Ios – UITableView content overlaps Status Bar when UISearchBar is active

I had to add the searchBar programmatically as a subview of the UICollectionReusableView, I could never getting it working through IB as I kept getting prototype error when assigning an outlet. Adding the search bar in the implementation file worked for me.

The relevant methods are the following.

-(void)viewDidLoad
{
    [super viewDidLoad];
    [self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:CellIdentifier];
    _objectChanges = [NSMutableArray array];
    _sectionChanges = [NSMutableArray array];
    [self performFetch];
    searchBar = [[UISearchBar alloc]
                  initWithFrame:CGRectMake(0.0, 50.0, self.view.bounds.size.width,
                                           44.0)];
    searchBar.placeholder = @"Search for channels";
    searchBar.tintColor = [UIColor blackColor];
    searchBar.delegate = self;
}


-(UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
    SupplementaryView *header = nil;

    if ([kind isEqual:UICollectionElementKindSectionHeader])
    {
        header = [self.collectionView dequeueReusableSupplementaryViewOfKind:kind
                                                    withReuseIdentifier:@"reuseHeader"
                                                           forIndexPath:indexPath];

        [header addSubview:searchBar];

    }
    return header;
}

1. Set the UIViewControllerBasedStatusBarAppearance to YES in the .plist file.

2. In the viewDidLoad do a [self setNeedsStatusBarAppearanceUpdate];

3. Add the following method:

   - (UIStatusBarStyle)preferredStatusBarStyle
   { 
       return UIStatusBarStyleLightContent; 
   }
   

Note: This does not work for controllers inside UINavigationController, please see Tyson's comment below :)

Swift 3 - This will work controllers inside UINavigationController. Add this code inside your controller.

// Preferred status bar style lightContent to use on dark background.
// Swift 3
override var preferredStatusBarStyle: UIStatusBarStyle {
    return .lightContent
}

Swift 5 and SwiftUI

For SwiftUI create a new swift file called HostingController.swift

import Foundation
import UIKit
import SwiftUI

class HostingController: UIHostingController<ContentView> {
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
}

Then change the following lines of code in the SceneDelegate.swift

window.rootViewController = UIHostingController(rootView: ContentView())

to

window.rootViewController = HostingController(rootView: ContentView())