Add Radio Button in Tableview Got Some Problem - iphone

Question

I know xcode don't have radio Button
so I try to add a custom button and make it action like a radio button
This is the image I use
and this is the code I set to cell
UIButton *but = [UIButton buttonWithType:UIButtonTypeCustom];
[but setImage:[UIImage imageNamed:#"radio-off.png"] forState:UIControlStateNormal];
[but setImage:[UIImage imageNamed:#"radio-on.png"] forState:UIControlStateSelected];
[but setFrame:CGRectMake(0, 0, 44, 44)];
[but addTarget:self action:#selector(radioButton:) forControlEvents:UIControlEventTouchUpInside];
cell.accessoryView= but;
and this is the problem I want to ask is
how can I give a void in - (IBAction)radioButton:(UIButton *)button
To control Two Radio Button in Two Rows
If Row 1 Radio button's selected is YES
btn in row 2 will be btn.state=NO and won't response the
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
It will be like this pic
How to set the if conditions in - (IBAction)radioButton:(UIButton *)button
this pic is fake...I only add the button in the cell...and changed the text color
Great Thanks to all stack overflow friends~

Answer 1

OK..here is how I add a button into a tableview :
in tableviewController.h :
#interface RootViewController : UITableViewController {
NSMutableArray *radioButtonArray;
}
#property (nonatomic ,retain)NSMutableArray *radioButtonArray;
in tableviewController.h.m
- (void)viewDidAppear:(BOOL)animated {
radioButtonArray = [NSMutableArray new];
for (int i = 0; i < 30; i ++) {
UIButton *radioButton = [UIButton buttonWithType:UIButtonTypeCustom];
[radioButton setImage:[UIImage imageNamed:#"radio-off.png"] forState:UIControlStateNormal];
[radioButton setImage:[UIImage imageNamed:#"radio-on.png"] forState:UIControlStateSelected];
[radioButton setFrame:CGRectMake(0, 0, 44, 44)];
[radioButton addTarget:self action:#selector(radioButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
[radioButtonArray addObject:radioButton];
}
[super viewDidAppear:animated];
}
and give it a (IBAction) void
- (IBAction)radioButtonPressed:(UIButton *)button{
[button setSelected:YES];
// Unselect all others.
for (UIButton *other in radioButtonArray) {
if (other != button) {
other.selected=NO;
}
}
}
than you can add your button into the cell
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
cell.accessoryView = [radioButtonArray objectAtIndex:[indexPath row]];
// Configure the cell.
return cell;
}

Answer 2

You will need an array of all the radio buttons. Remember that table cells get recycled/may not be visible, etc. so create an array just with the buttons and then grab the right button out of that array in your tableView:cellForIndexPath: method.
So in your tableView:cellForIndexPath: method you would do something like this:
cell.accessoryView = [myButtonArray objectAtIndex:[indexPath row]];
Then, in your radioButton: radioButtonPressed: method you would do:
// Select the pressed button.
[button setSelected:YES];
// Unselect all others.
for (UIButton *other in myButtonArray) {
if (other != button) {
[other setSelected:NO];
}
}