//标题限制在 30个字以内

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

{

        if (range.location>=)

        {

            UIAlertView *alertNums = [[UIAlertView alloc]initWithTitle:@"输入提示" message:@"标题字数限制在30字以内！" delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定", nil];

            [alertNums show];

            return  NO;

        }

        else

        {

            return YES;

        }

}

//内容限制在100个字以内;

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text

{

    if (range.location>=)

    {

        UIAlertView *alertNums = [[UIAlertView alloc]initWithTitle:@"输入提示" message:@"内容限制在100字以内！" delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定", nil];

        [alertNums show];

        return  NO;

    }

    else

    {

        return YES;

    }

}