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大致效果

不要介意。界面有點丑枪狂。危喉。。

AVPlayer封裝.gif

界面搭建

看下成員變量就知道我怎么搭建的了,這里我將video播放層的size作為參照量州疾，對所有控件的size按照其video的size寬高進行比例縮放

@interface VideoPlayerView()
@property (nonatomic,copy) NSString *path;                  //播放地址 自動判斷文件路徑和網(wǎng)址路徑
@property (nonatomic,strong) AVPlayer *player;              //播放類
@property (nonatomic,strong) AVPlayerLayer *playerlayer;    //顯示區(qū)域
@property (nonatomic,strong) UIButton *playBtn;             //播放暫停
@property (nonatomic,strong) UIButton *stopBtn;             // 停止
@property (nonatomic,strong) UIButton *fullScreenBtn;       //全屏
@property (nonatomic,strong) UISlider *playSlider;          //進度選擇
@property (nonatomic,strong) UIProgressView *progress;      //進度
@property (nonatomic,strong) UILabel *currentTimeLab;       //當前時間
@property (nonatomic,strong) UILabel *durationLab;          //總時間
@property (nonatomic,strong) UIView *toolView;              //工具欄view
@property (nonatomic,assign) BOOL isFullScreen;             //全屏判斷
@property (nonatomic,assign) CGFloat videoHeight;           //video高
@property (nonatomic,assign) CGFloat videoWidth;            //video寬
@end

所有控件使用懶加載 如下

//播放暫停
- (UIButton *)playBtn {
    if (!_playBtn) {
        _playBtn = [[UIButton alloc] initWithFrame:CGRectMake(kLrMargin, kUIy, kBtnWidth, kUIHeight)];
        _playBtn.backgroundColor  =[UIColor greenColor];
        _playBtn.selected = NO;
        _playBtn.enabled = NO;
        _playBtn.titleLabel.adjustsFontSizeToFitWidth = YES;
        [_playBtn setTitle:@"播放" forState:UIControlStateNormal];
        [_playBtn setTitle:@"暫停" forState:UIControlStateSelected];
        [_playBtn addTarget:self action:@selector(play) forControlEvents:UIControlEventTouchUpInside];
    }
    return _playBtn;
}

屏幕適配

由于涉及到屏幕的旋轉(zhuǎn)和適配辜限。我這里沒有使用第三方框架來做約束，而是使用最基本的按百分比設置frame严蓖。旋轉(zhuǎn)屏幕時通過調(diào)用本類- (void)resetFrame:(CGSize)size;方法來重設frame薄嫡。所以需要重設frame的控件在懶加載中設置frame氧急，調(diào)用時即刷新frame。

• 先看下初始化 對video的size設置是時始終用最小的邊來確定高度毫深，寬度與屏幕當前寬度相當

//初始化
- (instancetype)initWithFrame:(CGRect)frame andPath:(NSString*)path {
    self = [super initWithFrame:frame];
    if (self) {
        self.backgroundColor = [UIColor clearColor];
        self.path = path;
        CGFloat width = [UIScreen mainScreen].bounds.size.width;
        CGFloat height = [UIScreen mainScreen].bounds.size.height;
        self.videoHeight = height > width ? width * 0.6 : height * 0.6;
        self.videoWidth = [UIScreen mainScreen].bounds.size.width-2*kLrMargin;
        [self.layer addSublayer:self.playerlayer];
        [self addSubview:self.toolView];
    }
    return self;
}

• 屏幕旋轉(zhuǎn)時做一些事

//屏幕旋轉(zhuǎn)時觸發(fā) 這里寫在父類中
- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator {    
    [self.videoView resetFrame:size];
}

