I've got a UISearchBar in my UINavigationItem's titleView associated with a UISearchController. When I navigate back, it appears to flash. Anyone seen this before?
vid of flash
@interface HNTileSearchViewController () <HNTileSearchResultsProtocol, SWRevealViewControllerDelegate, UISearchBarDelegate, HNSetSearchFiltersProtocol, HNKeywordResultsProtocol>
...
@property (nonatomic, strong) UISearchController *searchController;
@property (nonatomic, strong) UISearchBar * searchBarTop;
...
@end
@implementation HNTileSearchViewController
...
- (void) customPreSetup {
HNKeywordResultsTableViewController * searchResultsController = [self.storyboard instantiateViewControllerWithIdentifier:HNKeywordResultsTableViewControllerStoryboardIdentifier];
searchResultsController.delegate = self;
_searchController = [[UISearchController alloc] initWithSearchResultsController:searchResultsController];
_searchController.searchResultsUpdater = searchResultsController;
_searchController.hidesNavigationBarDuringPresentation = NO;
_searchController.dimsBackgroundDuringPresentation = NO;
_searchBarTop = _searchController.searchBar;
_searchBarTop.delegate = self;
_searchBarTop.placeholder = NSLocalizedString(@"Search heynay", nil);
_searchBarTop.showsCancelButton = NO;
_searchBarTop.showsScopeBar = NO;
self.navigationItem.titleView = _searchBarTop;
self.definesPresentationContext = YES;
}
- (void) viewDidLoad {
[super viewDidLoad];
[self customPreSetup];
...
}
....
@end
I had the same problem and I solved in two ways:
First, you can put the searchStyle to Prominent:
searchController.searchBar.searchBarStyle = .Prominent
I wrote it in Swift by the way, the problem with this solution is that the search icon and the text, and the placeholder has a darker color and if the background is a darker color it looks bad.
The second solution I found is this:
navigationController!.navigationBar.translucent=false
navigationController!.navigationBar.barTintColor=UIColor.redColor()
searchController.searchBar.barTintColor=UIColor.redColor()
searchController.searchBar.searchBarStyle = .Prominent
searchController.searchBar.translucent=false
The key is that both the navigation bar and the search bar isn't translucent and that both have the same color.
I hope this helps you
For me the case with blinking searchBar was caused by not setting the backgroundImage during searchBar setup.
Swift:
searchBar.backgroundImage = UIImage()
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