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我正在关注展开和折叠我的表格视图部分的教程this。由于这个演示是在swift 2.2中完成的，我已经根据swift 3.0进行了所有更改。我坚持在条件（currentSectionCells [行] [“isVisible”]）下面的函数，它给我错误为“类型'NSFastEnumerationIterator.Element'（又名'Any'没有下标成员）'”。制作表格视图部分展开swift
func getIndicesOfVisibleRows() {
visibleRowsPerSection.removeAll()
for currentSectionCells in cellDescriptors {
var visibleRows = [Int]()
for row in 0...((currentSectionCells as! [[String: AnyObject]]).count - 1) {
if currentSectionCells[row]["isVisible"] as! Bool == true {
visibleRows.append(row)
}
}
visibleRowsPerSection.append(visibleRows)
}
}
我试图型铸造它下面
func getIndicesOfVisibleRows() {
visibleRowsPerSection.removeAll()
for currentSectionCells in cellDescriptors {
var visibleRows = [Int]()
for row in 0...((((currentSectionCells) as? NSMutableArray)?.count)! - 1) {
let temp = [currentSectionCells][row] as? NSMutableDictionary
let temp2 = temp?["isVisible"] as! Bool
if temp2 == true {
visibleRows.append(row)
}
}
visibleRowsPerSection.append(visibleRows)
}
}
但是这给了我在运行时坠毁在此行“让TEMP2 =温度？[”可见性“作为！BOOL” 崩溃说“EXC_BAD_INSTRUCTION”和临时显示为零。
请帮帮忙。 TIA
表视图委托和数据源
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
if cellDescriptors != nil {
return cellDescriptors.count
}
else {
return 0
}
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return visibleRowsPerSection[section].count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let currentCellDescriptor = getCellDescriptorForIndexPath(indexPath: indexPath as NSIndexPath)
let cell = tableView.dequeueReusableCell(withIdentifier: currentCellDescriptor["cellIdentifier"] as! String, for: indexPath) as! CustomCell
if currentCellDescriptor["cellIdentifier"] as! String == "sectionCellIdentifier" {
if let primaryTitle = currentCellDescriptor["secondaryTitle"]
{
cell.sectionTitleLabel.text = primaryTitle as? String
}
}
else if currentCellDescriptor["cellIdentifier"] as! String == "shortAnswerCell" {
cell.questionTitle.text = currentCellDescriptor["primaryTitle"] as? String
cell.questionTextView.text = currentCellDescriptor["secondaryTitle"] as? String
cell.answerTextView.text = currentCellDescriptor["answerTitle"] as? String
}
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let indexOfTappedRow = visibleRowsPerSection[indexPath.section][indexPath.row]
let temp = cellDescriptors[indexPath.section] as? NSArray
let temp2 = temp?[indexOfTappedRow ] as? NSDictionary
let temp3 = temp2?["isExpandable"] as! Bool
if temp3 == true {
var shouldExpandAndShowSubRows = false
if temp3 == false {
// In this case the cell should expand.
shouldExpandAndShowSubRows = true
}
temp2?.setValue(shouldExpandAndShowSubRows, forKey: "isExpanded")
for i in (indexOfTappedRow + 1)...(indexOfTappedRow + (temp2?["additionalRows"] as! Int)) {
(temp![i] as AnyObject).setValue(shouldExpandAndShowSubRows, forKey: "isVisible")
}
}
getIndicesOfVisibleRows()
tblExpandable.reloadSections(NSIndexSet(index: indexPath.section) as IndexSet, with: UITableViewRowAnimation.fade)
}
非常感谢图莎尔奏效:)。我还有一个查询。我没有得到适当的部分。只显示第一个，甚至没有扩展。 – iDeveloper
@iDeveloper显示表格功能。 –
@i开发人员部分似乎橡木应该是可见的。 –