Barre de progression de la timeline pour AVPlayer
AVPlayer est entièrement personnalisable. Malheureusement, il existe des méthodes pratiques dans AVPlayer pour afficher la barre de progression de la ligne de temps.
AVPlayer *player = [AVPlayer playerWithURL:URL];
AVPlayerLayer *playerLayer = [[AVPlayerLayer playerLayerWithPlayer:avPlayer] retain];[self.view.layer addSubLayer:playerLayer];
J'ai une barre de progression qui indique comment la vidéo a été lue et combien elle est restée identique à celle de MPMoviePlayer.
Alors, comment obtenir la chronologie de la vidéo de AVPlayer et comment mettre à jour la barre de progression
Suggère moi.
Veuillez utiliser le code ci-dessous, extrait du code exemple "AVPlayerDemo" de Apple.
double interval = .1f;
CMTime playerDuration = [self playerItemDuration]; // return player duration.
if (CMTIME_IS_INVALID(playerDuration))
{
return;
}
double duration = CMTimeGetSeconds(playerDuration);
if (isfinite(duration))
{
CGFloat width = CGRectGetWidth([yourSlider bounds]);
interval = 0.5f * duration / width;
}
/* Update the scrubber during normal playback. */
timeObserver = [[player addPeriodicTimeObserverForInterval:CMTimeMakeWithSeconds(interval, NSEC_PER_SEC)
queue:NULL
usingBlock:
^(CMTime time)
{
[self syncScrubber];
}] retain];
- (CMTime)playerItemDuration
{
AVPlayerItem *thePlayerItem = [player currentItem];
if (thePlayerItem.status == AVPlayerItemStatusReadyToPlay)
{
return([playerItem duration]);
}
return(kCMTimeInvalid);
}
Et dans la méthode syncScrubber, mettez à jour la valeur UISlider ou UIProgressBar.
- (void)syncScrubber
{
CMTime playerDuration = [self playerItemDuration];
if (CMTIME_IS_INVALID(playerDuration))
{
yourSlider.minimumValue = 0.0;
return;
}
double duration = CMTimeGetSeconds(playerDuration);
if (isfinite(duration) && (duration > 0))
{
float minValue = [ yourSlider minimumValue];
float maxValue = [ yourSlider maximumValue];
double time = CMTimeGetSeconds([player currentTime]);
[yourSlider setValue:(maxValue - minValue) * time / duration + minValue];
}
}
Merci à iOSPawan pour le code! J'ai simplifié le code aux lignes nécessaires. Cela pourrait être plus clair pour comprendre le concept. En gros, je l’ai implémenté comme ça et ça marche bien.
Avant de commencer la vidéo:
__weak NSObject *weakSelf = self;
[_player addPeriodicTimeObserverForInterval:CMTimeMakeWithSeconds(1.0 / 60.0, NSEC_PER_SEC)
queue:NULL
usingBlock:^(CMTime time){
[weakSelf updateProgressBar];
}];
[_player play];
Ensuite, vous devez avoir une méthode pour mettre à jour votre barre de progression:
- (void)updateProgressBar
{
double duration = CMTimeGetSeconds(_playerItem.duration);
double time = CMTimeGetSeconds(_player.currentTime);
_progressView.progress = (CGFloat) (time / duration);
}
let progressView = UIProgressView(progressViewStyle: UIProgressViewStyle.Bar)
self.view.addSubview(progressView)
progressView.constrainHeight("\(1.0/UIScreen.mainScreen().scale)")
progressView.alignLeading("", trailing: "", toView: self.view)
progressView.alignBottomEdgeWithView(self.view, predicate: "")
player.addPeriodicTimeObserverForInterval(CMTimeMakeWithSeconds(1/30.0, Int32(NSEC_PER_SEC)), queue: nil) { time in
let duration = CMTimeGetSeconds(playerItem.duration)
progressView.progress = Float((CMTimeGetSeconds(time) / duration))
}
Dans mon cas, le code suivant fonctionne avec Swift 3:
var timeObserver: Any?
override func viewDidLoad() {
........
