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truongngoclinh/UITextFieldMaxLengths.m

Created July 12, 2017 10:41
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Set maxLength = 2 to UITextField
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UITextFieldMaxLengths.m
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
// Prevent crashing undo bug
if(range.length + range.location > textField.text.length)
{
return NO;
}
NSUInteger newLength = [textField.text length] + [string length] - range.length;
return newLength <= 2;
}
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set delegate to UITextFieldDelegate

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