每当我轻按播放按钮时,我的tableview
自定义单元上就会有一个播放按钮。我希望所选的按钮图像更改为暂停图像。
问题是所有其他按钮的图像正在更新。
因此,所有图像都将变为暂停图像,而不是所选按钮。
我试图点击按钮的indexpath
并仅重新加载该行,但这似乎没有什么不同。
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let playerCell = tableView.dequeueReusableCell(withIdentifier: "playerCell", for: indexPath) as! PlayerCell
let item = subcategory?.items?[indexPath.row]
// Tap gestures extension for cell button action
playerCell.playPause.addTapGestureRecognizer {
AudioController.shared.setupPlayer(item: item)
if let selectedCell = tableView.cellForRow(at: indexPath) as? PlayerCell {
selectedCell.playPause.setImage(#imageLiteral(resourceName: "pause"), for: .normal)
tableView.reloadRows(at: [IndexPath(row: indexPath.row, section: 1)], with: .none)
}
print("index \(indexPath)")
}
答案 0 :(得分:1)
您可以做的是在按钮上添加标签。因此,在创建单元格override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
的方法中,您将一个标记添加到该单元格中代表indexPath的按钮。然后从分配按钮的选择器中,获取要更改的单元格。
例如:
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "yourCell", for: indexPath)
cell.button.tag = indePath.row
cell.button.addTarget(self, action: #selector(yourSelector(_sender:)), for: .touchUpInside)
}
func yourSelector(_sender: UIButton){
let cell = tableView.cellForRow(at: IndexPath(row: sender.tag, section: 0)) as! YourCellType
// Change the image, play/pause audio for that cell
}
答案 1 :(得分:0)
点击单元格中的按钮时,不会触发tableView(_:didSelectRowAt:)
,因此建议您使用delegate
来检测按钮的动作。
您需要继续跟踪单元格按钮状态的变化。
PlayCell.swift
protocol PlayCellDelegate: class {
func playCellPlayButtonDidPress(at indexPath: IndexPath)
}
class PlayerCell: UITableViewCell {
let playButton: UIButton = {
let button = UIButton()
button.addTarget(self, action: #selector(playButtonPressed(_:)), for: .touchUpInside)
return button
}()
weak var delegate: PlayCellDelegate?
var item: MyItem? {
didSet {
if item?.status == .paused {
// set pause image for playButton here
} else if item?.status == .playing {
// set play image for playButton here
}
}
}
var indexPath: IndexPath?
@objc func playButtonPressed(_ sender: UIButton) {
guard let indexPath = self.indexPath else { return }
delegate?.playCellPlayButtonDidPress(at: indexPath)
}
}
Model.swift
struct Subcategory {
// ...
var items: [MyItem]?
}
struct MyItem {
// ...
var status: Status.stop
enum Status {
case playing, paused, stopped // etc..
}
}
TableViewController.swift
class TableViewController: UITableViewController, PlayCellDelegate {
private var subcategory: Subcategory?
private let cellId = "Cell"
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as? PlayerCell {
cell.delegate = self
cell.item = subcategory?.items?[indexPath.row]
cell.indexPath = indexPath
return cell
}
return UITableViewCell()
}
func playCellPlayButtonDidPress(at indexPath: IndexPath) {
// you only need to change model here, and reloadRows will update the cell.
if subcategory?.items?[indexPath.row].status == .play {
subcategory?.items?[indexPath.row].status = .pause
} // other logic..
tableView.reloadRows(at: [indexPath], with: .none)
}
}
希望有帮助!