let interval = CMTime(seconds: 0.05, preferredTimescale: CMTimeScale(NSEC_PER_SEC))
timeObserver = avPlayer.addPeriodicTimeObserver(forInterval: interval, queue: DispatchQueue.main, using: { elapsedTime in
self.updateSlider(elapsedTime: elapsedTime)
})
}
func updateSlider(elapsedTime: CMTime) {
let playerDuration = playerItemDuration()
if CMTIME_IS_INVALID(playerDuration) {
seekSlider.minimumValue = 0.0
return
}
let duration = Float(CMTimeGetSeconds(playerDuration))
if duration.isFinite && duration > 0 {
seekSlider.minimumValue = 0.0
seekSlider.maximumValue = duration
let time = Float(CMTimeGetSeconds(elapsedTime))
seekSlider.setValue(time, animated: true)
}
}
private func playerItemDuration() -> CMTime {
let thePlayerItem = avPlayer.currentItem
if thePlayerItem?.status == .readyToPlay {
return thePlayerItem!.duration
}
return kCMTimeInvalid
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
avPlayer.removeTimeObserver(timeObserver!)
}
pour la chronologie, je le fais
-(void)changeSliderValue {
double duration = CMTimeGetSeconds(self.player.currentItem.duration);
[lengthSlider setMaximumValue:(float)duration];
lengthSlider.value = CMTimeGetSeconds([self.player currentTime]);
int seconds = lengthSlider.value,minutes = seconds/60,hours = minutes/60;
int secondsRemain = lengthSlider.maximumValue - seconds,minutesRemain = secondsRemain/60,hoursRemain = minutesRemain/60;
seconds = seconds-minutes*60;
minutes = minutes-hours*60;
secondsRemain = secondsRemain - minutesRemain*60;
minutesRemain = minutesRemain - hoursRemain*60;
NSString *hourStr,*minuteStr,*secondStr,*hourStrRemain,*minuteStrRemain,*secondStrRemain;
hourStr = hours > 9 ? [NSString stringWithFormat:@"%d",hours] : [NSString stringWithFormat:@"0%d",hours];
minuteStr = minutes > 9 ? [NSString stringWithFormat:@"%d",minutes] : [NSString stringWithFormat:@"0%d",minutes];
secondStr = seconds > 9 ? [NSString stringWithFormat:@"%d",seconds] : [NSString stringWithFormat:@"0%d",seconds];
hourStrRemain = hoursRemain > 9 ? [NSString stringWithFormat:@"%d",hoursRemain] : [NSString stringWithFormat:@"0%d",hoursRemain];
minuteStrRemain = minutesRemain > 9 ? [NSString stringWithFormat:@"%d",minutesRemain] : [NSString stringWithFormat:@"0%d",minutesRemain];
secondStrRemain = secondsRemain > 9 ? [NSString stringWithFormat:@"%d",secondsRemain] : [NSString stringWithFormat:@"0%d",secondsRemain];
timePlayed.text = [NSString stringWithFormat:@"%@:%@:%@",hourStr,minuteStr,secondStr];
timeRemain.text = [NSString stringWithFormat:@"-%@:%@:%@",hourStrRemain,minuteStrRemain,secondStrRemain];
Et importer le cadre CoreMedia
lengthSlider est UISlider
J'ai pris les réponses de iOSPawan et Raphael, puis je les ai adaptées à mes besoins. J'ai donc de la musique et UIProgressView qui est toujours en boucle et lorsque vous passez à l'écran suivant, vous revenez à la chanson et à la barre. où ils ont été laissés.