//旋轉(zhuǎn)屏幕重設frame
- (void)resetFrame:(CGSize)size {
    CGFloat width = size.width;
    CGFloat height = size.height;
    self.videoHeight = height > width ? width * 0.6 : height * 0.6;
    self.videoWidth = size.width - 2 * kLrMargin;
    if (self.isFullScreen) {
        //全屏時旋轉(zhuǎn)
        [self setPlayerWithPosition:CGPointZero andSize:size];
    } else {
        //普通旋轉(zhuǎn)
        [self setPlayerWithPosition:CGPointMake(kLrMargin, kTopMargin) andSize:CGSizeMake(self.videoWidth, self.videoHeight)];
        //刷新frame
        [self toolView];
        [self playSlider];
        [self progress];
    }    
}

• 懶加載刷新frame

//進度懶加載 調(diào)用時只刷新frame
- (UIProgressView *)progress {
    if (!_progress) {
        _progress = [[UIProgressView alloc] init];
        _progress.progress = 0;
    }
    _progress.frame = CGRectMake(2, self.playSlider.frame.size.height/2, self.playSlider.frame.size.width-2-2, kUIHeight);
    return _progress;
}

AVPlayer的基本操作

基本操作包括 播放 吩坝、暫停、 停止哑蔫、 播放指定位置钉寝、緩存進度
播放網(wǎng)絡地址時 在info.plist中添加 App Transport Security Settings字典中添加Allow Arbitrary Loads元素 值為YES

添加項.png

使用AVPlayer播放視頻就必須用到AVPlayerlayer用來顯示播放視圖凫碌。

//加載顯示層
- (AVPlayerLayer*)playerlayer {
    if (!_playerlayer) {
        _playerlayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
        _playerlayer.bounds = CGRectMake(0, 0, self.videoWidth, self.videoHeight);
        _playerlayer.anchorPoint = CGPointMake(0, 0);
        _playerlayer.position = CGPointMake(kLrMargin, kTopMargin);
        _playerlayer.backgroundColor = [UIColor blackColor].CGColor;
    }
    return _playerlayer;
}

//加載播放類
- (AVPlayer *)player {
    if (!_player) {
        _player = [AVPlayer playerWithURL:[self getUrlPath:self.path]];
        //kvo注冊
        [self addObservers];
    }
    return _player;
}

• 使用KVO對狀態(tài)和緩存進行檢測享扔，添加KVO時養(yǎng)成習慣寫好移除操作

//注冊kvo
- (void)addObservers{
    [self.player.currentItem addObserver:self forKeyPath:kItemStatus options:NSKeyValueObservingOptionNew context:nil];
    [self.player.currentItem addObserver:self forKeyPath:kItemLoadedTimeRanges options:NSKeyValueObservingOptionNew context:nil];
}

//移除kvo
- (void)dealloc {
    [self.player.currentItem removeObserver:self forKeyPath:kItemStatus];
    [self.player.currentItem removeObserver:self forKeyPath:kItemLoadedTimeRanges];
}

//kvo回調(diào)
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context {
    if ([keyPath isEqualToString:kItemStatus]) {
        AVPlayerItem *item = object;
        if (item.status == AVPlayerItemStatusReadyToPlay) {
            //準備播放
            [self readyToplayWithItem:item];
        }else if (item.status == AVPlayerItemStatusUnknown) {
            //播放失敗
           //這里寫個alertView提示下就行
        }else if (item.status == AVPlayerItemStatusFailed) {
            //播放失敗
            //同上
        }
    } else if ([keyPath isEqualToString:kItemLoadedTimeRanges]) {
        AVPlayerItem *item = object;
        [self getLoadedTimeRanges:item];
    }
}

• 基礎功能

//播放 暫停
- (void)play {
    if (self.playBtn.selected) {
        self.playBtn.selected = NO;
        [self.player pause];
    } else {
        self.playBtn.selected = YES;
        [self.player play];
        [self timerStar];
    }
}

