如何使用XCDYouTubeKit for Swift在播放列表中播放下一个youtube视频? [英] How to play the next youtube video in a playlist using XCDYouTubeKit for Swift?
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问题描述
我正在使用XCDYouTubeKit，它是MPMoviePlayerViewController的子类.
I'm using XCDYouTubeKit, written as a subclass of MPMoviePlayerViewController.
播放播放列表中的下一个视频时遇到问题.当我点击前进按钮时，播放器的状态会停止，并且不确定如何恢复播放器吗?
I'm having an issue playing the next video in my playlist. When I tap the forward button, the state of the player is stopped, and I'm not sure how to resume it?
这是我的代码:
override func viewDidLoad()
{
super.viewDidLoad()
youtubeVideoPlayer = XCDYouTubeVideoPlayerViewController(videoIdentifier: videoID)
self.view.addSubview( (youtubeVideoPlayer?.view)! )
NSNotificationCenter.defaultCenter().addObserver(
self,
selector: "moviePlayerNowPlayingMovieDidChange:",
name: MPMoviePlayerNowPlayingMovieDidChangeNotification,
object: youtubeVideoPlayer?.moviePlayer)
NSNotificationCenter.defaultCenter().addObserver(
self,
selector: "moviePlayerLoadStateDidChange:",
name: MPMoviePlayerLoadStateDidChangeNotification,
object: youtubeVideoPlayer?.moviePlayer)
NSNotificationCenter.defaultCenter().addObserver(
self,
selector: "moviePlayerPlaybackDidChange:",
name: MPMoviePlayerPlaybackStateDidChangeNotification,
object: youtubeVideoPlayer?.moviePlayer)
NSNotificationCenter.defaultCenter().addObserver(
self,
selector: "moviePlayerPlayBackDidFinish:",
name: MPMoviePlayerPlaybackDidFinishNotification,
object: youtubeVideoPlayer?.moviePlayer)
}
func moviePlayerPlayBackDidFinish(notification: NSNotification)
{
print("moviePlayerPlayBackDidFinish")
youtubeVideoPlayer!.view.removeFromSuperview()
self.dismissViewControllerAnimated(true, completion: nil);
}
func moviePlayerNowPlayingMovieDidChange(notification: NSNotification)
{
print("moviePlayerNowPlayingMovieDidChange")
}
func moviePlayerLoadStateDidChange(notification: NSNotification)
{
print("moviePlayerLoadStateDidChange")
youtubeVideoPlayer?.moviePlayer.play()
let state: MPMoviePlaybackState = (youtubeVideoPlayer?.moviePlayer.playbackState)!
switch state
{
case MPMoviePlaybackState.Stopped:
print("stopped")
break
case MPMoviePlaybackState.Interrupted:
print("interrupted")
break
case MPMoviePlaybackState.SeekingForward:
print("forward")
break
case MPMoviePlaybackState.SeekingBackward:
print("backward")
break
case MPMoviePlaybackState.Paused:
print("paused")
break
case MPMoviePlaybackState.Playing:
print("playing")
break
}
}
func moviePlayerPlaybackDidChange(notification: NSNotification)
{
print("moviePlayerPlaybackDidChange")
let state: MPMoviePlaybackState = (youtubeVideoPlayer?.moviePlayer.playbackState)!
switch state
{
case MPMoviePlaybackState.Stopped:
print("stopped")
videoIDIndex = videoIDIndex + 1
playNextVideo()
break
case MPMoviePlaybackState.Interrupted:
print("interrupted")
break
case MPMoviePlaybackState.SeekingForward:
print("forward")
break
case MPMoviePlaybackState.SeekingBackward:
print("backward")
break
case MPMoviePlaybackState.Paused:
print("paused")
break
case MPMoviePlaybackState.Playing:
print("playing")
break
}
}
func playNextVideo()
{
if segueIdentifer == "SegueFromPlaylistVideos"
{
print("Playlist")
NSNotificationCenter.defaultCenter().removeObserver(
self,
name: MPMoviePlayerPlaybackDidFinishNotification,
object: youtubeVideoPlayer?.moviePlayer
)
print("videoIDs_ARRAY = \(videoIDs_ARRAY)")
print("videoIDs_ARRAY[videoIDIndex] = \( (videoIDs_ARRAY[videoIDIndex] as String) )")
youtubeVideoPlayer?.videoIdentifier = videoIDs_ARRAY[videoIDIndex] as String
}
}
在播放列表中播放第一个视频时的顺序如下，我点击前进以移至下一个视频:
The sequence are as follows when the first video is played in the playlist, and I tap the forward to move to the next video:
moviePlayerNowPlayingMovieDidChange
moviePlayerNowPlayingMovieDidChange
moviePlayerLoadStateDidChange
moviePlayerLoadStateDidChange
moviePlayerPlaybackDidChange
moviePlayerPlaybackDidChange
玩
玩
moviePlayerLoadStateDidChange
moviePlayerLoadStateDidChange
播放
moviePlayerPlaybackDidChange
moviePlayerPlaybackDidChange
已停止
播放列表
videoIDs_ARRAY = ["NztC0z1JNq0"，"uqRBijuCZd8"]
videoIDs_ARRAY = ["NztC0z1JNq0", "uqRBijuCZd8"]
videoIDs_ARRAY [videoIDIndex] = uqRBijuCZd8
videoIDs_ARRAY[videoIDIndex] = uqRBijuCZd8
moviePlayerLoadStateDidChange
moviePlayerLoadStateDidChange
已停止
最后您可以看到，播放器的状态为已停止.
