弹出提示框

            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:@"最多只能输入500字" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];

            [alert show];

            [alert release];

 

- (void) alertView:(UIAlertView *)alertview clickedButtonAtIndex:(NSInteger)buttonIndex

{

    NSString  *buttonTitle = [alertview buttonTitleAtIndex:buttonIndex];

    

    if ([buttonTitle isEqualToString:@"确定"])

    {

       [self sendPost];

    }

}