Question

我在使用AVPlayer在快速游乐场内播放视频时遇到问题。

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()

有什么建议吗？代码完全没有任何作用。我的期望是＆＃39; v＆＃39;变量应该显示视频。当我将avplayerlayer连接到故事板的视图时，它似乎在操场外工作。

Answer 1

如果将它放入游乐场，以下情况应该有效。确保换出路径：（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)

Answer 2

尝试在最后添加此项以保持游乐场运行

import XCPlayground
XCPSetExecutionShouldContinueIndefinitely(continueIndefinitely: true)

Answer 3

感谢@Justin Levi Winter的回答，我更新了Swift3的代码，使用Xcode 8测试（此视频在时间轴中播放，但不在快速浏览中播放）：

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")!)

Answer 4

对于Swift 5。*

在阅读了包括上述答案的几个答案之后，我编写了以下代码。它可以工作，但问题播放器视图的放置有点偏离。我的意思是当它的框架的x和y值应该在左上角，但它不坐在那里。主要问题是如何实际编写url。

mounted()

在Swift Playground中使用AVPlayer播放视频？

4 个答案: