Issue #353
When using STPPaymentCardTextField from stripe-ios, the default behavior is when we touch outside to dismiss keyboard, it checks and focus on number text field is it is invalid
STPPaymentCardTextField.m
- (STPFormTextField *)currentFirstResponderField {
for (STPFormTextField *textField in [self allFields]) {
if ([textField isFirstResponder]) {
return textField;
}
}
return nil;
}
- (BOOL)canResignFirstResponder {
return [self.currentFirstResponderField canResignFirstResponder];
}
- (BOOL)resignFirstResponder {
[super resignFirstResponder];
BOOL success = [self.currentFirstResponderField resignFirstResponder];
[self layoutViewsToFocusField:nil
animated:YES
completion:nil];
[self updateImageForFieldType:STPCardFieldTypeNumber];
return success;
}
Then it calls [self.numberField becomeFirstResponder]; is validation on number fails
typedef void (^STPLayoutAnimationCompletionBlock)(BOOL completed);
- (void)layoutViewsToFocusField:(NSNumber *)focusedField
animated:(BOOL)animated
completion:(STPLayoutAnimationCompletionBlock)completion {
NSNumber *fieldtoFocus = focusedField;
if (fieldtoFocus == nil
&& ![self.focusedTextFieldForLayout isEqualToNumber:@(STPCardFieldTypeNumber)]
&& ([self.viewModel validationStateForField:STPCardFieldTypeNumber] != STPCardValidationStateValid)) {
fieldtoFocus = @(STPCardFieldTypeNumber);
[self.numberField becomeFirstResponder];
}
}
isUserInteractionEnabled
Be aware to use isUserInteractionEnabled on STPPaymentCardTextField as that can resign first responder when set to true and become first responder when set to false
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