Cannot prevent UITableView from moving when bounds change - ios

Question

I have an UITableView created using this method (inside a UIViewController):
- (void) viewDidLayoutSubviews {
if (!self.tableView) {
self.tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 120, self.view.bounds.size.width, self.view.bounds.size.height-120) style:UITableViewStylePlain];
self.tableView.superview.autoresizingMask= NO;
// [self.tableView setAutoresizingMask:UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleTopMargin];
self.tableView.delegate = self;
self.tableView.dataSource = self;
self.tableView.backgroundColor = [UIColor blueColor];
self.edgesForExtendedLayout = UIRectEdgeNone;
[self.tableView setShowsHorizontalScrollIndicator:NO];
[self.tableView setShowsVerticalScrollIndicator:NO];
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
[self.view addSubview:self.tableView];
}
}
When the application enters the background and the view controller is then reloaded, the tableView moves lower as a result (I think) of the bounds changing. However, I have tried turning auto layout off in storyboard, turning the autoresizesSubviews "BOOL" of self.view and of self.tableView and have even tried changing the constraints on the tableView. Every time the view loads, the content moves. Furthermore, I've put the initiation into viewDidLoad, but then the actual sizes don't map to the screen. How do I force the tableView to stay fixed after initiating it in viewDidLayoutSubviews?

Answer 1

viewDidLoad is called only once in the view controller lifecycle, and is called before the view has it's bounds property set. This is the perfect place to initialize your subviews.
-(void)viewDidLoad
{
[super viewDidLoad];
self.tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 120, self.view.bounds.size.width, self.view.bounds.size.height-120) style:UITableViewStylePlain];
self.tableView.superview.autoresizingMask= NO;
self.tableView.delegate = self;
self.tableView.dataSource = self;
self.tableView.backgroundColor = [UIColor blueColor];
self.edgesForExtendedLayout = UIRectEdgeNone;
[self.tableView setShowsHorizontalScrollIndicator:NO];
[self.tableView setShowsVerticalScrollIndicator:NO];
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
[self.view addSubview:self.tableView];
}
viewDidLayoutSubviews is called every time the bounds change, so setting the frame in that method will ensure that your tableView is always sized according to the current bounds:
-(void)viewDidLayoutSubviews
{
[super viewDidLayoutSubviews];
self.tableView.frame = CGRectMake(0, 120, self.view.bounds.size.width, self.view.bounds.size.height-120);
}