Code:
@interface YourClassViewController (){
NSObject * periodicPlayerTimeObserverHandle;
}
@property (nonatomic, strong) AVPlayer *player;
@property (nonatomic, strong) UIProgressView *progressView;
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
if(_player != nil && ![self isPlaying])
{
[self musicPlay];
}
}
-(void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
if (_player != nil) {
[self stopPlaying];
}
}
// ----------
// PLAYER
// ----------
-(BOOL) isPlaying
{
return ([_player rate] > 0);
}
-(void) musicPlay
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(playerItemDidReachEnd:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:[_player currentItem]];
__weak typeof(self) weakSelf = self;
periodicPlayerTimeObserverHandle = [_player addPeriodicTimeObserverForInterval:CMTimeMakeWithSeconds(1.0 / 60.0, NSEC_PER_SEC)
queue:NULL
usingBlock:^(CMTime time){
[weakSelf updateProgressBar];
}];
[_player play];
}
-(void) stopPlaying
{
@try {
if(periodicPlayerTimeObserverHandle != nil)
{
[_player removeTimeObserver:periodicPlayerTimeObserverHandle];
periodicPlayerTimeObserverHandle = nil;
}
[[NSNotificationCenter defaultCenter] removeObserver:self name:AVPlayerItemDidPlayToEndTimeNotification object:nil];
[_player pause];
}
@catch (NSException * __unused exception) {}
}
-(void) playPreviewSong:(NSURL *) previewSongURL
{
[self configureAVPlayerAndPlay:previewSongURL];
}
-(void) configureAVPlayerAndPlay: (NSURL*) url {
if(_player)
[self stopPlaying];
AVAsset *audioFileAsset = [AVURLAsset URLAssetWithURL:url options:nil];
AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:audioFileAsset];
_player = [AVPlayer playerWithPlayerItem:playerItem];
[_player addObserver:self forKeyPath:@"status" options:0 context:nil];
CRLPerformBlockOnMainThreadAfterDelay(^{
NSError *loadErr;
if([audioFileAsset statusOfValueForKey:@"playable" error:&loadErr] == AVKeyValueStatusLoading)
{
[audioFileAsset cancelLoading];
[self stopPlaying];
[self showNetworkError:NSLocalizedString(@"Could not play file",nil)];
}
}, NETWORK_REQUEST_TIMEOUT);
}
- (void)updateProgressBar
{
double currentTime = CMTimeGetSeconds(_player.currentTime);
if(currentTime <= 0.05){
[_progressView setProgress:(float)(0.0) animated:NO];
return;
}
if (isfinite(currentTime) && (currentTime > 0))
{
float maxValue = CMTimeGetSeconds(_player.currentItem.asset.duration);
[_progressView setProgress:(float)(currentTime/maxValue) animated:YES];
}
}
-(void) showNetworkError:(NSString*)errorMessage
{
UIAlertController *alert = [UIAlertController alertControllerWithTitle:NSLocalizedString(@"No connection", nil) message:errorMessage preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:NSLocalizedString(@"OK", nil) style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
// do nothing
}]];
[self presentViewController:alert animated:YES completion:nil];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if (object == _player && [keyPath isEqualToString:@"status"]) {
if (_player.status == AVPlayerStatusFailed) {
[self showNetworkError:NSLocalizedString(@"Could not play file", nil)];
} else if (_player.status == AVPlayerStatusReadyToPlay) {
NSLog(@"AVPlayerStatusReadyToPlay");
[TLAppAudioAccess setAudioAccess:TLAppAudioAccessType_Playback];
[self musicPlay];
} else if (_player.status == AVPlayerItemStatusUnknown) {
NSLog(@"AVPlayerItemStatusUnknown");
}
}
}
- (void)playerItemDidReachEnd:(NSNotification *)notification {
if ([notification.object isEqual:self.player.currentItem])
{
[self.player seekToTime:kCMTimeZero];
[self.player play];
}
}
-(void) dealloc{
@try {
[_player removeObserver:self forKeyPath:@"status"];
}
@catch (NSException * __unused exception) {}
[self stopPlaying];
_player = nil;
}
Réponse rapide pour obtenir des progrès:
private func addPeriodicTimeObserver() {
// Invoke callback every half second
let interval = CMTime(seconds: 0.5,
preferredTimescale: CMTimeScale(NSEC_PER_SEC))
// Queue on which to invoke the callback
let mainQueue = DispatchQueue.main
// Add time observer
self.playerController?.player?.addPeriodicTimeObserver(forInterval: interval, queue: mainQueue) { [weak self] time in
let currentSeconds = CMTimeGetSeconds(time)
guard let duration = self?.playerController?.player?.currentItem?.duration else { return }
let totalSeconds = CMTimeGetSeconds(duration)
let progress: Float = Float(currentSeconds/totalSeconds)
print(progress)
}
}