【发布时间】：2017-07-07 00:43:04
【问题描述】：
为什么会出现此错误？我需要做什么？
* -[UITableView _endCellAnimationsWithContext:] 中的断言失败，/BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit/UIKit-3600.8.1/UITableView.m:1442 2017-07-06 20:25:30.736267-0400 BlogApp[1482:340583] * 由于未捕获的异常“NSInternalInconsistencyException”而终止应用程序，原因：“尝试从之前仅包含 0 行的第 0 节中删除第 0 行更新”
崩溃在这里
// ----- Inserting Cell to followedArray -----
let blogObject: Blog = filteredArray[indexPath.section][indexPath.row]
let indexOfObjectInArray = mainArray.index(of: blogObject)
followedArray.insert(blogObject, at: 0)
// ----- Removing Cell from filteredArray -----
filteredArray.remove(at: [indexPath.section][indexPath.row])
mainArray.remove(at: indexOfObjectInArray!)
let rowToRemove = indexPath.row
self.myTableView.deleteRows(at: [IndexPath(row: rowToRemove, section: 0)], with: .fade)
self.myTableView.endUpdates()
我从未使用过数组数组var filteredArray = [[Blog]]()，所以也许我只是没有正确访问或删除它。
我刚刚发布了有关解决我遇到的 SearchBar 问题的帖子，但在我尝试它时，我遇到了这个崩溃。当我在搜索对象时单击关注按钮时会发生这种情况。这超出了我的理解，因为我是 SearchBar 代码的新手。
从filteredArray中删除单元格时出现问题，可能没有正确访问它所以无法删除它？我已经逐行设置了断点，当从filteredArray中删除单元格时它崩溃了
另外，我在使用 SearchBar 时遇到了一个一般性问题并获得了新代码，所以也许这可以提供帮助。
Swift: Have SearchBar search through both sections and not combine them
如有其他信息，请告诉我，谢谢。
// Follow Button
@IBAction func followButtonClick(_ sender: UIButton!) {
// Adding row to tag
let buttonPosition = (sender as AnyObject).convert(CGPoint.zero, to: self.myTableView)
if let indexPath = self.myTableView.indexPathForRow(at: buttonPosition) {
// Change Follow to Following
(sender as UIButton).setImage(UIImage(named: "follow.png")!, for: .normal)
cell.followButton.isHidden = true
cell.followedButton.isHidden = false
// Checking wether to import from mainArray or filteredArray to followedArray
if !(searchController.isActive && searchController.searchBar.text != "") {
self.myTableView.beginUpdates()
// Save identifier into followedIdentifier array
self.followedIdentifiers.insert(mainArray[indexPath.row].blogID)
// ----- Inserting Cell to followedArray -----
followedArray.insert(mainArray[indexPath.row], at: 0)
myTableView.insertRows(at: [IndexPath(row: 0, section: 0)], with: .fade)
// ----- Removing Cell from mainArray -----
mainArray.remove(at: indexPath.row)
let rowToRemove = indexPath.row
self.myTableView.deleteRows(at: [IndexPath(row: rowToRemove, section: 1)], with: .fade)
self.myTableView.endUpdates()
// After Updating Table, Save the Archived Data to File Manager
saveData()
}
else { // **** Crash in this section ****
self.myTableView.beginUpdates()
// Remove identifier into followedIdentifier array
self.followedIdentifiers.remove(followedArray[indexPath.row].blogID)
// ----- Inserting Cell to followedArray -----
let blogObject: Blog = filteredArray[indexPath.section][indexPath.row]
let indexOfObjectInArray = mainArray.index(of: blogObject)
followedArray.insert(blogObject, at: 0)
//------------------------
// CRASH SHOULD BE HERE (breakpoints lead me here)
//------------------------
// ----- Removing Cell from filteredArray -----
filteredArray.remove(at: [indexPath.section][indexPath.row])
mainArray.remove(at: indexOfObjectInArray!)
let rowToRemove = indexPath.row
self.myTableView.deleteRows(at: [IndexPath(row: rowToRemove, section: 0)], with: .fade)
self.myTableView.endUpdates()
// After Updating Table, Save the Archived Data to File Manager
saveData()
}
}
}
我的其余代码，可能有助于解决问题
var mainArray = [Blog]()
var followedArray = [Blog]()
var filteredArray = [[Blog]]()
// Number of Rows in Section
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if !(searchController.isActive && searchController.searchBar.text != "") {
if section == 0 {
return followedArray.count
} else {
return mainArray.count
}
} else {
return filteredArray[section].count
}
}
// CellForRowAt indexPath
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let CellIdentifier = "Cell"
var cell = tableView.dequeueReusableCell(withIdentifier: CellIdentifier) as! CustomCell
if cell != cell {
cell = CustomCell(style: UITableViewCellStyle.default, reuseIdentifier: CellIdentifier)
}
// Configuring the cell
var blogObject: Blog
if !(searchController.isActive && searchController.searchBar.text != "") {
if indexPath.section == 0 {
blogObject = followedArray[indexPath.row]
cell.populateCell(blogObject, isFollowed: true, indexPath: indexPath, parentView: self)
} else {
blogObject = mainArray[indexPath.row]
cell.populateCell(blogObject, isFollowed: false, indexPath: indexPath, parentView: self)
}
} else {
blogObject = filteredArray[indexPath.section][indexPath.row]
cell.populateCell(blogObject, isFollowed: false, indexPath: indexPath, parentView: self)
}
return cell
}
取消关注按钮代码
与关注按钮相反的问题应该在这里。
// Unfollow Button
@IBAction func followedButtonClick(_ sender: UIButton!) {
// Adding row to tag
let buttonPosition = (sender as AnyObject).convert(CGPoint.zero, to: self.myTableView)
if let indexPath = self.myTableView.indexPathForRow(at: buttonPosition) {
// Change Following to Follow
(sender as UIButton).setImage(UIImage(named: "followed.png")!, for: .normal)
cell.followButton.isHidden = false
cell.followedButton.isHidden = true
self.myTableView.beginUpdates()
// Remove identifier into followedIdentifier array
self.followedIdentifiers.remove(followedArray[indexPath.row].blogID)
// ----- Inserting Cell to mainArray -----
mainArray.insert(followedArray[indexPath.row], at: 0)
myTableView.insertRows(at: [IndexPath(row: 0, section: 1)], with: .fade)
// ----- Removing Cell from followedArray -----
followedArray.remove(at: indexPath.row)
let rowToRemove = indexPath.row
self.myTableView.deleteRows(at: [IndexPath(row: rowToRemove, section: 0)], with: .fade)
self.myTableView.endUpdates()
// After Updating Table, Save the Archived Data to File Manager
saveData()
}
}
【问题讨论】：
-
可能不相关，但在
insert/delete/move操作之后永远不会调用reloadData。insert/delete/move处理 UI 更新，您将丢失动画。 -
reloadData最好放在哪里？另外，我对这篇文章的措辞是否正确，希望人们能理解？ -
删除 all
reloadData()紧跟在insertRows/deleteRows/moveRows之后的行 -
再次 insert/delete/move 处理 UI 更新
-
是的，Apple 非常擅长这些东西：方法按照名称所说的方法执行。
deleteRows将删除行。因此，在您调用它之后，行将被删除。你已经说出了你需要说的一切；您已经告诉 table view 它需要做的一切。为什么还要多说？
标签： ios swift uitableview uisearchbar