I am having trouble playing a video within a swift playground using AVPlayer.
我在使用AVPlayer快速播放视频时遇到了麻烦。
Here's my code.
这是我的代码。
import UIKit
import AVFoundation
var f=CGRectMake(0, 0, 500, 500)
var url=NSURL(string: "http://s3.amazonaws.com/vids4project/sample.mp4")
var playerItem = AVPlayerItem(URL: url)
var v = UIView(frame:f)
var player=AVPlayer(playerItem: playerItem)
var playerLayer=AVPlayerLayer(player: player)
playerLayer.frame=f
v.layer.addSublayer(playerLayer)
player.play()
Any suggestions? The code as does nothing at all. My expectation is the 'v' variable should be showing the video. It seems to work outside the playground when I am connecting the avplayerlayer to a view from a storyboard.
有什么建议吗?代码什么都不做。我的期望是v变量应该显示视频。当我将avplayerlayer连接到故事板上的视图时,它似乎在操场外工作。
3 个解决方案
#1
7
The following should work if you drop it into a playground. Make sure to swap out the path: (Xcode7 GM)
如果你把它扔到操场上,下面的方法应该是有效的。确保切换路径:(Xcode7 GM)
import UIKit
import AVFoundation
import XCPlayground
var f = CGRectMake(0, 0, 500, 500)
let path = NSBundle.mainBundle().pathForResource("movie", ofType: "m4v")!
let url = NSURL(fileURLWithPath: path)
var playerItem = AVPlayerItem(URL: url)
var v = UIView(frame: f)
v.backgroundColor = UIColor.blackColor()
var player = AVPlayer(playerItem: playerItem)
var playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = f
v.layer.addSublayer(playerLayer)
player.play()
XCPShowView("View", view: v)
XCPSetExecutionShouldContinueIndefinitely(true)
#2
6
Try adding this at the end to keep the playground running
试着在最后添加这个来保持操场的运转
import XCPlayground
XCPSetExecutionShouldContinueIndefinitely(continueIndefinitely: true)
#3
0
Thanks of @Justin Levi Winter's answer and I had updated the code for Swift3, tested with Xcode 8 (This video plays in timeline, but not on the Quick Look):
感谢@Justin Levi Winter的回答,我已经更新了Swift3的代码,用Xcode 8进行了测试(这个视频在时间轴上播放,但不是快速浏览):
import AVFoundation
import PlaygroundSupport
URLCache.shared = URLCache(memoryCapacity: 0, diskCapacity: 0, diskPath: nil)
let width = 568
let height = 320
let container = UIView(frame: CGRect(x: 0, y: 0, width: width, height: height))
PlaygroundPage.current.liveView = container
PlaygroundPage.current.needsIndefiniteExecution = true
func playVideo(_ url: URL){
let f=CGRect(x: 0, y: 0, width: width, height: height)
let playerItem = AVPlayerItem(url: url)
let player=AVPlayer(playerItem: playerItem)
let playerLayer=AVPlayerLayer(player: player)
playerLayer.frame=f
container.layer.addSublayer(playerLayer)
PlaygroundPage.current.liveView = container
player.play()
}
playVideo(URL(string:"http://s3.amazonaws.com/vids4project/sample.mp4")!)
#1
7
The following should work if you drop it into a playground. Make sure to swap out the path: (Xcode7 GM)
如果你把它扔到操场上,下面的方法应该是有效的。确保切换路径:(Xcode7 GM)
import UIKit
import AVFoundation
import XCPlayground
var f = CGRectMake(0, 0, 500, 500)
let path = NSBundle.mainBundle().pathForResource("movie", ofType: "m4v")!
let url = NSURL(fileURLWithPath: path)
var playerItem = AVPlayerItem(URL: url)
var v = UIView(frame: f)
v.backgroundColor = UIColor.blackColor()
var player = AVPlayer(playerItem: playerItem)
var playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = f
v.layer.addSublayer(playerLayer)
player.play()
XCPShowView("View", view: v)
XCPSetExecutionShouldContinueIndefinitely(true)
#2
6
Try adding this at the end to keep the playground running
试着在最后添加这个来保持操场的运转
import XCPlayground
XCPSetExecutionShouldContinueIndefinitely(continueIndefinitely: true)
#3
0
Thanks of @Justin Levi Winter's answer and I had updated the code for Swift3, tested with Xcode 8 (This video plays in timeline, but not on the Quick Look):
感谢@Justin Levi Winter的回答,我已经更新了Swift3的代码,用Xcode 8进行了测试(这个视频在时间轴上播放,但不是快速浏览):
import AVFoundation
import PlaygroundSupport
URLCache.shared = URLCache(memoryCapacity: 0, diskCapacity: 0, diskPath: nil)
let width = 568
let height = 320
let container = UIView(frame: CGRect(x: 0, y: 0, width: width, height: height))
PlaygroundPage.current.liveView = container
PlaygroundPage.current.needsIndefiniteExecution = true
func playVideo(_ url: URL){
let f=CGRect(x: 0, y: 0, width: width, height: height)
let playerItem = AVPlayerItem(url: url)
let player=AVPlayer(playerItem: playerItem)
let playerLayer=AVPlayerLayer(player: player)
playerLayer.frame=f
container.layer.addSublayer(playerLayer)
PlaygroundPage.current.liveView = container
player.play()
}
playVideo(URL(string:"http://s3.amazonaws.com/vids4project/sample.mp4")!)