平成３０年２月２７〜２８日（火曜日）

対策：searchDisplayController’ is deprecated: first deprecated in iOS 8.0

対策完了。
基本は、ui-searchcontroller-objcによる。

概要は以下。
①
.m
@property (nonatomic, strong) UISearchController *searchController;

②

MasterViewController.m
Delegate追加
@interface MasterViewController () 

③
viewDidLoadの最後（最初に置くと、error）
[self initializeSearchController];

④
updateSearchResultsForSearchControllerの設定
// フィルタ作業後tableViewをreload
filterContentForSearchText
[((UITableViewController *)self.searchController.searchResultsController).tableView reloadData];

⑤
prepareForSegue
if ( self.searchController.active ) {}による切り替え

⑥
サーチバー設定
[self.searchController.searchBar setSearchBarStyle:UISearchBarStyleMinimal];

⑦
iOS 11.0

    //add the UISearchController's search bar to the header of this table
    //self.tableView.tableHeaderView = self.searchController.searchBar;
    if ([self.navigationItem respondsToSelector:@selector(setSearchController:)]) {
        // For iOS 11 and later, we place the search bar in the navigation bar.
        if (@available(iOS 11.0, *)) {
            self.navigationController.navigationBar.prefersLargeTitles = NO;
        } else {
            // Fallback on earlier versions
        }
        if (@available(iOS 11.0, *)) {
            self.navigationItem.searchController = self.searchController;
        } else {
            // Fallback on earlier versions
        }
        // We want the search bar visible all the time.
        if (@available(iOS 11.0, *)) {
            // 今回はYES（好みか）
            self.navigationItem.hidesSearchBarWhenScrolling = YES;
        } else {
            // Fallback on earlier versions
        }
    }
    else {
        // For iOS 10 and earlier, we place the search bar in the table view's header.
        self.tableView.tableHeaderView = self.searchController.searchBar;
    }