我希望能够在我的UITabBar(显示UITableView)上方显示ADBannerView。不幸的是我的横幅没有正确定位。它将出现在UITableView的正下方,然后一滚动,横幅就会保留在我的UITableView中间。
我希望横幅显示在UITabBar的正上方,并允许UITableView在用户拖动时滚动横幅。
-(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's 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;
}];
}
答案 0 :(得分:2)
我想出了如何在不使用内置UITableViewController
的自定义UIViewController
的情况下为常规UITableView
执行此操作。诀窍是动态调整横幅视图的位置,使其始终位于可见区域的底部。
您只需将横幅视图添加为子视图并相应地调整表格插图:
- (void)viewDidLoad
{
[super viewDidLoad];
...
//init banner and set it's 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);
}
滚动表格时,您需要根据内容偏移调整横幅位置:
- (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;
}
我的示例是针对底部定位的横幅,但很容易更改计算以将其应用于放置在表格顶部的横幅。
答案 1 :(得分:0)
您应该创建一个视图,将您的tableview和横幅广告保存为单独的实体,而不是诉诸于上面的hackery。也就是说,创建一个新的UIView,它将被设置为视图控制器的“视图”属性。在此视图中,将您的横幅广告放在屏幕外(其y原点应为横幅的高度为负),并且您的tableview的原点应为0,0。成功加载横幅后,将横幅设置为原点0,0并将tableview的原点移动到0,bannerHeight。
这将为您提供您在iAds上的WWDC10视频中看到的效果,如果您尚未观看,我建议您观看。