As you can see at the end, the state of the player is stopped.
我不确定如何继续播放它，因此它将播放下一个视频.我试图在moviePlayerLoadStateDidChange中添加youtubeVideoPlayer?.moviePlayer.play()，但是播放器无法继续播放.
I'm not sure how to resume it so it will play the next video. I've tried to add youtubeVideoPlayer?.moviePlayer.play() within moviePlayerLoadStateDidChange but the player does not resume playing.
对此有何想法?
谢谢
推荐答案
I don't know syntax in Swift so please translate objective-c to swift
I have 2 solutions for you problem :-
1. You can stop current playing video syntax in objective-c like
[self.youtubeVideoPlayer.moviePlayer stop];
and then you can set new video
self.youtubeVideoPlayer.videoIdentifier=videoIdentifier;
self.youtubeVideoPlayer.moviePlayer.shouldAutoplay=TRUE;
[self.youtubeVideoPlayer presentInView:self.playerView];
[self.youtubeVideoPlayer.moviePlayer prepareToPlay];
self.youtubeVideoPlayer.moviePlayer.shouldAutoplay=TRUE;
2. You can do like this
set nil to your XCDYouTubeVideoPlayerViewController reference and set it again
self.youtubeVideoPlayer = nil;
self.youtubeVideoPlayer = [[XCDYouTubeVideoPlayerViewController alloc] init];
self.youtubeVideoPlayer.moviePlayer.shouldAutoplay=TRUE;
self.youtubeVideoPlayer.moviePlayer.controlStyle= MPMovieControlStyleNone;
self.youtubeVideoPlayer.moviePlayer.scalingMode = MPMovieScalingModeFill;
and then you can set new video
self.youtubeVideoPlayer.videoIdentifier=videoIdentifier;
self.youtubeVideoPlayer.moviePlayer.shouldAutoplay=TRUE;
[self.youtubeVideoPlayer presentInView:self.playerView];
[self.youtubeVideoPlayer.moviePlayer prepareToPlay];
self.youtubeVideoPlayer.moviePlayer.shouldAutoplay=TRUE;
Example: -
#import "ViewController.h"
#import "XCDYouTubeVideoPlayerViewController.h"
@interface ViewController ()
{
NSArray *urlArray;
int arrindex;
}
@property (weak, nonatomic) IBOutlet UIView *playerView;
@property (nonatomic, strong) XCDYouTubeVideoPlayerViewController *videoPlayerViewController;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
urlArray = [[NSArray alloc] initWithObjects:@"zVyEPNIR-yk",@"r5RXlY3at-E",@"sUFKakydp2c",@"1xvLHxFUwIk", nil];
arrindex = 0;
NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
[defaultCenter addObserver:self selector:@selector(moviePlayerPlaybackStateDidChange1:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil];
[defaultCenter addObserver:self selector:@selector(moviePlayerLoadStateDidChange1:) name:MPMoviePlayerLoadStateDidChangeNotification object:nil];
[self setVideo];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)setVideo
{
self.videoPlayerViewController = [[XCDYouTubeVideoPlayerViewController alloc] init];
self.videoPlayerViewController.moviePlayer.shouldAutoplay=TRUE;
self.videoPlayerViewController.moviePlayer.controlStyle= MPMovieControlStyleNone;
self.videoPlayerViewController.moviePlayer.scalingMode = MPMovieScalingModeFill;
[self.playerView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
NSString *videoIdentifier =[urlArray objectAtIndex:arrindex];
self.videoPlayerViewController.videoIdentifier=videoIdentifier;
self.videoPlayerViewController.moviePlayer.shouldAutoplay=TRUE;
[self.videoPlayerViewController presentInView:self.playerView];
[self.videoPlayerViewController.moviePlayer prepareToPlay];
self.videoPlayerViewController.moviePlayer.shouldAutoplay=TRUE;
}
- (IBAction)Next:(id)sender {
arrindex++;
if (arrindex<urlArray.count) {
self.videoPlayerViewController=nil;
[self setVideo];
}
}
- (void) moviePlayerLoadStateDidChange1:(NSNotification *)notification
{
MPMoviePlayerController *moviePlayerController = notification.object;
MPMovieLoadState state = moviePlayerController.loadState;
if (state & MPMovieLoadStatePlayable)
{
[self.videoPlayerViewController.moviePlayer play];
}
else if (state & MPMovieLoadStatePlaythroughOK)
{
}
else if (state & MPMovieLoadStateStalled)
{
}
}
- (void) moviePlayerPlaybackStateDidChange1:(NSNotification *)notification
{
long reason=(long)self.videoPlayerViewController.moviePlayer.playbackState;
if (reason==0)
{
NSLog(@"I'm Not Playing");
}
else if (reason==1)
{
NSLog(@"I'm Playingggggggggggggggg");
}
else if (reason ==2)
{
NSLog(@"pause....................................");
}
else if (reason ==3)
{
//NSLog(@"Interrupteddddddddddddddddd");
}
else if (reason ==4)
{
//NSLog(@"Seeking Forward");
}
else if (reason ==5)
{
//NSLog(@"Seeking Backward");
}
}
@end
I hope this helps you.
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