AVPlayer实现简单播放器

  在我们之前的项目，视频的播放都是使用MPMoviePlayerViewController（包含了播放的UI，并封装好了播放的一些函数），但是苹果的官网表示从IOS9版本开始，MPMoviePlayerViewController被弃用了，推荐使用AVPictureInPictureController或者AVPlayerViewController。

  但是一直使用苹果封装的ViewController可控性依旧比较差，如：

（1）播放状态无法获得；

（2）置于后台和唤醒时，在不同设备上视频播放展现状态不同；

（3）视频播放进度与画面不同步；

（4）播放的声音和画面不同步；

（5）无法直接加其他UI，如：分享按钮等。

基于以上几点考虑，我决定直接用AVPlayer直接实现一个播放器，完成一些简单的播放功能。

基本功能：

（1）进度条、视频播放画面、播放时间同步；

（2）可以播放和暂停，且两种状态有不同UI切换；

（3）进度条可以拖动，且视频播放画面同步；

（4）点击关闭按钮可以销毁播放器；

（5）增加了AutoLayout布局约束

（6）视频的横竖屏切换播放与设备的横竖屏切换同步。

（7）一些小细节，如：进度条拖拽、点击、抬起时，播放/暂停按钮UI的变化；置于后台和唤醒，重新设置视频播放状态等。

代码如下：

头文件：ViewController.h

#import <UIKit/UIKit.h>#import <AVFoundation/AVFoundation.h>@interface ViewController : UIViewController@property (nonatomic,strong)AVPlayer *avPlayer;@property (nonatomic,strong)AVPlayerItem *avPlayerItem;@property (nonatomic,strong)AVPlayerLayer *avPlayerLayer;//装载视频layer、进度条、时间、时长等UI的容器@property (nonatomic,strong)UIView *videoContainer;//进度条UI@property (nonatomic,strong)UISlider *progress;//当前播放时间UI@property (nonatomic,strong) UILabel *startLabel;//视频总时长UI@property (nonatomic,strong) UILabel *endLabel;//关闭按钮@property (nonatomic,strong) UIButton *closeButton;//控制播放和暂停的按钮@property (nonatomic,strong) UIButton *playButton;//当前播放时间@property (nonatomic,assign) float playheadTime;//是否处于播放状态@property (nonatomic,assign) BOOL isPlaying;//播放帧的监视器@property (nonatomic,strong) id playTimeObserver;@end

