如何以动画方式调整视图大小？

Question

我正在调整表 headerView 的大小。我想将其动画化，但我不知道如何做。

-(void)layoutForBanner
{
    // 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)
    {
        headerView.frame = CGRectMake(0, 0, 320, 94);
    }
    else
    {
        headerView.frame = CGRectMake(0, 0, 320, 50);
    }   

    [self.tableView setTableHeaderView:headerView];

}

Answer 1

这应该可以解决问题。

[UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:.5];
    headerView.frame = CGRectMake(0, 0, 320, 50);
    [UIView commitAnimations];