How to receive touches on UIPickerview using viewForRow delegate? - iphone

Question

Could anyone help me out. I'm trying to implement multiple selection on UIPickerview(in iOS 7). With few references from the stack overflow ,i have done as below,
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view {
UITableViewCell *cell = (UITableViewCell *)view;
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil];
[cell setBackgroundColor:[UIColor clearColor]];
[cell setBounds: CGRectMake(0, 0, cell.frame.size.width -20 , 44)];
cell.tag = row;
cell.userInteractionEnabled = YES;
UITapGestureRecognizer *singleTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(toggleSelection:)];
singleTapGestureRecognizer.numberOfTapsRequired = 1;
singleTapGestureRecognizer.delegate= self;
[cell addGestureRecognizer:singleTapGestureRecognizer];
[self.doorSelectionPickerView addGestureRecognizer:singleTapGestureRecognizer];
}
//TO DO FOR CHECKMARK
cell.textLabel.text = #"1";
return cell;
}
After trying this, its not receiving the tap gesture, and thus toggleSelection method is not invoked.
Note: UIpickerview is given as input view of UITextField
userSafeDoorTextfeild.inputView = [self doorSelectionPickerView];

Answer 1

I fixed the issue and could help someone who are in this troubled situation.
-(UIView *)pickerView:(UIPickerView *)pickerView viewForRow:
(NSInteger)row forComponent:(NSInteger)component
reusingView:(UIView *)view {
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil];
[cell setBackgroundColor:[UIColor clearColor]];
[cell setBounds: CGRectMake(0, 0, cell.frame.size.width -20 , 44)];
cell.tag = row;
cell.userInteractionEnabled = YES;
UITapGestureRecognizer *recognizer = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(showTimePicker:)];
[recognizer setNumberOfTapsRequired:1];
[recognizer setDelegate:self];
if(pickerView.tag == DOORSELECTION_PICKER_TAG){
NSLog(#"its door selection category");
*[pickerView addGestureRecognizer:recognizer];*
}
}
}
Instead of adding the tap gesture to the class scope picker view, add the gesture to this method picker view object returned in viewForRow delegate method after checking the tag.