Question

更新到iOS11后，我的searchBar表现得非常奇怪。激活后，它会跳转到屏幕顶部。它像以前一样工作，但我当然希望它留在原地。我通过谷歌搜索这种行为尝试了很多解决方案，但没有任何帮助。有没有人有同样的问题？你做了什么来解决这个问题？

var searchController: UISearchController!


        override func viewDidLoad() {
            super.viewDidLoad()
            // Setup the Search Controller
            searchController = UISearchController(searchResultsController: nil)
            searchController.searchResultsUpdater = self
            searchController.dimsBackgroundDuringPresentation = false
            searchController.hidesNavigationBarDuringPresentation = false
            searchController.searchBar.preservesSuperviewLayoutMargins = true
            searchController.obscuresBackgroundDuringPresentation = false
            searchController.searchBar.sizeToFit()
            walkaboutTableView.tableHeaderView = searchController.searchBar
            searchController.searchBar.barTintColor = matildaLightBlue
            searchController.searchBar.clipsToBounds = true
            searchController.searchBar.layer.borderWidth = 2
            searchController.searchBar.layer.borderColor = UIColor.black.cgColor
    }

Answer 1

将搜索控制器实例添加到导航项而不是表头视图中有助于我解决项目中的类似问题。

if #available(iOS 11, *) {
   navigationItem.searchController = searchController
} else {
   tableView.tableHeaderView = searchController.searchBar
}

navigationItem.searchController

navigationItem.hidesSearchBarWhenScrolling

Answer 2

Ruslan Kolosovskyi的回答非常好。此外，如果您希望搜索栏更易于访问：

    if #available(iOS 11, *) {
       navigationItem.searchController = searchController

       navigationItem.hidesSearchBarWhenScrolling = false
    } else {
       tableView.tableHeaderView = searchController.searchBar
    }

更新到iOS11后，我的searchBar表现得很奇怪

2 个答案: