iOS AVPlayer自定义播放器

最近通过Avplayer自定义了一个视频播放器.

项目框架#import <AVFoundation/AVFoundation.h>

1.首先播放网络视频.我需要获取一个帧作为视频简介图片,还需要获取视频时长来作为视频的简介.

IMG_1047.PNG
这个时候我们需要AVURLAsset帮助获取.

由于AVURLAsset是获取数据是同步的,有时候会导致页面卡顿,所以需要将上方法放到子线程.获取完成在主线程更新视图.

    //子线程获取数据
    __weak typeof(self) weakSelf = self;
    dispatch_async(dispatch_get_global_queue(0, 0), ^{
        [weakSelf getThumbnailImageAndTotalTimeWithURL:weakSelf.videoURL];
    });

- (void)getThumbnailImageAndTotalTimeWithURL:(NSString *)videoURL {
    NSDictionary *opts = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO] forKey:AVURLAssetPreferPreciseDurationAndTimingKey];
    AVURLAsset *urlAsset = [AVURLAsset URLAssetWithURL:[NSURL URLWithString:videoURL] options:opts];
    
    //获取image
    AVAssetImageGenerator *assetImageGenerator =[[AVAssetImageGenerator alloc] initWithAsset:urlAsset];
    assetImageGenerator.appliesPreferredTrackTransform = YES;
    assetImageGenerator.maximumSize = CGSizeMake(self.videoImageView.frame.size.width, self.videoImageView.frame.size.height);
    NSError *error = nil;
    //获取第一秒的帧
    CGImageRef imgRef = [assetImageGenerator copyCGImageAtTime:CMTimeMake(1.0, 1.0) actualTime:NULL error:&error];
    UIImage *image = [UIImage imageWithCGImage:imgRef];
    
    //获取时长
    self.totalTime = (CGFloat)(urlAsset.duration.value / urlAsset.duration.timescale);
    
    //需要在主线程进行UI更新
    __weak typeof(self) weakSelf = self;
    dispatch_async(dispatch_get_main_queue(), ^{
        [weakSelf.videoImageView setImage:image];
        weakSelf.totalTimeL.text = [self getVideoLengthFromTimeLength:weakSelf.totalTime];
    });
    
}

2.播放器

IMG_1049.PNG

只是实现了一些基本的功能.大牛们就别喷我啦.

.h

#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>

@protocol VideoPlayerViewControllerDelegate <NSObject>
//点击返回的回调 time:观看时间   isWatchFinish:是否观看完成
- (void)moviePlayerVCCallbackWithTime:(CMTime)time isWatchFinish:(BOOL)isWatchFinish;
@end

@interface VideoPlayerViewController : UIViewController
@property (nonatomic, assign) id <VideoPlayerViewControllerDelegate> delegate;
@property (nonatomic, assign) CMTime watchCMTime;//观看时间,外部传入
@property (nonatomic, strong) NSURL *url;
@property (nonatomic, copy) NSString *titleStr;//title
@end

.m

#define TopViewHeight 50
#define BottomViewHeight 50
#define ViewWidth [UIScreen mainScreen].bounds.size.width
#define ViewHeight [UIScreen mainScreen].bounds.size.height

#import "VideoPlayerViewController.h"

@interface VideoPlayerViewController ()
//TopView
@property (nonatomic, strong) UIView *topView;
@property (nonatomic, strong) UIButton *backBtn;
@property (nonatomic, strong) UILabel *titleL;
//BottomView
@property (nonatomic, strong) UIView *bottomView;
@property (nonatomic, strong) UIButton *playBtn;
@property (nonatomic, strong) UILabel *timeL;
@property (nonatomic, strong) UISlider *videoSlider;

//Player
@property (nonatomic, strong) AVPlayer *player;
@property (nonatomic, strong) AVPlayerItem *playerItem;
//播放数据
@property (nonatomic, assign) CGFloat totalTime;
@property (nonatomic, assign) CMTime currentTime;
@property (nonatomic, assign) id timeObser;
@property (nonatomic, strong) NSTimer *avTimer;

//判断状态
@property (nonatomic, assign) BOOL isPlay;//是否播放
@property (nonatomic, assign) BOOL isShowToolView;//是否展示工具
@property (nonatomic, assign) BOOL isMoveSlider;//是否移动滑竿
@property (nonatomic, assign) BOOL isWatchFinish;//是否观看结束
@end

@implementation VideoPlayerViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self prefersStatusBarHidden];
    self.isShowToolView = YES;
    self.isWatchFinish = NO;
    self.view.backgroundColor = [UIColor blackColor];
    [self layoutAVPlayer];
    [self layoutTopView];
    [self layoutBottomView];
    if (0.0 != self.watchCMTime.value && 0.0 != self.watchCMTime.timescale) {
        //已为您跳转上次播放
        [self.player seekToTime:self.watchCMTime];
    }
    [self playerSetPlay:YES];
    //触发计时
    [self.avTimer setFireDate:[NSDate dateWithTimeIntervalSinceNow:5]];
}

#pragma mark - AVPlayer
- (void)layoutAVPlayer {
    CGRect playerFrame = CGRectMake(0, 0, self.view.layer.bounds.size.height, self.view.layer.bounds.size.width);
    
    AVURLAsset *asset = [AVURLAsset assetWithURL: _url];
    //获取视频总时长
    _totalTime = (CGFloat)(asset.duration.value / asset.duration.timescale);
    _playerItem = [AVPlayerItem playerItemWithAsset: asset];
    _player = [[AVPlayer alloc]initWithPlayerItem:_playerItem];
    
    AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:_player];
    playerLayer.frame = playerFrame;
    playerLayer.videoGravity = AVLayerVideoGravityResizeAspect;
    [self.view.layer addSublayer:playerLayer];
    
    //Observer
    [self addVideoTimerObserver];
    [self addNotifications];
}

#pragma mark - TopView
- (void)layoutTopView {
    self.topView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, self.view.bounds.size.height, TopViewHeight)];
    _topView.backgroundColor = [UIColor blackColor];
    _topView.alpha = 0.6;
    
    self.backBtn = [[UIButton alloc]initWithFrame:CGRectMake(20, 10, 30, 30)];
    [_backBtn setImage:[UIImage imageNamed:@"player_back"] forState:UIControlStateNormal];
    [_backBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [_backBtn addTarget:self action:@selector(backClick) forControlEvents:UIControlEventTouchUpInside];
    [_topView addSubview:_backBtn];
    
    self.titleL = [[UILabel alloc]initWithFrame:CGRectMake(70, 10, self.view.bounds.size.width - 140, 30)];
    _titleL.font = [UIFont fontWithName:@"STHeitiSC-Light" size:20];
    _titleL.backgroundColor = [UIColor clearColor];
    _titleL.text = self.titleStr;
    _titleL.textColor = [UIColor whiteColor];
    _titleL.textAlignment = NSTextAlignmentCenter;
    [_topView addSubview:_titleL];
    
    [self.view addSubview:_topView];
}

//返回Click
- (void)backClick {
    [self.player pause];
    if ([self.delegate respondsToSelector:@selector(moviePlayerVCCallbackWithTime:isWatchFinish:)]) {
        [self.delegate moviePlayerVCCallbackWithTime:self.currentTime isWatchFinish:self.isWatchFinish];
    }
    [self dismissViewControllerAnimated:YES completion:nil];
}

//设置Click
- (void)settingsClick:(UIButton *)btn {
    _isShowToolView = NO;
    [UIView animateWithDuration:0.5 animations:^{
        _topView.hidden = YES;
        _bottomView.hidden = YES;
        _videoSlider.hidden = YES;
    }];
}

#pragma mark - BottomView
- (void)layoutBottomView {
    _bottomView = [[UIView alloc]initWithFrame:CGRectMake(0, ViewWidth - BottomViewHeight, ViewHeight, BottomViewHeight)];
    _bottomView.backgroundColor = [UIColor blackColor];
    _bottomView.alpha = 0.6;
    [self.view addSubview:_bottomView];
    
