playerItemDidReachEnd 移动到错误 ViewController
playerItemDidReachEnd moves to wrong ViewController
我的应用有一个起始页和一个带有播放视频按钮的第二页。视频播放完毕后,AVPlayer 将通过 playerItemDidReachEnd 关闭。但由于某种原因,当玩家被解雇时,它显示的是起始页而不是第二页。我怎样才能让它显示第二页?
#import "ViewController.h"
@import AVKit;
@import AVFoundation;
@interface ViewController ()
@property(nonatomic, readonly) AVPlayerItem *currentItem;
@end
@implementation ViewController
AVPlayerViewController *playerViewController;
- (void)viewDidLoad {
[super viewDidLoad];
playerViewController = [[AVPlayerViewController alloc] init];
}
-(void)playerItemDidReachEnd:(NSNotification *) notification {
//remove the player
[self dismissViewControllerAnimated:NO completion:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (IBAction)playVideo:(id)sender {
NSURL *url = [NSURL URLWithString:@"https://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"];
AVURLAsset *asset = [AVURLAsset assetWithURL: url];
AVPlayerItem *item = [AVPlayerItem playerItemWithAsset: asset];
AVPlayer * player = [[AVPlayer alloc] initWithPlayerItem: item];
playerViewController.player = player;
UIScreen *mainScreen = [UIScreen mainScreen];
CGRect viewRect = mainScreen.bounds;
playerViewController.view.frame = viewRect;
playerViewController.showsPlaybackControls = YES;
[self.view addSubview:playerViewController.view];
[player play];
/* When the player item has played to its end time we'll dismiss the controller */
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(playerItemDidReachEnd:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:playerViewController.player.currentItem];
}
@end
如果我正确理解你的代码,你的 "second page" 是 ViewController
。
您正在通过 [self.view addSubview:playerViewController.view];
添加 AVPlayerViewController
,因此您需要通过调用删除此视图
[playerViewController.view removeFromSuperview]
。
在 [self dismissViewControllerAnimated:NO completion:nil];
之后,您解散了整个 ViewController
,而不仅仅是 AVPlayerViewController
。
我的应用有一个起始页和一个带有播放视频按钮的第二页。视频播放完毕后,AVPlayer 将通过 playerItemDidReachEnd 关闭。但由于某种原因,当玩家被解雇时,它显示的是起始页而不是第二页。我怎样才能让它显示第二页?
#import "ViewController.h"
@import AVKit;
@import AVFoundation;
@interface ViewController ()
@property(nonatomic, readonly) AVPlayerItem *currentItem;
@end
@implementation ViewController
AVPlayerViewController *playerViewController;
- (void)viewDidLoad {
[super viewDidLoad];
playerViewController = [[AVPlayerViewController alloc] init];
}
-(void)playerItemDidReachEnd:(NSNotification *) notification {
//remove the player
[self dismissViewControllerAnimated:NO completion:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (IBAction)playVideo:(id)sender {
NSURL *url = [NSURL URLWithString:@"https://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"];
AVURLAsset *asset = [AVURLAsset assetWithURL: url];
AVPlayerItem *item = [AVPlayerItem playerItemWithAsset: asset];
AVPlayer * player = [[AVPlayer alloc] initWithPlayerItem: item];
playerViewController.player = player;
UIScreen *mainScreen = [UIScreen mainScreen];
CGRect viewRect = mainScreen.bounds;
playerViewController.view.frame = viewRect;
playerViewController.showsPlaybackControls = YES;
[self.view addSubview:playerViewController.view];
[player play];
/* When the player item has played to its end time we'll dismiss the controller */
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(playerItemDidReachEnd:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:playerViewController.player.currentItem];
}
@end
如果我正确理解你的代码,你的 "second page" 是 ViewController
。
您正在通过 [self.view addSubview:playerViewController.view];
添加 AVPlayerViewController
,因此您需要通过调用删除此视图
[playerViewController.view removeFromSuperview]
。
在 [self dismissViewControllerAnimated:NO completion:nil];
之后,您解散了整个 ViewController
,而不仅仅是 AVPlayerViewController
。