我有一个名为MainViewController的父视图控制器,以及一个名为FilterViewController的子视图控制器,它占用了主控制器屏幕的一部分。
在filterViewController中,我向表视图添加了一个UISearchController。但是当我点击搜索结果转到DetailViewController
时 Attempt to present <MyApp.DetailViewController: 0x7f97ae057780> on <MyApp.FilterViewController: 0x7f97abd62b40> which is already presenting <UISearchController: 0x7f97abd85270>
我在iPad iOS 8模拟器上使用它。 如果resultSearchController不活动,我可以单击该表,它会转到我提供的任何内容,但不知怎的,这个uisearchcontroller不允许我,这是一个解决方法是什么?
代码: MainViewController.swift
func addFilterViewController(){
filterViewController = self.storyboard?.instantiateViewControllerWithIdentifier("filterviewcontroller") as! FilterViewController
filterViewController.mainViewController = self
self.addChildViewController(filterViewController)
filterViewController.view.frame = CGRectMake(self.view.frame.width*2/3, 0, self.view.frame.width/3, self.view.frame.height)
self.view.addSubview(filterViewController.view)
filterViewController.didMoveToParentViewController(self)
}
FilterViewController.swift
func setUpSearchBar() {
resultSearchController = UISearchController(searchResultsController: nil)
resultSearchController.searchResultsUpdater = self
resultSearchController.dimsBackgroundDuringPresentation = false
let searchBar = self.resultSearchController.searchBar
searchBar.sizeToFit()
searchBar.backgroundImage = UIImage()
searchBar.barTintColor = UIColor.clearColor()
searchBar.backgroundColor = UIColor.lightBlue()
searchBar.placeholder = "Type to search"
filterTable.tableHeaderView = searchBar
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
if resultSearchController.active {
println("search table select")
let detailVC = self.storyboard?.instantiateViewControllerWithIdentifier("detailViewController") as! DetailViewController
detailVC.card = filteredCards[indexPath.row]
// this has same problem if I pass in the MainViewController and do mainViewController.presentViewController...
self.presentViewController(detailVC, animated: false, completion: nil)
} else {
// other code
}
filterTable.deselectRowAtIndexPath(indexPath, animated: true)
}
func updateSearchResultsForSearchController(searchController: UISearchController) {
self.filteredCards = self.unorderedCards.filter{
(card: Card) -> Bool in
let name = card.firstName + card.lastName
let stringMatch = tributeName.lowercaseString.rangeOfString(searchController.searchBar.text.lowercaseString)
return (stringMatch != nil)
}
filterTable.reloadData()
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if resultSearchController.active {
return filteredCards.count
} else {
return unOrderedCards.count
}}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("filtercell", forIndexPath: indexPath) as! FilterCell
cell.backgroundColor = UIColor.lightBlue()
if resultSearchController.active {
let card = filteredCards[indexPath.row]
cell.name.text = card.firstName
} else {
let card = unOrderedCards[indexPath.row]
cell.name.text = card.firstName
}
return cell
}
答案 0 :(得分:1)
如果问题是视图控制器还在呈现resultSearchController,为什么不让resultSearchController呈现新的vc?
resultSearchController.presentViewController(detailVC, animated: false, completion: nil)
然后,如果你需要从resultSearchController中删除,只需创建一个继承自UISearchController的新类。