    _playBtn = [[UIButton alloc]initWithFrame:CGRectMake(10, 10, 30, 30)];
    [_playBtn setImage:[UIImage imageNamed:@"player_play"] forState:UIControlStateNormal];
    [_playBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [_playBtn addTarget:self action:@selector(playBtnClick:) forControlEvents:UIControlEventTouchUpInside];
    [_bottomView addSubview:_playBtn];
    
    _timeL = [[UILabel alloc]initWithFrame:CGRectMake(50, 10, self.view.bounds.size.height - 70, 30)];
    _timeL.backgroundColor = [UIColor clearColor];
    _timeL.textColor = [UIColor whiteColor];
    _timeL.textAlignment = NSTextAlignmentRight;
    [_bottomView addSubview:_timeL];
    //在totalTimeLabel上显示总时间
    _timeL.text = [NSString stringWithFormat:@"00:00/%@", [self getVideoLengthFromTimeLength:_totalTime]];
    
    //进度条
    self.videoSlider = [[UISlider alloc]initWithFrame:CGRectMake(0, _bottomView.frame.origin.y - 10, _bottomView.frame.size.width, 20)];
    [_videoSlider setMinimumTrackTintColor:[UIColor whiteColor]];
    [_videoSlider setMaximumTrackTintColor:[UIColor colorWithRed:0.49f green:0.48f blue:0.49f alpha:1.00f]];
    [_videoSlider setThumbImage:[UIImage imageNamed:@"video_slider_progressbar"] forState:UIControlStateNormal];
    [_videoSlider addTarget:self action:@selector(scrubbingDidBegin) forControlEvents:UIControlEventTouchDown];
    [_videoSlider addTarget:self action:@selector(sliderValueChanged) forControlEvents:UIControlEventValueChanged];
    [_videoSlider addTarget:self action:@selector(scrubbingDidEnd) forControlEvents:(UIControlEventTouchUpInside | UIControlEventTouchCancel)];
    [self.view addSubview:_videoSlider];
}

//按住滑块
- (void)scrubbingDidBegin {
    //暂停播放
    [self playerSetPlay:NO];
    //停止计时
    [self.avTimer setFireDate:[NSDate distantFuture]];
    self.isMoveSlider = YES;
}

//滑动值变化
- (void)sliderValueChanged {
    //设置滑动的时间
    float dragedSeconds = floorf(self.totalTime * _videoSlider.value);
    CMTime newCMTime = CMTimeMake(dragedSeconds, 1.0);
    self.timeL.text = [NSString stringWithFormat:@"%@/%@", [self getStringFromCMTime:newCMTime], [self getVideoLengthFromTimeLength:self.totalTime]];
}

//释放滑块
- (void)scrubbingDidEnd {
    //1.通过实际百分比获取秒数。
    float dragedSeconds = floorf(self.totalTime * _videoSlider.value);
    CMTime newCMTime = CMTimeMake(dragedSeconds, 1.0);
    //2.更新电影到实际秒数。
    [_player seekToTime:newCMTime];
    //3.重新开始播放
    [self playerSetPlay:YES];
    
    //重新开始计时
    [self.avTimer setFireDate:[NSDate dateWithTimeIntervalSinceNow:5]];
    self.isMoveSlider = NO;
}

//播放/暂停
- (void)playBtnClick:(UIButton *)btn{
    if (!_isPlay) {
        [self playerSetPlay:YES];
    } else {
        [self playerSetPlay:NO];
    }
}

#pragma mark - Set Play
- (void)playerSetPlay:(BOOL)isPlay{
    if (isPlay) {
        [_player play];
        _isPlay = YES;
        [_playBtn setImage:[UIImage imageNamed:@"player_pause"] forState:UIControlStateNormal];
    } else {
        [_player pause];
        _isPlay = NO;
        [_playBtn setImage:[UIImage imageNamed:@"player_play"] forState:UIControlStateNormal];
    }
}

#pragma mark - Touch
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
    CGPoint point = [[touches anyObject] locationInView:self.view];
    if (_isShowToolView) {
        //上下View为显示状态，此时点击上下View直接return
        if ((point.y > CGRectGetMinY(self.topView.frame) && point.y < CGRectGetMaxY(self.topView.frame)) || (point.y < CGRectGetMaxY(self.bottomView.frame) && point.y > CGRectGetMinY(self.bottomView.frame))) {
            return;
        }
        _isShowToolView = NO;
        [UIView animateWithDuration:0.5 animations:^{
            _topView.hidden = YES;
            _bottomView.hidden = YES;
            _videoSlider.hidden = YES;
        }];
        //上下视图消失,关闭计时
        [self.avTimer setFireDate:[NSDate distantFuture]];
    } else {
        _isShowToolView = YES;
        [UIView animateWithDuration:0.5 animations:^{
            _topView.hidden = NO;
            _bottomView.hidden = NO;
            _videoSlider.hidden = NO;
        }];
        //上下视图出现,开启计时
        [self.avTimer setFireDate:[NSDate dateWithTimeIntervalSinceNow:5]];
    }
}

#pragma mark - Timer
//计时 5秒Hide Bar
- (NSTimer *)avTimer {
    if (!_avTimer) {
        self.avTimer = [NSTimer scheduledTimerWithTimeInterval:0 target:self selector:@selector(handleHideBar) userInfo:nil repeats:YES];
    }
    return _avTimer;
}
- (void)handleHideBar {
    _isShowToolView = NO;
    [UIView animateWithDuration:0.5 animations:^{
        _topView.hidden = YES;
        _bottomView.hidden = YES;
        _videoSlider.hidden = YES;
    }];
    [self.avTimer setFireDate:[NSDate distantFuture]];
}


#pragma mark - 状态栏与横屏设置
//隐藏状态栏
- (BOOL)prefersStatusBarHidden{
    return YES;
}
//默认为右旋转
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationLandscapeRight;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


#pragma mark - TimerObserver
//检测观看时间
- (void)addVideoTimerObserver {
    __weak typeof(self) weakSelf = self;
    _timeObser = [_player addPeriodicTimeObserverForInterval:CMTimeMake(1, 1) queue:NULL usingBlock:^(CMTime time) {
        weakSelf.currentTime = time;
        if (!weakSelf.isMoveSlider) {
            weakSelf.timeL.text = [NSString stringWithFormat:@"%@/%@", [weakSelf getStringFromCMTime:time], [weakSelf getVideoLengthFromTimeLength:weakSelf.totalTime]];
            CGFloat watchTime = time.value / time.timescale;
            CGFloat progress = watchTime / self.totalTime * 1.0f;
            [weakSelf.videoSlider setValue:progress animated:NO];
        }
    }];
}
- (void)removeVideoTimerObserver {
    [_player removeTimeObserver:_timeObser];
}

#pragma mark - Notifications
- (void)addNotifications {
    /*
     *  Video
     */
    //监听status属性
    [self.playerItem addObserver:self forKeyPath:@"status"options:NSKeyValueObservingOptionNew context:nil];
    //视频播放完成
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playerItemDidReachEnd:) name:AVPlayerItemDidPlayToEndTimeNotification object:nil];
    
    /*
     *  Application
     */
    //进入后台
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(appDidEnterBackground) name:UIApplicationWillResignActiveNotification object:nil];
    //进入前台
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(appDidEnterPlayground) name:UIApplicationDidBecomeActiveNotification object:nil];
    //监听耳机状态
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(audioRouteChangeListenerCallback:) name:UIApplicationDidBecomeActiveNotification object:nil];
}
- (void)removeNotifications {
    [self.playerItem removeObserver:self forKeyPath:@"status"];
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