实现：ViewController.m

<span style="font-size:14px;">#import "ViewController.h"@interface ViewController ()@endstatic NSBundle *playerBundle;NSString * const XAdVideoStatusKey = @"status";@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    NSString *urlString = @"要播放的视频地址 http://....";    [self configPlayerControllerWithURL:urlString];    }- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];}#pragma mark - public- (void) configPlayerControllerWithURL:(NSString *)urlString{    [self initBundle];    [self setProgressRefProperties];    [self showUI];    NSURL *url = [NSURL URLWithString:urlString];    [self setupPlayerWithURL:url];    }/* * 重头播放 */- (void)play{    if (self.avPlayer) {        self.isPlaying = YES;        [self.avPlayer play];    }}/* * 暂停 */- (void)pause{    if (self.avPlayer) {        [self.avPlayer pause];        self.isPlaying = NO;    }    }/* * 销毁对象 */- (void)cancel {    if (self.avPlayer) {        [self.avPlayer pause];    }    [self removeUIView];    [self removePlayerItemObserver];    [self removePlayerObserver];    [self destroyAllProperties];    }/* * 从某一帧播放 */- (void)playFromTime:(double)time{    NSLog(@"playFromTime = %f",time);    if (self.avPlayer) {        [self seekToTime:time];        [self.avPlayer play];        self.isPlaying = YES;    }}/* * 在某一帧暂停 */- (void)pauseOnTime:(double)time{    NSLog(@"pauseOnTime = %f",time);    if (self.avPlayer) {        [self seekToTime:time];        [self.avPlayer pause];        self.isPlaying = NO;    }}#pragma mark - action event/* * 点击播放或暂停按钮，控制播放状态 */- (void) onClickPlayOrPause{    if (self.isPlaying) {        [_playButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_play"] forState:UIControlStateNormal];        [self pauseOnTime:self.playheadTime];    }else{        [_playButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_pause"] forState:UIControlStateNormal];        if ([self playerReachedEnd]) {            [self playFromTime:0];        }else{            [self playFromTime:self.playheadTime];        }    }}/* * 关闭按钮触发，销毁所有player和UI相关对象 */- (void) onClickClose{    [self cancel];}#pragma mark - add observer/* * 播放帧的观察者 */- (void)addPlayerObserver{    // add 应用置于后台、唤醒、屏幕旋转的监听器 （如果不需要此功能可以不添加）    [self addAppObserver];    CMTime interval = CMTimeMakeWithSeconds(0.1, NSEC_PER_USEC);    __weak ViewController *selfWeak = self;    self.playTimeObserver = [self.avPlayer addPeriodicTimeObserverForInterval:interval                                                                        queue:NULL                                                                   usingBlock:^(CMTime time) {                                                                       // 当前的播放时间                                                                       float currentTime = (float)CMTimeGetSeconds(time);                                                                       // 刷新进度条以及时间Label的显示                                                                       [selfWeak refreshSlide:currentTime];                                                                   }];}- (void)addPlayerItemObserver{    // 监测播放的状态（已就绪 / 失败 ）    [self.avPlayerItem addObserver:self forKeyPath:XAdVideoStatusKey options:NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew context:nil];    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playerItemDidReachEnd:) name:AVPlayerItemDidPlayToEndTimeNotification object:self.avPlayerItem];    }- (void)addAppObserver{    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidBecomeActiveNotification object:nil];    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationWillResignActiveNotification object:nil];    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIDeviceOrientationDidChangeNotification object:nil];    // 应用从后台唤醒    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(appDidBecomeActive:) name:UIApplicationDidBecomeActiveNotification object:nil];    // 应用置于后台    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(appDidEnterBackground:) name:UIApplicationWillResignActiveNotification object:nil];    // 屏幕旋转    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(orientationChanged:) name:UIDeviceOrientationDidChangeNotification object:nil];}#pragma mark - remove observer- (void)removePlayerObserver{    [self removeAppObserver];    if (self.avPlayer && self.playTimeObserver) {        [self.avPlayer removeTimeObserver:self.playTimeObserver];    }}- (void)removePlayerItemObserver{    [self.avPlayerItem removeObserver:self forKeyPath:XAdVideoStatusKey context:nil];    [[NSNotificationCenter defaultCenter] removeObserver:self name:AVPlayerItemDidPlayToEndTimeNotification object:self.avPlayerItem];}- (void)removeAppObserver{    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidBecomeActiveNotification object:nil];    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationWillResignActiveNotification object:nil];    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIDeviceOrientationDidChangeNotification object:nil];}#pragma