Dynamic Radio Button in Objective C - ios

Question

I want to design a dynamic radio button in my app
for (int f = 0; f<arr.count; f++) {
UILabel *lbl = [[UILabel alloc]init];
lbl.frame = CGRectMake(radio_x+10,radio_y+5 , radio_w, radio_h);
lbl.text = arr[f];
lbl.textColor = [UIColor blackColor];
[self.sub_View addSubview:lbl];
self.yourButton = [[UIButton alloc] initWithFrame:CGRectMake(xPosOfTxt,radio_y , 20, 20)];
[self.yourButton setImage: [UIImage imageNamed:#"RadioButton-Selected.png"]forState:UIControlStateNormal];
[self.yourButton setImage: [UIImage imageNamed:#"RadioButton-Unselected.png"]forState: UIControlStateSelected];
[self.yourButton setTag:baseRadioTag+f];
[self.sub_View addSubview:self.yourButton];
[self.yourButton addTarget:self action:#selector(radioSelected:) forControlEvents:UIControlEventTouchUpInside];
}
-(void)radioSelected:(UIButton*)sender {
self.yourButton.selected = false;
sender.selected = !sender.selected;
self.yourButton = sender; }
I did like this , this is working like , selecting all the options , i want to select only one option at once , if I selected option 1 -> option 2 should be unselected . If I selected option 2 -> option 1 should be deselected.Please help me to do this .

Answer 1

First of all to make things easier
create a array which can hold reference of all the buttons
#interface ViewController ()
{
NSMutableArray *btnArray;
}
Create an object of Array
- (void)viewDidLoad {
[super viewDidLoad];
btnArray = [NSMutableArray new];
/// Here is your code for creating buttons
}
Now add all created buttons to this array
// this is last line from your code where you create your UI
[self.yourButton addTarget:self action:#selector(radioSelected:) forControlEvents:UIControlEventTouchUpInside];
// add this line to add your button to array
[btnArray addObject:self.yourButton];
}
Now when you click button radioSelected method is called
NOTE -: Here can be two cases according to me, but i don't know which one you require so i am explaining both of them
CASE FIRST :-When you select or deselect buttons final output can be that there can be no button selected(all can be deselected)
-(void)radioSelected:(UIButton*)sender{
// here if button is selected, deselect it otherwise select it
[sender setSelected:!sender.isSelected];
for (UIButton* btn in btnArray) {
// here we mark all other button as deselected except the current button
if(btn.tag != sender.tag){
// here when you deselect all button you can add a if statement to check that we have to deselect button only if it is selected
if(btn.isSelected){
[btn setSelected:NO];
}
}
}
}
CASE SECOND:-When atleast one button will be selected
-(void)radioSelected:(UIButton*)sender{
// here if current button is already selected we will not allow to deselect it and return
if(sender.isSelected){
return;
}
// here working is as same as described above
[sender setSelected:!sender.isSelected];
for (UIButton* btn in btnArray) {
if(btn.tag != sender.tag){
[btn setSelected:NO];
}
}
}
You can test both cases and use according to your requirement.
Hope this works for you.
And let me know if you face any issues :)