加载 AVPlayer 时出现错误线程 1: EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
Getting error Thread 1: EXC_BAD_ACCESS (code=EXC_I386_GPFLT) when loading AVPlayer
当我 select 一个 collectionViewCell 时,我试图加载一个 AVPlayer,这是我在 didSelectItem
中的代码:
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if let item = items?[indexPath.item] {
showPlayer(item: item)
}
}
func showPlayer(item: Item) {
let playerLauncher = PlayerLauncher()
playerLauncher.showVideoPlayer()
let playerView = PlayerView()
playerView.item = item
playerView.setupPlayerView()
}
这是我的 PlayerLauncher 文件:
class PlayerView: UIView {
var item: Item? {
didSet {
if let id = item?.itemId {
itemId = id
}
}
}
var itemId = String()
override init(frame: CGRect) {
super.init(frame: frame)
backgroundColor = UIColor(white: 0.3, alpha: 1)
}
var player: AVPlayer?
func setupPlayerView() {
let baseurl = "http://xample.com/play.m3u?id="
let urlString = "\(baseurl)\(itemId)"
print(urlString)
if let url = URL(string: urlString) {
player = AVPlayer(url: url)
let playerLayer = AVPlayerLayer(player: player)
self.layer.addSublayer(playerLayer)
playerLayer.frame = self.frame
let audioSession = AVAudioSession.sharedInstance()
do{
try audioSession.setCategory(AVAudioSessionCategoryPlayback)
} catch let err {
print(err)
return
}
player?.play()
player?.addObserver(self, forKeyPath: "currentItem.status", options: .new, context: nil)
}
}
}
class PlayerLauncher: NSObject {
func showVideoPlayer() {
print("Showing the player...")
if let keyWindow = UIApplication.shared.keyWindow {
let view = UIView(frame: keyWindow.frame)
view.backgroundColor = UIColor.white
view.frame = CGRect(x: keyWindow.frame.width - 10, y: keyWindow.frame.height - 10, width: 10, height: 10)
let playerFrame = CGRect(x: 0, y: 0, width: keyWindow.frame.width, height: keyWindow.frame.height)
let playerView = PlayerView(frame: playerFrame)
view.addSubview(playerView)
keyWindow.addSubview(view)
UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
view.frame = keyWindow.frame
}, completion: { (completedAnimation) in
//later...
})
}
}
}
所以每当我 select 项目时,播放器开始加载,控制台打印 URL (因为我在那里添加了打印语句),这是它打印的内容:
http://xample.com/play.m3u?id=12345
(lldb)
然后它崩溃并在 AppDelegate 中显示 Thread 1: EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
错误。我该如何解决?
谢谢。
更新:
我稍微更改了 didSelectItem
函数。这是代码:
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if let item = items?[indexPath.item] {
showPlayer(item: item)
}
}
func showPlayer(item: Item) {
let playerLauncher = PlayerLauncher()
playerLauncher.showPlayer(item: item)
}
我将 PlayerView
中的 init
方法更改为:
var item: Item? {
didSet {
if let id = item?.itemId {
itemId = id
}
}
}
init(frame: CGRect, item: Item) {
super.init(frame: frame)
self.item = item
setupPlayerView()
setupContainerView()
backgroundColor = UIColor(white: 0.3, alpha: 1)
}
以及 PlayerLauncher
中所需的更改:
let playerView = PlayerView(frame: playerFrame, item: item)
view.addSubview(playerView)
我在 let playerView
行打断,我可以看到那里传递的项目 ID。但它没有传递给 PlayerView
class 中的 urlString。因此,ID 仍然是 " "
.
出现
class PlayerLauncher: NSObject
无法参考
let playerView = PlayerView()
尝试在函数范围之外定义它们,以便它们可以被函数更改并在函数外部引用。
我制作了一份指南,希望能说明您一直以来的误解。
我为没有使用 MARKDOWN 文本格式向其他读者道歉,但请将此视为我对原始 poster 的最大尝试。我们已经在之前的 post.
中进行了充分的讨论
那么,你如何解决这个问题?