#pragma mark - KVO
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
    if (object == self.playerItem) {
        if ([keyPath isEqualToString:@"status"]) {
            AVPlayerStatus status = [[change objectForKey:NSKeyValueChangeNewKey] integerValue];
            switch (status) {
                case AVPlayerStatusUnknown:
                {
                    NSLog(@"未知错误:%@", self.playerItem.error);
                }
                    break;
                case AVPlayerStatusReadyToPlay:
                {
                    NSLog(@"准备播放");
                }
                    break;
                case AVPlayerStatusFailed:
                {
                    NSLog(@"播放失败:%@", self.playerItem.error);
                }
                    break;
                    
                default:
                    break;
            }
        }
    }
}
//观看结束
- (void)playerItemDidReachEnd:(NSNotification *)notification {
    self.isWatchFinish = YES;
    [self backClick];
}
//进入后台
- (void)appDidEnterBackground {
    [self playerSetPlay:NO];
}
//进入前台
- (void)appDidEnterPlayground {
    
}
//检测耳机状态
- (void)audioRouteChangeListenerCallback:(NSNotification *)notification {
    NSDictionary *interuptionDict = notification.userInfo;
    NSInteger routeChangeReason = [[interuptionDict valueForKey:AVAudioSessionRouteChangeReasonKey] integerValue];
    switch (routeChangeReason) {
        case AVAudioSessionRouteChangeReasonNewDeviceAvailable:
            NSLog(@"耳机插入");
            break;
        case AVAudioSessionRouteChangeReasonOldDeviceUnavailable:
        {
            NSLog(@"耳机拔出");
            [self playerSetPlay:NO];
        }
            break;
            
        default:
            break;
    }
}

#pragma mark - Utils

- (NSString *)getStringFromCMTime:(CMTime)time {
    float currentTimeValue = (CGFloat)time.value/time.timescale;//得到当前的播放时
    
    NSDate * currentDate = [NSDate dateWithTimeIntervalSince1970:currentTimeValue];
    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
    NSInteger unitFlags = NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond ;
    NSDateComponents *components = [calendar components:unitFlags fromDate:currentDate];
    
    if (currentTimeValue >= 3600 ) {
        return [NSString stringWithFormat:@"%@:%@:%@",components.hour < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.hour] : [NSString stringWithFormat:@"%ld", (long)components.hour], components.minute < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.minute] : [NSString stringWithFormat:@"%ld", (long)components.minute], components.second < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.second] : [NSString stringWithFormat:@"%ld", (long)components.second]];
    } else {
        return [NSString stringWithFormat:@"%@:%@",components.minute < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.minute] : [NSString stringWithFormat:@"%ld", (long)components.minute], components.second < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.second] : [NSString stringWithFormat:@"%ld", (long)components.second]];
    }
}

- (NSString *)getVideoLengthFromTimeLength:(CGFloat)timeLength {
    NSDate *date = [NSDate dateWithTimeIntervalSince1970:timeLength];
    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
    NSInteger unitFlags = NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond ;
    NSDateComponents *components = [calendar components:unitFlags fromDate:date];
    
    if (timeLength >= 3600 ) {
        return [NSString stringWithFormat:@"%@:%@:%@",components.hour < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.hour] : [NSString stringWithFormat:@"%ld", (long)components.hour], components.minute < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.minute] : [NSString stringWithFormat:@"%ld", (long)components.minute], components.second < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.second] : [NSString stringWithFormat:@"%ld", (long)components.second]];
    } else {
        return [NSString stringWithFormat:@"%@:%@",components.minute < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.minute] : [NSString stringWithFormat:@"%ld", (long)components.minute], components.second < 10 ? [NSString stringWithFormat:@"0%ld", (long)components.second] : [NSString stringWithFormat:@"%ld", (long)components.second]];
    }
}

#pragma mark - dealloc
//回收
- (void)dealloc {
    [self removeVideoTimerObserver];
    [self removeNotifications];
    [self.avTimer invalidate];
    self.avTimer = nil;
    self.player = nil;
    self.playerItem = nil;
}

@end