mark - observer & notification- (void)appDidBecomeActive:(NSNotification *)notification{    //后台唤醒继续播放    [self playFromTime:self.playheadTime];}- (void)appDidEnterBackground:(NSNotification *)notification{    //置于后台停止播放    [self pauseOnTime:self.playheadTime];}- (void)orientationChanged:(NSNotification *)notification{    //屏幕旋转重新布局UI    [self reloadVideoContainerView];}/* * 监测player的状态 */- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object                        change:(NSDictionary *)change context:(void *)context{    if (object == self.avPlayerItem && [keyPath isEqualToString:XAdVideoStatusKey]) {        if (self.avPlayerItem.status == AVPlayerItemStatusFailed) {            NSLog(@"AVPlayerItemStatusFailed.");        } else if (self.avPlayerItem.status == AVPlayerItemStatusReadyToPlay) {            if (self.videoContainer) {                self.avPlayerLayer.frame = [self.videoContainer bounds];                NSLog(@"add playerLayer to video container.");                [self.videoContainer.layer insertSublayer:self.avPlayerLayer atIndex:0];                [self play];            }        }    }}- (void) playerItemDidReachEnd:(NSNotification *)notification{    // 播放结束，改变播放暂停按钮的状态    [self changePlayOrPauseUI];    }/* * 刷新进度条以及相关UI */- (void)refreshSlide:(float) time{    CMTime duration = self.avPlayer.currentItem.asset.duration;    self.playheadTime = time;    int currentSeconds = (int)(self.playheadTime);    int fullDuration = (int)(duration.value/duration.timescale);    self.progress.minimumValue = 0;    self.progress.maximumValue = fullDuration;    // 刷新进度条的进度    self.progress.value = currentSeconds;    // 刷新时间的显示    NSMutableAttributedString *startLabelText = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%02d:%02d",currentSeconds/60,currentSeconds%60]];    NSMutableAttributedString *endLabelText = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%02d:%02d",fullDuration/60,fullDuration%60]];    [startLabelText addAttribute:NSForegroundColorAttributeName value:[UIColor whiteColor] range:NSMakeRange(0,startLabelText.length)];    [endLabelText addAttribute:NSForegroundColorAttributeName value:[UIColor whiteColor] range:NSMakeRange(0,endLabelText.length)];    self.startLabel.attributedText = startLabelText;    self.endLabel.attributedText = endLabelText;}/* * 手动滑动进度条继续播放或者暂停 */- (void) progressChanged{    if ([self isPlaying]) {        // 如果之前是播放状态，那么继续播放        [self playFromTime:self.progress.value];    }else{        // 如果之前是是暂停状态，那么保持暂停        [self pauseOnTime:self.progress.value];    }    }/* * 进度条被拖拽，改变播放暂停按钮的状态 */- (void) progressDragInside{    NSLog(@"progressDragInside value:%f",self.progress.value);    [_playButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_play"] forState:UIControlStateNormal];}/* * 进度条被按住，改变播放暂停按钮的状态 */- (void) progressTouchDown{    NSLog(@"progressTouchDown value:%f",self.progress.value);    [_playButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_play"] forState:UIControlStateNormal];    }/* * 进度条按住后松开，改变播放暂停按钮的状态 */- (void)progressTouchUpInside{    NSLog(@"progressTouchUpInside value:%f",self.progress.value);    if ([self isPlaying]) {        [_playButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_pause"] forState:UIControlStateNormal];    }else{        [_playButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_play"] forState:UIControlStateNormal];    }}#pragma mark - private/* * 屏幕旋转后刷新frame的大小 */- (void)reloadVideoContainerView{    CGPoint currentOrigin = [UIScreen mainScreen].applicationFrame.origin;    CGSize currentSize = [self getScreenSize];    CGRect currentScreenFrame = CGRectMake(currentOrigin.x, currentOrigin.y, currentSize.width, currentSize.height);    self.videoContainer.frame = currentScreenFrame;    self.avPlayerLayer.frame = self.videoContainer.bounds;}/* * 进度条相关UI的布局（如果无此需求可忽略，但是在初始化时的CGRect要设置好） * 布局顺序：在app的底部 ==> 播放/暂停按钮、播放时间、进度条、播放时长 *         在app的左上角 ==> 关闭按钮 */- (void)addConstraint{        _closeButton.translatesAutoresizingMaskIntoConstraints = NO;    _progress.translatesAutoresizingMaskIntoConstraints = NO;    _playButton.translatesAutoresizingMaskIntoConstraints = NO;    _startLabel.translatesAutoresizingMaskIntoConstraints = NO;    _endLabel.translatesAutoresizingMaskIntoConstraints = NO;        // Align play button left to video container    NSLayoutConstraint* playbuttonLeftConstraint = [NSLayoutConstraint constraintWithItem:_playButton attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.videoContainer attribute:NSLayoutAttributeLeading multiplier:1.0f constant:10.0f];    // Align play button buttom to video container    NSLayoutConstraint* playbuttonButtomConstraint = [NSLayoutConstraint constraintWithItem:_playButton attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.videoContainer attribute:NSLayoutAttributeBottom multiplier:1.0f constant: -5.0f];        // Align start label left to play button    NSLayoutConstraint* startLabelLeftConstraint = [NSLayoutConstraint constraintWithItem:_startLabel attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.playButton attribute:NSLayoutAttributeTrailing multiplier:1.0f constant:10.0f];    // Align start label centerY to video container    NSLayoutConstraint* startLabelCenterYConstraint = [NSLayoutConstraint constraintWithItem:_startLabel attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:self.progress attribute:NSLayoutAttributeCenterY multiplier:1.0f constant:0.0f];        // Align progress slider left to start label    NSLayoutConstraint* progressLeftConstraint = [NSLayoutConstraint constraintWithItem:_progress attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.startLabel attribute:NSLayoutAttributeTrailing multiplier:1.0f constant:10.0f];    // Align progress slider right to end label    NSLayoutConstraint* progressRightConstraint = [NSLayoutConstraint constraintWithItem:_progress attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:self.endLabel attribute:NSLayoutAttributeLeading multiplier:1.0f constant:-10.0f];    // Align progress centerY to play button    NSLayoutConstraint* progressCenterYConstraint = [NSLayoutConstraint constraintWithItem:_progress attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:self.playButton attribute:NSLayoutAttributeCenterY multiplier:1.0f constant:0.0f];        // Align end label right to video contrainer    NSLayoutConstraint* endLabelRightConstraint = [NSLayoutConstraint constraintWithItem:_endLabel attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:self.videoContainer attribute:NSLayoutAttributeTrailing multiplier:1.0f constant:-10.0f];    // Align end label centerY to video container    NSLayoutConstraint* endLabelCenterYConstraint = [NSLayoutConstraint constraintWithItem:_endLabel attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:self.progress attribute:NSLayoutAttributeCenterY multiplier:1.0f constant:0.0f];        // Align close button left to video container    NSLayoutConstraint* closebuttonLeftConstraint = [NSLayoutConstraint constraintWithItem:_closeButton attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.videoContainer attribute:NSLayoutAttributeLeading multiplier:1.0f constant:3.0f];    // Align close button top to video container    NSLayoutConstraint* closebuttonTopConstraint = [NSLayoutConstraint constraintWithItem:_closeButton attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.videoContainer attribute:NSLayoutAttributeTop multiplier:1.0f constant:3.0f];        [self.videoContainer addConstraints:@[playbuttonLeftConstraint, startLabelLeftConstraint, progressLeftConstraint, endLabelRightConstraint,progressRightConstraint,playbuttonButtomConstraint,closebuttonLeftConstraint,closebuttonTopConstraint,playbuttonButtomConstraint,startLabelCenterYConstraint,endLabelCenterYConstraint,progressCenterYConstraint]];    }/* * 获取屏幕大小，IOS8以后屏幕宽高是真实宽高，IOS8之前需要翻转 */- (CGSize) getScreenSize{    CGSize size;    CGSize screenSize = [UIScreen mainScreen].applicationFrame.size;    if ([self isLaterThanIOS8]) {        size = screenSize;        NSLog(@"ios8 or ios9, width = %f,height = %f",size.width,size.height);    }else{        if ( UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation))        {            // Landscape Orientation, reverse size values            size.width = screenSize.height;            size.height = screenSize.width;        }        else        {            // portrait orientation, use normal size values            size.width = screenSize.width;            size.height = screenSize.height;        }        NSLog(@" not ios8 or ios9, width = %f,height = %f",size.width,size.height);    }    return size;}/* * 初始化avplayerItem、avplayer、avplayerLayer */- (void)setupPlayerWithURL:(NSURL *)URL{//        dispatch_async(dispatch_get_global_queue(0, 0), ^{    self.avPlayerItem = [AVPlayerItem playerItemWithURL:URL];    [self addPlayerItemObserver];    self.avPlayer = [AVPlayer playerWithPlayerItem:self.avPlayerItem];    [self addPlayerObserver];    self.avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:self.avPlayer];    [self.avPlayerLayer setVideoGravity:AVLayerVideoGravityResizeAspect];    self.avPlayerLayer.needsDisplayOnBoundsChange = YES;//        });    }- (void) showUI{    [self addConstraint];    [self.view addSubview:self.videoContainer];    [self.videoContainer addSubview:self.progress];    [self.videoContainer addSubview:self.startLabel];    [self.videoContainer addSubview:self.endLabel];    [self.videoContainer addSubview:self.playButton];    [self.videoContainer addSubview:self.closeButton];        }- (void)setProgressRefProperties{    // 获取不包括状态栏的屏幕frame    CGRect appViewFrame = [ UIScreen mainScreen ].applicationFrame;    _videoContainer = [[UIView alloc]initWithFrame:appViewFrame];    self.videoContainer.backgroundColor = [UIColor blackColor];    // 初始化进度条（尺寸没有生效，因为后面用了布局约束）    _progress = [[UISlider alloc] initWithFrame:CGRectMake(0, 0, 100, 5)];    // 设置进度条播放按钮的图片    [_progress setThumbImage:[self getImageFromBundle:playerBundle imageName:@"player_dot"] forState:UIControlStateNormal];    [_progress setThumbImage:[self getImageFromBundle:playerBundle imageName:@"player_dot"] forState:UIControlStateHighlighted];    // 设置进度条已播放和未播放部分的颜色    [_progress setMinimumTrackTintColor:[UIColor whiteColor]];    [_progress setMaximumTrackTintColor:[UIColor darkGrayColor]];    // 设置进度条的事件函数    [self.progress addTarget:self action:@selector(progressChanged) forControlEvents:(UIControlEventValueChanged)];    [self.progress addTarget:self action:@selector(progressDragInside) forControlEvents:(UIControlEventTouchDragInside)];    [self.progress addTarget:self action:@selector(progressTouchDown) forControlEvents:(UIControlEventTouchDown)];    [self.progress addTarget:self action:@selector(progressTouchUpInside) forControlEvents:(UIControlEventTouchUpInside)];    // 初始化进度条（尺寸没有生效，因为后面用了布局约束）    _startLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 50, 15)];    _endLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 50, 15)];    // 设置时间Lable字体样式和颜色    NSMutableAttributedString *startLabelText = [[NSMutableAttributedString alloc] initWithString:@"00:00"];    NSMutableAttributedString *endLabelText = [[NSMutableAttributedString alloc] initWithString:@"00:00"];    [startLabelText addAttribute:NSForegroundColorAttributeName value:[UIColor whiteColor] range:NSMakeRange(0,startLabelText.length)];    [endLabelText addAttribute:NSForegroundColorAttributeName value:[UIColor whiteColor] range:NSMakeRange(0,endLabelText.length)];    self.startLabel.attributedText = startLabelText;    self.endLabel.attributedText = endLabelText;    //初始化播放暂停按钮，设置图片    _playButton = [[UIButton alloc] initWithFrame:CGRectMake(10, 50, 20, 20)];    [_playButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_pause"] forState:UIControlStateNormal];    [_playButton addTarget:self action:@selector(onClickPlayOrPause) forControlEvents:UIControlEventTouchUpInside];    //初始化关闭按钮，设置相应图片    _closeButton = [[UIButton alloc]initWithFrame:CGRectMake(50, 50, 20, 20)];    [_closeButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_close"] forState:UIControlStateNormal];    [_closeButton addTarget:self action:@selector(onClickClose) forControlEvents:UIControlEventTouchUpInside];    }/* * 改变播放或暂停按钮的状态 */- (void) changePlayOrPauseUI{    if (self.isPlaying) {        [_playButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_play"] forState:UIControlStateNormal];        self.isPlaying = NO;    }else{        [_playButton setImage:[self getImageFromBundle:playerBundle imageName:@"player_pause"] forState:UIControlStateNormal];        self.isPlaying = YES;    }}/* * 判断播放是否结束 */- (BOOL)playerReachedEnd {    CMTime duration = self.avPlayer.currentItem.asset.duration;    CMTime currentTime = self.avPlayer.currentItem.currentTime;    // CMTime包含value和timescale两个属性，比值用来获取真正的播放时间    int currentSeconds = (int)(currentTime.value/currentTime.timescale);    int fullDuration = (int)(duration.value/duration.timescale);    return (currentSeconds == fullDuration) ? YES : NO;}/* * 跳到某一播放帧 */- (void)seekToTime:(double)time{    if (time >= 0) {        CMTime timeStruct = CMTimeMake(time * 1000, 1000);        [self.avPlayer seekToTime:timeStruct                  toleranceBefore:kCMTimeZero                   toleranceAfter:kCMTimePositiveInfinity];    }}/* * 获取资源包 */- (void) initBundle{    NSString * bundlePath = [[ NSBundle mainBundle] pathForResource: @"playicon" ofType :@"bundle"];    playerBundle = [NSBundle bundleWithPath:bundlePath];}/* * 获取资源包中的图片资源 */- (UIImage *)getImageFromBundle:(NSBundle *) bundle imageName:(NSString *)imageName{    NSString *imagePath = [playerBundle pathForResource:imageName ofType:@"png"];    UIImage *image = [[UIImage alloc]init];    if (imagePath) {        image = [UIImage imageWithContentsOfFile:imagePath];    }    return image;}/* * 是否系统版本高于IOS8 */- (BOOL) isLaterThanIOS8{    return ([[[UIDevice currentDevice] systemVersion] hasPrefix:@"8."] || [[[UIDevice currentDevice] systemVersion] hasPrefix:@"9."]);}- (void)destroyAllProperties{    _avPlayer = nil;    _avPlayerItem = nil;    _avPlayerLayer = nil;    _progress = nil;    _startLabel = nil;    _endLabel = nil;    _closeButton = nil;    _playButton = nil;    _playTimeObserver = nil;}- (void) removeUIView{    if (self.avPlayerLayer) {        [self.avPlayerLayer removeFromSuperlayer];    }    if (self.videoContainer) {        [self.videoContainer removeFromSuperview];    }    if (self.progress) {        [self.progress removeFromSuperview];    }    if (self.closeButton) {        [self.closeButton removeFromSuperview];    }    if (self.startLabel) {        [self.startLabel removeFromSuperview];    }    if (self.endLabel) {        [self.endLabel removeFromSuperview];    }    if (self.playButton) {        [self.playButton removeFromSuperview];    }    }- (void)dealloc{    [self cancel];}@end</span>

源码地址：

 https://github.com/MsSmart/VideoPlayerDemo.git

 

未解决的问题：

（1）视频播放进度与画面不同步

（2）播放的声音和画面不同步

这两个问题是偶尔出现的，猜测是苹果AVPlayer底层的原因导致，有人提出解决方案是监控音频进度，图像线程跟音频保持一致，不同步的时候等待。但是如何实现还在研究中，如果有哪位牛人解决过类似问题，还多多请指教。