AVPlayer基本使用方法

AVPlayer同样适用与本地和远程媒体文件。可以通过AVPlayerLayer来显示。

AVURLAsset *avasset;

AVPlayerItem *item;

AVPlayer *player;

AVPlayerLayer *playerLayer;

CMTime totalTime;

CGFloat totalMovieDuration;

- (void)setupPlaybackForURL:(NSURL *)url{    NSURL *url = [NSURL URLWithString:[NSString stringWithUTF8String:url]];    avasset = [[AVURLAsset alloc] initWithURL:url options:nil];    //avasset = [AVURLAsset URLAssetWithURL:url options:nil];    item = [[AVPlayerItem alloc] initWithAsset:avasset];    //item = [AVPlayerItem playerItemWithAsset:avasset];        if(player.currentItem)        [player replaceCurrentItemWithPlayerItem:item];    else        player = [[AVPlayer alloc] initWithPlayerItem:item];    //player = [AVPlayer playerWithPlayerItem:item];    playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];        totalTime = item.duration;    totalMovieDuration = (CGFloat)totalTime.value/totalTime.timescale;        playerLayer.frame = CGRectMake(0, 0, 100, 70);        playerLayer.backgroundColor = [UIColor blackColor].CGColor;    playerLayer.videoGravity = AVLayerVideoGravityResizeAspect;    //playerLayer.shadowOffset = CGSizeMake(0, 3);    //playerLayer.shadowRadius = 5.0;    //playerLayer.shadowColor = [UIColor blackColor].CGColor;    //playerLayer.shadowOpacity = 0.8;    //[uiView.layer addSublayer:playerLayer];        playerLayer.hidden = NO;    NSString *tracksKey = @"tracks";    [avasset loadValuesAsynchronouslyForKeys:[NSArray arrayWithObject:tracksKey] completionHandler:     ^{         dispatch_async(dispatch_get_main_queue(),                        ^{                            NSError *error = nil;                            AVKeyValueStatus status = [avasset statusOfValueForKey:tracksKey error:&error];                                                        if (status == AVKeyValueStatusLoaded) {                                                                [player pause];                            }                            else {                                // You should deal with the error appropriately.                                NSLog(@"The asset's tracks were not loaded:\n%@", [error localizedDescription]);                            }                        });     }];}

判断播放暂停状态

没有专门的pause或者playing状态，可以利用rate属性:

rate的值为0.0表示暂停视频，而1.0的值是在当前项目的自然速率播放。

if(player.rate == 1.0){      playingStatue = YES;}else{       playingStatue = NO;}