iOS SearchBar和SeachDisplayController错位

Question

我需要使用搜索栏，但我使用此代码：

self.searchBar = [UISearchBar new];
_searchBar.frame = CGRectMake(0, 0, 200, 44);
_searchBar.searchBarStyle = UISearchBarStyleMinimal;
_searchBar.placeholder = @"Search stores";
_searchBar.delegate = self;

self.searchController = [[UISearchDisplayController alloc] initWithSearchBar:_searchBar contentsController:self];
_searchController.searchResultsDataSource = self;
_searchController.searchResultsDelegate = self;
_searchController.delegate = self;

self.definesPresentationContext = YES;
self.edgesForExtendedLayout = UIRectEdgeNone;

结果就是这个......我丢失了汉堡菜单按钮，我无法改变搜索栏的宽度。我也有一个奇怪的差距，它看起来像我的导航栏一样大。如何取回汉堡菜单按钮并修复奇怪的差距？

Answer 1

将以下代码放入ViewDidLoad。它适用于iOS 7 +

 if(SYSTEM_VERSION_GREATER_THAN(@"6.1")) {
       self.edgesForExtendedLayout = UIRectEdgeNone;
  }

<强>被修改

 - (void)setActive:(BOOL)visible animated:(BOOL)animated
{
    [super setActive:visible animated:animated];

    [self.searchContentsController.navigationController setNavigationBarHidden: NO animated: NO];

    CGRect frame = self.searchResultsTableView.frame;
    frame.origin.y = CGRectGetHeight(self.searchContentsController.navigationController.navigationBar.frame);

    frame.size.height = CGRectGetHeight(frame) - CGRectGetMinY(frame);

    self.searchResultsTableView.frame = frame;

    frame = self.searchBar.frame;
    self.searchBar.frame = frame;

    [self.searchContentsController.view insertSubview:self.searchBar aboveSubview:self.searchResultsTableView];

}

再尝试实施此解决方案。

- (void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller {
    self.navigationController.navigationBar.translucent = YES;
}

- (void)searchDisplayControllerDidEndSearch:(UISearchDisplayController *)controller {
    self.navigationController.navigationBar.translucent = NO;
}

注意：在iOS 8中不推荐使用UISearchDisplayController。Apple Document

在iOS8中使用以下代码支持

searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
searchController.searchResultsUpdater = self;
searchController.dimsBackgroundDuringPresentation = NO;
searchController.hidesNavigationBarDuringPresentation = NO;
searchController.searchBar.frame = CGRectMake(self.searchController.searchBar.frame.origin.x, self.searchController.searchBar.frame.origin.y, self.searchController.searchBar.frame.size.width, 44.0);
self.tableView.tableHeaderView = self.searchController.searchBar;

您也可以下载the sample code from here。