3d Peek & Pop 搜索结果答案

【问题标题】：3d Peek & Pop for search results3d Peek & Pop 搜索结果
【发布时间】：2017-03-12 22:07:35
【问题描述】：

我使用搜索栏来过滤我的表格视图。我在显示可搜索内容的同一视图控制器中显示搜索结果。它工作正常。除了一件事 - 3d Peek and Pop 不适用于搜索结果。我确实尝试了 Storyboard segue 中的“Peek & Pop”复选框。我确实尝试在我的 TableViewController 中编程 peek & pop。结果是一样的：peek & pop 适用于表格视图单元格，但不适用于搜索结果单元格。

这里是搜索和 peek & pop 代码片段：

    // Add a search bar
    searchController = UISearchController(searchResultsController: nil)
    tableView.tableHeaderView = searchController.searchBar
    searchController.searchResultsUpdater = self
    searchController.hidesNavigationBarDuringPresentation = false
    searchController.dimsBackgroundDuringPresentation = false
    self.tableView.contentOffset = CGPoint(x: 0, y: searchController.searchBar.frame.height)

    // Register for preview
    if traitCollection.forceTouchCapability == .available {
        previewingContext = registerForPreviewing(with: self, sourceView: tableView)
    }


    func updateSearchResults(for searchController: UISearchController) {
        if let searchText = searchController.searchBar.text {
            filterContent(for: searchText)
            tableView.reloadData()
        }
    }

    // MARK: UIViewControllerPreviewingDelegate methods
    func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {        
        guard let tableView = previewingContext.sourceView as? UITableView,
            let indexPath = tableView.indexPathForRow(at: location),
            let cell = tableView.cellForRow(at: indexPath),
            let detailVC = storyboard?.instantiateViewController(withIdentifier: "AlarmViewController") as? AlarmViewController
        else { return nil }
        detailVC.alarm = alarms[indexPath.row]
        previewingContext.sourceRect = cell.frame       
        return detailVC
    }

    func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController) {
        show(viewControllerToCommit, sender: self)
    }

有人知道如何为搜索结果实现 peek & pop 吗？

我猜主要问题是如何注册预览 UISearchController？..

【问题讨论】：

Peek and Pop on UITableView cells fails with UISearchController的可能重复
@DaveWeston 感谢您的意见！我确实检查了你的建议，不幸的是它对我不起作用。可能是因为我在搜索结果中重用了相同的 Table View Controller。在您提到的主题中，搜索结果使用了一个单独的视图控制器。

标签： ios swift uisearchcontroller peek-pop

【解决方案1】：

我成功了。有几个“街区新手”的错误。正确代码：

// Add a search bar
searchController = UISearchController(searchResultsController: nil)
searchController.loadViewIfNeeded()
tableView.tableHeaderView = searchController.searchBar
searchController.searchResultsUpdater = self
searchController.delegate = self
searchController.hidesNavigationBarDuringPresentation = false
searchController.dimsBackgroundDuringPresentation = false
self.tableView.contentOffset = CGPoint(x: 0, y: searchController.searchBar.frame.height)
// Hide search bar on detailed view and preserve search results
    self.definesPresentationContext = true

// Register for preview
if traitCollection.forceTouchCapability == .available {
    previewingContext = registerForPreviewing(with: self, sourceView: tableView)
}

func updateSearchResults(for searchController: UISearchController) {
    if let searchText = searchController.searchBar.text {
        filterContent(for: searchText)
        tableView.reloadData()
    }
}

// MARK: UIViewControllerPreviewingDelegate methods
func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {        
    guard let tableView = previewingContext.sourceView as? UITableView,
        let indexPath = tableView.indexPathForRow(at: location),
        let cell = tableView.cellForRow(at: indexPath),
        let detailVC = storyboard?.instantiateViewController(withIdentifier: "AlarmViewController") as? AlarmViewController
    else { return nil }
    detailVC.alarm = (searchController.isActive) ? searchResults[(indexPath.row)] : alarms[indexPath.row]
    previewingContext.sourceRect = cell.frame       
    return detailVC
}

func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController) {
    show(viewControllerToCommit, sender: self)
}

简而言之： 1) 为 searchController 添加了委托 2) 如果 searchController.isActive 在 UIViewControllerPreviewingDelegate 中使用 searchResults

希望对某人有所帮助。

【讨论】：