swift - UITableViewCell 中的 AVPlayer 是黑色的,无法查看
问题描述
我浏览了每篇文章和文章,但还没有解决我的问题,我不知道为什么。我有一个表格视图,如果内容是图像,它将在 TableViewCell 中显示图像,否则将在其中显示视频。对于视频,我打印了链接,所以它在那里并且链接有效,但由于某种原因,在 TableViewCell 中视频没有播放,它只是黑色。
这是 TableViewCell 的代码:
import UIKit
import AVFoundation
class ViewImageCell: UITableViewCell {
var avQueuePlayer : AVQueuePlayer?
var avPlayerLayer : AVPlayerLayer?
let postContentView: UIView = {
let view = UIView()
return view
}()
let contentImageView: UIImageView = {
let imageView = UIImageView()
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.layer.masksToBounds = true
imageView.autoresizesSubviews = true
imageView.contentMode = .scaleAspectFit
imageView.image = UIImage(named: "ProfileIcon")
return imageView
}()
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: .default, reuseIdentifier: reuseIdentifier)
addSubview(postContentView)
addSubview(contentImageView)
postContentView.anchor(top: self.topAnchor, left: self.leftAnchor, bottom: self.bottomAnchor, right: self.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
contentImageView.anchor(top: self.topAnchor, left: self.leftAnchor, bottom: self.bottomAnchor, right: self.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func addPlayer(for url: URL) {
self.avQueuePlayer = AVQueuePlayer(url: url)
self.avPlayerLayer = AVPlayerLayer(player: self.avQueuePlayer!)
self.avPlayerLayer?.frame = self.postContentView.bounds
self.avPlayerLayer?.fillMode = .both
self.postContentView.layer.addSublayer(self.avPlayerLayer!)
self.avQueuePlayer?.play()
}
func bindData(content: NSDictionary) {
if content[kPICTURE] != nil {
let data = content[kPICTURE] as! String
let picData = NSData(base64Encoded: data, options: [])
if let image = UIImage(data: picData! as Data) {
contentImageView.image = image
} else {
print("There was an error loading the pic")
}
} else {
}
if content[kVIDEO] != nil {
contentImageView.isHidden = true
let videoData = content[kVIDEO] as! String
let url = NSURL(fileURLWithPath: videoData)
addPlayer(for: url as URL)
print("Here is a video")
} else {
//
}
}
}
下面是 TableView 的一段代码:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.section == 0 {
let cell = tableView.dequeueReusableCell(withIdentifier: imageCellID, for: indexPath) as! ViewImageCell
if singleContent != nil {
cell.bindData(content: singleContent)
} else {
print("Can't find singleContent")
}
return cell
}
return UITableViewCell()
}
如果您有任何问题并需要更多说明,请告诉我。非常感谢所有帮助。
编辑:这是我正在使用的视频路径类型的示例。我是从我的 Firebase 数据库中获取的,而不是我项目中的本地文件。
file:///private/var/mobile/Containers/Data/PluginKitPlugin/49C0EAA4-9825-4D06-8CFB-6136FF5BCC3C/tmp/trim.AA010490-81F0-43C8-AE8A-1029D5AF55E1.MOV
我也得到下面的错误代码。我查看并认为这意味着该文件不存在,但我仍然可以在其他视图中查看该文件,它在不同的视图中播放视频。
NSURLConnection 完成错误 - 代码 -1100
解决方案
如果您想在 webview 中播放视频 URL,请使用以下代码:(根据您的要求管理代码)
func bindData(content: NSDictionary)
{
if content[kPICTURE] != nil {
let data = content[kPICTURE] as! String
let picData = NSData(base64Encoded: data, options: [])
if let image = UIImage(data: picData! as Data) {
contentImageView.image = image
} else {
print("There was an error loading the pic")
}
} else {
}
if content[kVIDEO] != nil {
contentImageView.isHidden = true
let videoData = content[kVIDEO] as! String
//let url = NSURL(fileURLWithPath: videoData)
let storageRef = Storage.storage().reference(forURL: <YourFilePathURL>)
storageRef.getData(maxSize: INT64_MAX) { (data, error) in
if let error = error {
print("Error downloading image data: \(error)")
return
}
storageRef.getMetadata(completion: { (metadata, metadataErr) in
if let error = metadataErr {
print("Error downloading metadata: \(error)")
return
}
if (metadata?.contentType == "image/gif") {
print("It is Gif")
} else {
let downloadUrl = metadata?.downloadURL()
if downloadUrl != nil{
print(downloadUrl)
//You will get your Video Url Here
self.PlayVideoInWEbView(downloadUrl)
print("Here is a video")
}
}
})
}
} else {
//
}
}
func PlayVideoInWEbView(_ videoURL : String)
{
let myWebView:UIWebView = UIWebView(frame: CGRect(x: 20, y: 20, width: self.viewCell.frame.width, height: 200))
myWebView.delegate = self
let myURL = URL(string: videoURL)
let myURLRequest:URLRequest = URLRequest(url: myURL!)
myWebView.loadRequest(myURLRequest)
self.viewCell.addSubview(myWebView)
}
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