Hide UISearchBar until user scrolls? - ios

Question

I implemented a search bar and search display controller on top of my table view.
When the view loads the search bar and relative scopes are always visible.
Is there a simple way to hide it until the user scrolls down, like it happens in the Music app?

Answer 1

You need to add search bar as a header of the table view and then set the contentoffset property of table view in viewDidLoad as,
[self.tableView setContentOffset:CGPointMake(0,44) animated:YES];//or (0, 88) depends on the height of it
For search display controller, you can try this as well,
[self.searchDisplayController setActive:NO animated:YES];

Answer 2

another approach without hardcode
[self.tableView setContentOffset:CGPointMake(0.0, self.tableView.tableHeaderView.frame.size.height) animated:YES];

Answer 3

After a few hours of hair pulling, something that works
on iOS 9
doesn't depend on the number of rows in the table
with variable height rows
Considering the searchbar is the tableView.tableHeaderView
#interface MyTableViewController ()
#property (nonatomic, assign) BOOL firstLayout;
#end
- (void) viewDidLoad {
[super viewDidLoad];
self.firstLayout = YES;
//your code
}
-(void)viewDidLayoutSubviews{
[super viewDidLayoutSubviews];
if(self.firstLayout){
CGPoint offset = CGPointMake(0, self.tableView.tableHeaderView.frame.size.height - self.tableView.contentInset.top);
[self.tableView setContentOffset:offset];
self.firstLayout = NO;
}
}

Answer 4

for iOS 7 and using UINavigationController
[self.tableView setContentOffset:CGPointMake(0, self.searchBar.height + self.navigationController.navigationBar.height)];

Answer 5

Best way i did reload tableview in
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:YES];
[self performSelector:#selector(reload:) withObject:nil afterDelay:0.0];
self.edgesForExtendedLayout = UIRectEdgeNone;
}
- (void)reload:(__unused id)sender {
[self.searchDisplayController setActive:YES];
[self.tableView reloadData];
[self.refreshControl endRefreshing];
} else {
[self.refreshControl endRefreshing];
[[[UIAlertView alloc]initWithTitle:#"Error" message:[error localizedDescription] delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil, nil] show];
}
}
Thanks

Answer 6

This works fine on iOS9+
- (void)viewDidLoad {
[super viewDidLoad];
dispatch_async(dispatch_get_main_queue(), ^{
self.tableView.contentOffset = CGPointMake(0, -20);
});
}