解决UITextField输入到最大值不能删除的现象

解决UITextField输入到最大值不能删除的现象

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

{

    BOOL isAllowEdit = YES;

    if([string length]>range.length&&[textField.text length]+[string length]-range.length>_NAME_MAX_LENGTH_)

    {

        [textField resignFirstResponder];

        isAllowEdit = NO;

    }

   

   

   

    return isAllowEdit;

}