激活UISearchBar

Question

我试图加载一个视图，就好像用户已经按下了UISearchBar。我希望在顶部加载带有取消按钮的UISearchBar的SearchController。

我试过了：

func activateSearch(){
        self.searchBarShouldBeginEditing(self.searchController.searchBar)
        self.willPresentSearchController(self.searchController)
        self.updateSearchResultsForSearchController(self.searchController)
}

Answer 1

func activateSearch() {
    self.searchController.isActive = true 
    self.searchController.searchBar.isHidden = false
    self.searchController.searchBar.becomeFirstResponder()
 }

Answer 2

只需在viewDidAppear中将searchController设置为active即可完成此操作

override func viewDidAppear(animated: Bool) {
        searchController.active = true
    }

并添加以下内容

func didPresentSearchController(_ searchController: UISearchController) {
    DispatchQueue.main.async {
        searchController.searchBar.becomeFirstResponder()
    }
}