uisearchbar - 如何用UIsearchController方法替换SearchDisplayController(在iOS 8中已弃用)

我显然还是Xcode的新手。所以SeacrhDisplayController在iOS 8中已弃用，我不知道如何在tableview上实现UIsearchController。

我已经用谷歌搜索了，但是我没有看到任何特别的或清晰的教程。

这是我的SearchDisplayController的代码:

-(BOOL)searchDisplayController:(UISearchDisplayController *)controller
    shouldReloadTableForSearchString:(NSString *)searchString
    {
        [self filterContentForSearchText:searchString
                                   scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                          objectAtIndex:[self.searchDisplayController.searchBar
                                                         selectedScopeButtonIndex]]];

        return YES;
    }


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if (tableView == self.searchDisplayController.searchResultsTableView) {
        return [searchResults count];

    } else {
        return [categories count];
    }
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"FirstTableCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
    }
    if (tableView == self.searchDisplayController.searchResultsTableView) {
        cell.textLabel.text = [searchResults objectAtIndex:indexPath.row];
    } else  {
        cell.textLabel.text = [categories objectAtIndex:indexPath.row];

    }

        cell.imageView.image = [UIImage imageNamed:[thumbnails objectAtIndex:indexPath.row]];


    return cell;
}



- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (tableView == self.searchDisplayController.searchResultsTableView) {
        [self performSegueWithIdentifier: @"showArrayDetail" sender: self];
    }
}


- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ([segue.identifier isEqualToString:@"showArrayDetail"]) {
        SecondViewController *destViewController = segue.destinationViewController;

        NSIndexPath *indexPath = nil;

        if ([self.searchDisplayController isActive]) {
            indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow];
            destViewController.categoryName = [searchResults objectAtIndex:indexPath.row];

        } else {
            indexPath = [self.tableView1 indexPathForSelectedRow];
            destViewController.categoryName = [categories objectAtIndex:indexPath.row];

        }
    }

}

最佳答案

我也有同样的问题，请按照以下步骤操作:

步骤1:
在您的.h文件中添加UISearchResultsUpdating
步骤2:
创建UISearchController的属性

@property(nonatomic, strong) IBOutlet UISearchController *searchController

步骤3:
将代码添加到viewDidLoad()

- (void)viewDidLoad
{
     NSLog(@"viewDidLoad Starts");
     [super viewDidLoad];
     self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
     self.searchController.searchResultsUpdater = self;
     self.searchController.dimsBackgroundDuringPresentation = false;
     self.tableView.tableHeaderView = self.searchController.searchBar;
}

步骤4:
在updateSearchResultsForSearchController中隐含您的过滤器内容

- (void)updateSearchResultsForSearchController:(UISearchController *)searchController {
     // do your Filter code and reload tableView
     [self.tableView reloadData];
}

步骤5:在numberOfRowsInSection上更改您的条件

if (self.searchController.isActive) {
        return [searchResults count];

    } else {
        return [categories count];
    }

步骤6:现在只需run and check

关于uisearchbar - 如何用UIsearchController方法替换SearchDisplayController(在iOS 8中已弃用)，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/27554280/