uiimageview - UIImageView 点击手势不适用于图像点击

Question

我在表格页脚中分配了一个图像，点击仅在图像左上角之外的几个像素上被识别，但不是在图像胶带上。你能纠正我在哪里做错了。我想在点击图像时调用一个方法。

这是代码。

-(UIView *) tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{    

if(section==1)
{
    UIView *headerView = [[UIView alloc] init];
    timgview = [[UIImageView alloc] initWithFrame:CGRectMake(285, 5, 20, 20)];
    timgview.image = [UIImage imageNamed:@"icon.png"];

    UITapGestureRecognizer *tapped = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(openURL:)];
    tapped.numberOfTapsRequired = 1;
    tapped.numberOfTouchesRequired = 1;
    [timgview addGestureRecognizer:tapped];
    timgview.userInteractionEnabled = YES;

    [headerView addSubview:timgview];

    return headerView;
 }
}

-(void)openURL:(id) sender
{
    NSLog(@"Opening URL");
}