The problem of positioning the banner on top of my UITableView

Question

I want to be able to display an ADBannerView directly above my UITabBar (which displays a UITableView). Unfortunately, my banner is not positioned correctly. It will appear right below the UITableView, and then, as soon as I scroll, the banner will remain in the middle of my UITableView.

I want the banner to appear directly above the UITabBar and allow the UITableView to scroll behind the banner when the user drags.

-(void)layoutForCurrentOrientation:(BOOL)animated
{
    CGFloat animationDuration = animated ? 0.2 : 0.0;
    // by default content consumes the entire view area
    CGRect contentFrame = self.view.bounds;
    // the banner still needs to be adjusted further, but this is a reasonable starting point
    // the y value will need to be adjusted by half the banner height to get the final position
    CGPoint bannerCenter = CGPointMake(CGRectGetMidX(contentFrame), CGRectGetMaxY(contentFrame));
    CGFloat bannerHeight = 0.0;

    // First, setup the banner content size and adjustment based on the current orientation
    if(UIInterfaceOrientationIsLandscape(self.interfaceOrientation))
    {
        banner.currentContentSizeIdentifier = ADBannerContentSizeIdentifier480x32;
        bannerHeight = 32.0;
    }
    else
    {
        banner.currentContentSizeIdentifier = ADBannerContentSizeIdentifier320x50;
        bannerHeight = 50.0;
    }

    // Depending on if the banner has been loaded, we adjust the content frame and banner location
    // to accomodate the ad being on or off screen.
    // This layout is for an ad at the bottom of the view.
    if(banner.bannerLoaded)
    {
        contentFrame.size.height -= bannerHeight;
        bannerCenter.y -= bannerHeight / 2.0;
    }
    else
    {
        bannerCenter.y += bannerHeight / 2.0;
    }

    // And finally animate the changes, running layout for the content view if required.
    [UIView animateWithDuration:animationDuration
                     animations:^{
                         self.tableView.frame = contentFrame;
                         [self.tableView layoutIfNeeded];

                         banner.center = bannerCenter;
                     }];
}

Answer 1

, UITableViewController UIViewController UITableView . , , .

:

- (void)viewDidLoad 
{
        [super viewDidLoad];

        ...

        //init banner and set it frame (here we use 320x50 banner) 
        self.bannerView = [[UIView alloc] init];
        self.bannerView.frame = CGRectMake(0, self.view.frame.size.height - 50, 320, 50);

        //add as subview
        [self.view addSubview:self.bannerView];

        //set proper bottom inset depending on your banner height
        self.tableView.contentInset = UIEdgeInsetsMake(0, 0, 50, 0);
}

, :

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    //refresh banner frame during the scrolling
    CGRect bannerFrame = self.bannerView.frame;
    bannerFrame.origin.y = self.view.frame.size.height - 50 + self.tableView.contentOffset.y;
    self.bannerView.frame = bannerFrame;
}

, , , .

Answer 2

, , . , UIView, view views view. ( , ), - 0,0. , 0,0, 0, bannerHeight.

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