How to make stationary background view in UITableView? - iphone

Question

I'm trying to add a view behind my grouped UITableView. Unfortunately, whenever I scroll, the background view moves as well. This happens even when I use [self.view insertSubview:backgroundView belowSubview:_tableView], or [_tableView setBackgroundView:backgroundView]. Why is this background view scrolling? Also, why does my tableView scroll, even though I have disabled scrolling? Are these related?
In app Delegate:
History *historyController = [[History alloc] init];
UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:historyController];
In History.m:
- (void)viewDidLoad {
CGRect frame = self.view.frame;
frame.origin.x = 0;
frame.origin.y = 0;
_tableView = [[UITableView alloc] initWithFrame:frame style:UITableViewStyleGrouped];
_tableView.delegate = self;
_tableView.dataSource = self;
[_tableView setScrollEnabled:NO];
[_tableView setBackgroundColor:[UIColor clearColor]];
_tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
UIView *bg = [[UIView alloc] initWithFrame:frame];
[bg setBackgroundColor:[UIColor scrollViewTexturedBackgroundColor]];
UIImageView *iv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"CenterFade.png"]];
iv.alpha = .750;
[bg addSubview:iv];
[iv release]; iv = nil;
[self.view addSubview:bg];
[self.view addSubview:_tableView];
[bg release]; bg = nil;
[_tableView release];
[super viewDidLoad];
}

Answer 1

Try
- (void)viewDidLoad {
CGRect frame = self.view.frame;
frame.origin.x = 0;
frame.origin.y = 0;
UIView *bg = [[UIView alloc] initWithFrame:frame];
[bg setBackgroundColor:[UIColor scrollViewTexturedBackgroundColor]];
UIImageView *iv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"CenterFade.png"]];
iv.alpha = .750;
[bg addSubview:iv];
[iv release];
iv = nil;
_tableView = [[UITableView alloc] initWithFrame:frame style:UITableViewStyleGrouped];
_tableView.delegate = self;
_tableView.dataSource = self;
[_tableView setScrollEnabled:NO];
[_tableView setBackgroundColor:[UIColor clearColor]];
_tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
[bg addSubview:_tableView];
[_tableView release];
_tableView = nil;
[self.view addSubview:bg];
[bg release];
bg = nil;
[super viewDidLoad];
}
If your controller is an UITableViewController just change it to an UIViewController<UITableViewDelegate, UITableViewDatasource> with a tableView property (It's the same)

Answer 2

I don't know why this is happening, but for some reason self.view is a UITableView and not a UIView. Creating a new UIView and setting it to self.view fixed the problem. I am not using a UITableViewController, but a UIViewController. No idea where the UITableView is coming from!

Answer 3

set [_tableView setBackgroundColor:[UIColor clearColor]];
and then put your background view under UITableView in UIViewController view hierarchy.

Answer 4

UITableView has a backgroundView property.
Swift:
var backgroundView: UIView?
Objective-C
#property(nonatomic, readwrite, retain) UIView *backgroundView
This view will not be moved when you scroll the tableView