check Box in UITableview iPhone - iphone

Question

I am new in iOS
I am creating dynamically buttons in my tableview
i had set a image on button for check and uncheck
What i have to do is when i tap(or check) on button the data on indexpath row will add in my array.
And if i deselect it , data removes from my array. Please Help me
-(void)btnForCheckBoxClicked:(id)sender
{
UIButton *tappedButton = (UIButton*)sender;
indexForCheckBox= [sender tag];
if([tappedButton.currentImage isEqual:[UIImage imageNamed:#"checkbox_unchecked.png"]])
{
[sender setImage:[UIImage imageNamed: #"checkbox_checked.png"] forState:UIControlStateNormal];
strinForCheckBox= [ApplicationDelegate.ArrayForSearchResults objectAtIndex:indexForCheckBox];
[arrForCheckBox addObject:strinForCheckBox];
NSLog(#"Sender Tag When Add %d", indexForCheckBox);
NSLog(#"Array Count Check Box %d",[arrForCheckBox count]);
}
else
{
[sender setImage:[UIImage imageNamed:#"checkbox_unchecked.png"]forState:UIControlStateNormal];
[arrForCheckBox removeObjectAtIndex:indexForCheckBox];
NSLog(#"Sender Tag After Remove %d", indexForCheckBox);
NSLog(#"Array Count Uncheck Box %d",[arrForCheckBox count]);
}
}

Answer 1

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
}
if ([selectedRowsArray containsObject:[contentArray objectAtIndex:indexPath.row]) {
cell.imageView.image = [UIImage imageNamed:#"checked.png"];
}
else {
cell.imageView.image = [UIImage imageNamed:#"unchecked.png"];
}
UITapGestureRecogniser *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleChecking:)
[cell.imageView addGestureRecognizer:tap];
[tap release];
cell.textLabel.text = [contentArray objectAtIndex];
return cell;
}
- (void) handleChecking:(UITapGestureRecognizer *)tapRecognizer {
CGPoint tapLocation = [tapRecognizer locationInView:self.tableView];
NSIndexPath *tappedIndexPath = [self.tableView indexPathForRowAtPoint:tapLocation];
if (selectedRowsArray containsObject:[contentArray objectAtIndex:tappedIndexPath.row]) {
[selectedRowsArray removeObject:[contentArray objectAtIndex:tappedIndexPath.row]];
}
else {
[selectedRowsArray addObject:[contentArray objectAtIndex:tappedIndexPath.row]];
}
[self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:tappedIndexPath] withRowAnimation: UITableViewRowAnimationFade];
}

Answer 2

I think this question has been answered some time ago! Check it out first and tell us if this is what you are looking for ?
How to add checkboxes to UITableViewCell??
image http://img208.yfrog.com/img208/6119/screenshotkmr.png

Answer 3

You can add this on your button click method.
First set Bool value which set yes on one click and No In second click and when you first click add that index value in array using array addobject property and other click removeobject property.
-(void)list
{
if(isCheck==YES)
{
//add array object here
isCheck=NO;
}
else if(isCheck==NO)
{
//remove array object here
isCheck=YES;
}
}

Answer 4

I have found another way. Code extracted from #The Saad And, i had just modified with key/value pairs as useful one like below code -
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
}
if ([[selectedRowsArray objectAtIndex:indexPath.row] containsObject:#"YES"])
cell.imageView.image = [UIImage imageNamed:#"checked.png"];
else
cell.imageView.image = [UIImage imageNamed:#"unchecked.png"];
UITapGestureRecogniser *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleChecking:)
[cell.imageView addGestureRecognizer:tap];
[tap release];
cell.textLabel.text = [contentArray objectAtIndex];
return cell;
}
- (void) handleChecking:(UITapGestureRecognizer *)tapRecognizer {
CGPoint tapLocation = [tapRecognizer locationInView:self.tableView];
NSIndexPath *tappedIndexPath = [self.tableView indexPathForRowAtPoint:tapLocation];
if ([[selectedRowsArray objectAtIndex:tappedIndexPath.row] containsObject:#"YES"])
[selectedRowsArray replaceObjectAtIndex:tappedIndexPath.row withObject:[NSSet setWithObject:#"NO"]];
else
[selectedRowsArray replaceObjectAtIndex:tappedIndexPath.row withObject:[NSSet setWithObject:#"YES"]];
[self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:tappedIndexPath] withRowAnimation: UITableViewRowAnimationFade];
}
Add, the objects for selectedRowsArray as below with the count of your self.tableView's row count. So, you need to add the bool values as below
for ( int i = 0; i < tableViewRowCount; i++ ) { // tableViewRowCount would be your tableView's row count
....
....
....
[selectedRowsArray addObject:[NSSet setWithObject:#"NO"]];
....
....
}
Hope this helps! Cheers!
Update
With the use of updated code you don't need to keep key/value pair of NSMutableDictionary for overkilling that. NSSet provides you better way with this.