//停止
- (void)stop {
    [self.player pause];
    [self.player seekToTime:CMTimeMake(0, 1)];
    self.playBtn.selected = NO;
}
//全屏
- (void)fullScreen {
    self.toolView.hidden = YES;
    self.isFullScreen = YES;
    self.backgroundColor = [UIColor blackColor];
    self.playerlayer.bounds = [UIScreen mainScreen].bounds;
    self.playerlayer.anchorPoint = CGPointMake(0, 0);
    self.playerlayer.position = CGPointMake(0, 0);
}

//播放指定位置
- (void)playCurrentVideo {
    self.playBtn.selected = YES;
    NSTimeInterval second = self.playSlider.value;
    [self.player.currentItem seekToTime:CMTimeMake(second,1)];
    [self.player play];
    [self timerStar];
}

• 具體操作
  • 包括格式化時間
  • 格式化路徑
  • 播放準備
  • 緩存計算
  • 觸摸關閉全屏
  • 設置video的大小位置

//設置video的frame
- (void)setPlayerWithPosition:(CGPoint)position andSize:(CGSize)size {
    self.playerlayer.anchorPoint = CGPointMake(0, 0);
    self.playerlayer.position = position;
    self.playerlayer.bounds = CGRectMake(0, 0, size.width, size.height);
}

//準備播放
- (void)readyToplayWithItem:(AVPlayerItem*)item {
    self.playBtn.enabled = YES;
    long long durationSecond = item.duration.value / item.duration.timescale;
    self.durationLab.text = [NSString stringWithFormat:@" / %@",[self getFormatDate:durationSecond]];
    self.playSlider.maximumValue = durationSecond;
    self.playSlider.minimumValue = 0;
    [self.playSlider addTarget:self action:@selector(playCurrentVideo) forControlEvents:UIControlEventValueChanged];

}

//獲得緩存
- (void)getLoadedTimeRanges:(AVPlayerItem*)item {
    NSValue *value = [item.loadedTimeRanges lastObject];
    CMTimeRange range = [value CMTimeRangeValue];
    long long cacheSecond = range.start.value/range.start.timescale + range.duration.value/range.duration.timescale;
    long long currentSecond = item.currentTime.value / item.currentTime.timescale;
    self.progress.progress = (currentSecond + cacheSecond) * 0.1;
  
}


//格式化時間
- (NSString*)getFormatDate:(NSTimeInterval)time {
    int seconds = (int)time % 60;
    int minutes = (int)(time / 60) % 60;
    int hours = (int)time / 3600;
    return [NSString stringWithFormat:@"%02d:%02d:%02d",hours,minutes,seconds];
}

//格式化url路徑
- (NSURL*)getUrlPath:(NSString*)path {
    NSURL *url;
    if ([self.path containsString:@"http"]) {
        url = [NSURL URLWithString:self.path];
    } else {
        url = [NSURL fileURLWithPath:self.path];
    }
    return url;
}

//開啟定時
- (void)timerStar {
    //定時回調(diào)
    __weak typeof(self) weakSelf = self;
    [self.player addPeriodicTimeObserverForInterval:CMTimeMake(1, 1) queue:NULL usingBlock:^(CMTime time) {
        long long current = weakSelf.player.currentItem.currentTime.value / weakSelf.player.currentItem.currentTime.timescale;
        weakSelf.playSlider.value = current;
        NSString *currentFormat = [weakSelf getFormatDate:current];
        weakSelf.currentTimeLab.text = [NSString stringWithFormat:@"%@",currentFormat];
    }];
    
}


//觸摸關閉全屏
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    
    if (self.isFullScreen) {
        self.toolView.hidden = NO;
        self.backgroundColor = [UIColor clearColor];
        [self setPlayerWithPosition:CGPointMake(kLrMargin, kTopMargin) andSize:CGSizeMake(self.videoWidth, self.videoHeight)];
        
        [self toolView];
        [self playSlider];
        [self progress];
        self.isFullScreen = NO;
    }
}

這樣一個簡單AVPlayer的封裝就做好了

Demo地址

https://github.com/gongxiaokai/AVPlayerDemo