UITextField becomes first responder by itself...? - ios

Question

This happens only on device and not on simulator..
I have two custom views and both have a UITextField in them(Child1 and Child2).
Both these views are placed on another UIView (Say viewA).
Now my requirement is such that when text is entered in one of the textfield I need to clear the other text fields content, so in the textFieldDidChange: method I inform viewA and than it iterates over its subview finds Child1 and sets its properties. But as soon as I access the textField of this Child1 to enable its userInteraction or and set its text to nil. This textfield now becomes the first responder.
I am not really sure why it does that. You can look at the below code to get more info.
Method inside viewA:
for (UIView *view in [self subviews])
{
if ([view isKindOfClass:[ChildView class]])
{
ChildView *concernedCustomerView = (ChildView *)view;
if (concernedCustomerView.typeOfCompartment == CompartmentTypeNone)
{
[concernedCustomerView.checkBoxButton setSelected:NO];
[concernedCustomerView.countSwitch setOn:NO animated:YES];
concernedCustomerView.countTextField.userInteractionEnabled = YES;
concernedCustomerView.countTextField.alpha = 1.0f;
concernedCustomerView.countTextField.text = nil;
}
}
}
Method inside custom Child View
-(void)textFieldDidChange:(id)sender
{
NSString *note = _countTextField.text;
note = [note stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
//If we are checking note for nil it should be before calling trimming white space
if (note && note.length > 0)
{
[_checkBoxButton setSelected:YES];
if (note.length == 3 && note.integerValue == 999)
{
[_countSwitch setOn:YES animated:YES];
_countTextField.userInteractionEnabled = NO;
_countTextField.alpha = 0.5f;
_countTextField.text = nil;
// [_countSwitch sendActionsForControlEvents:UIControlEventValueChanged];
}
}
else
{
[_checkBoxButton setSelected:NO];
}
if ([self.delegate conformsToProtocol:#protocol(ChildViewDelegate)] &&
[self.delegate respondsToSelector:#selector(adjustStateOfOtherControls:andCheckBoxStatus:)])
{
[self.delegate adjustStateOfOtherControls:_typeOfCompartment andCheckBoxStatus:_checkBoxButton.selected];
}
}

Answer 1

Do not set the view object to nil because they are alive and your controller is still active,
try to set _countTextField.text = #""; so that your textfield become empty.

Answer 2

Just a suggest:
1) Instead of manual iterate subviews you can assign tag to child views and uitextfields e.g:
child1View.tag = 100;
child2View.tag = 200;
...
textField1.tag = 10;
textField2.tag = 20;
then get child references from parent viewA by:
UIView *child1View = [viewA viewWithTag:100];
UIView *child2View = [viewA viewWithTag:200];
2) Set child views textfield delegate to a common viewcontroller
3) Handle one single
- (void)textFieldDidBeginEditing:(UITextField *)textField
4) Iniside this method check
if(textField.tag==10)
{
do stuff
}
else if(textfield.tag==20)
{
do other stuff
}
Hope it helps !