估计没啥好直接给你代码的,请大家根据这个信息修改一下代码。
如果您有更多问题,我会尽力帮助您:)
当我 select 一个 collectionViewCell 时,我试图加载一个 AVPlayer,这是我在 didSelectItem
中的代码:
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if let item = items?[indexPath.item] {
showPlayer(item: item)
}
}
func showPlayer(item: Item) {
let playerLauncher = PlayerLauncher()
playerLauncher.showVideoPlayer()
let playerView = PlayerView()
playerView.item = item
playerView.setupPlayerView()
}
这是我的 PlayerLauncher 文件:
class PlayerView: UIView {
var item: Item? {
didSet {
if let id = item?.itemId {
itemId = id
}
}
}
var itemId = String()
override init(frame: CGRect) {
super.init(frame: frame)
backgroundColor = UIColor(white: 0.3, alpha: 1)
}
var player: AVPlayer?
func setupPlayerView() {
let baseurl = "http://xample.com/play.m3u?id="
let urlString = "\(baseurl)\(itemId)"
print(urlString)
if let url = URL(string: urlString) {
player = AVPlayer(url: url)
let playerLayer = AVPlayerLayer(player: player)
self.layer.addSublayer(playerLayer)
playerLayer.frame = self.frame
let audioSession = AVAudioSession.sharedInstance()
do{
try audioSession.setCategory(AVAudioSessionCategoryPlayback)
} catch let err {
print(err)
return
}
player?.play()
player?.addObserver(self, forKeyPath: "currentItem.status", options: .new, context: nil)
}
}
}
class PlayerLauncher: NSObject {
func showVideoPlayer() {
print("Showing the player...")
if let keyWindow = UIApplication.shared.keyWindow {
let view = UIView(frame: keyWindow.frame)
view.backgroundColor = UIColor.white
view.frame = CGRect(x: keyWindow.frame.width - 10, y: keyWindow.frame.height - 10, width: 10, height: 10)
let playerFrame = CGRect(x: 0, y: 0, width: keyWindow.frame.width, height: keyWindow.frame.height)
let playerView = PlayerView(frame: playerFrame)
view.addSubview(playerView)
keyWindow.addSubview(view)
UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
view.frame = keyWindow.frame
}, completion: { (completedAnimation) in
//later...
})
}
}
}
所以每当我 select 项目时,播放器开始加载,控制台打印 URL (因为我在那里添加了打印语句),这是它打印的内容:
http://xample.com/play.m3u?id=12345
(lldb)
然后它崩溃并在 AppDelegate 中显示 Thread 1: EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
错误。我该如何解决?
谢谢。
更新:
我稍微更改了 didSelectItem
函数。这是代码:
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if let item = items?[indexPath.item] {
showPlayer(item: item)
}
}
func showPlayer(item: Item) {
let playerLauncher = PlayerLauncher()
playerLauncher.showPlayer(item: item)
}
我将 PlayerView
中的 init
方法更改为:
var item: Item? {
didSet {
if let id = item?.itemId {
itemId = id
}
}
}
init(frame: CGRect, item: Item) {
super.init(frame: frame)
self.item = item
setupPlayerView()
setupContainerView()
backgroundColor = UIColor(white: 0.3, alpha: 1)
}
以及 PlayerLauncher
中所需的更改:
let playerView = PlayerView(frame: playerFrame, item: item)
view.addSubview(playerView)
我在 let playerView
行打断,我可以看到那里传递的项目 ID。但它没有传递给 PlayerView
class 中的 urlString。因此,ID 仍然是 " "
.
出现
class PlayerLauncher: NSObject
无法参考
let playerView = PlayerView()
尝试在函数范围之外定义它们,以便它们可以被函数更改并在函数外部引用。
我制作了一份指南,希望能说明您一直以来的误解。
我为没有使用 MARKDOWN 文本格式向其他读者道歉,但请将此视为我对原始 poster 的最大尝试。我们已经在之前的 post.
中进行了充分的讨论那么,你如何解决这个问题? 估计没啥好直接给你代码的,请大家根据这个信息修改一下代码。
如果您有更多问题,我会尽力帮助您:)