AVPlayer做的一个小视频播放器，包含快进快退音量调节等基本

作者: CGPointZero | 来源:发表于2015-12-08 09:13 被阅读2432次

用AVFoundation的AVPlayer做的一个小视频播放器，包含左滑快退，右滑快进，上滑音量加，下滑音量减等基本功能。
支持HLS协议和HTTP协议的视频。
<pre>#import "AppDelegate.h"

import "PlayViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
PlayViewController *player=[[PlayViewController alloc]init];

//HLS协议视屏
//http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8
//HTTP视频
//http://www.modrails.com/videos/passenger_nginx.mov

player.urlString=@"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8";
player.title=@"播放测试";
self.window.rootViewController=player;

return YES;
}

@end</pre>
<pre>#import "PlayViewController.h"

import <AVFoundation/AVFoundation.h>

import <MediaPlayer/MediaPlayer.h>

import "Tools.h"

import "FGGReachability.h"

@interface PlayViewController ()
@property(nonatomic,strong)AVPlayer *player;
@property(nonatomic,strong)AVPlayerItem *item;
@property(nonatomic,strong)NSString *totalTime;
@property(nonatomic,assign)BOOL isPlaying;
@property(nonatomic,strong)id timeObserver;
@property(nonatomic,strong)UIProgressView *progress;

@property(nonatomic,strong)UISlider *slider; //进度slider
@property(nonatomic,strong)UISlider *volumeSlider;//音量slider

@property(nonatomic,strong)UIButton *playBtn;
@property(nonatomic,strong)UILabel *timeLabel;
@property(nonatomic,strong)id playbackTimeObserver;

//快进
@property(nonatomic,strong)UIImageView *forward;
//快退
@property(nonatomic,strong)UIImageView *backward;

@property(nonatomic,strong)UILabel *volumeLabel;//调节音量时显示当前音量
@property(nonatomic,strong)UIButton *shareBtn;//分享

//加载指示器
@property(nonatomic,strong)UIActivityIndicatorView *indicator;

//判断网络
@property(nonatomic,strong)Reachability *reach;

@end

define kWidth ([UIScreen mainScreen].bounds.size.width)

define kHeight ([UIScreen mainScreen].bounds.size.height)

@implementation PlayViewController

-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
// 隐藏导航栏
self.navigationController.navigationBarHidden=YES;
}
-(void)showIndicator
{
_indicator=[[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
_indicator.center=CGPointMake(kHeight/2, kWidth/2);
[self.view addSubview:_indicator];
[_indicator startAnimating];
}
//隐藏状态栏

(BOOL)prefersStatusBarHidden
{
return YES;
}
(void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor=[UIColor blackColor];
//显示网络记载指示器
[self showIndicator];
NSLog(@"\n-->%@\n-->%@",self.urlString,self.videoTitle);

//通知中心注册一条监听网络状态的通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(estimateNetworkStatus) name:kReachabilityChangedNotification object:nil];
_reach=[Reachability reachabilityForInternetConnection];
[_reach startNotifier];

[self estimateNetworkStatus];

_item=[[AVPlayerItem alloc] initWithURL:[NSURL URLWithString:self.urlString]];
_player=[[AVPlayer alloc]initWithPlayerItem:_item];

[_item addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew context:nil];// 监听status属性
[_item addObserver:self forKeyPath:@"loadedTimeRanges" options:NSKeyValueObservingOptionNew context:nil];// 监听loadedTimeRanges属性

[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(moviePlayDidEnd:) name:AVPlayerItemDidPlayToEndTimeNotification object:_item];

AVPlayerLayer *layer=[AVPlayerLayer playerLayerWithPlayer:_player];
layer.videoGravity=AVLayerVideoGravityResizeAspect;
layer.frame=CGRectMake(0, 0, kHeight, kWidth);
layer.backgroundColor=[UIColor clearColor].CGColor;

[self.view.layer addSublayer:layer];

// 标题
[self createTitleView];
// 界面
[self createUI];

//旋转视图
//self.view.transform=CGAffineTransformMakeRotation(3*M_PI_2);
//layer.transform=CATransform3DMakeRotation(M_PI/2, 0, 0, 1);
self.view.layer.transform=CATransform3DMakeRotation(3*M_PI_2, 0, 0, 1);

[self addGestures];

}
/**
* 添加手势
*/
-(void)addGestures
{
//添加一个手势隐藏与显示进度条
UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(shiftStatus)];
[self.view addGestureRecognizer:tap];

//增加音量的手势
UISwipeGestureRecognizer \*increaseGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(increaseVolume:)];
increaseGesture.direction=UISwipeGestureRecognizerDirectionUp;
[self.view addGestureRecognizer:increaseGesture];

//减小音量的手势
UISwipeGestureRecognizer \*decreaseGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(decreaseVolume:)];
decreaseGesture.direction=UISwipeGestureRecognizerDirectionDown;
[self.view addGestureRecognizer:decreaseGesture];

//快进
UISwipeGestureRecognizer \*stepForward=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(stepForward10Seconds)];
stepForward.direction=UISwipeGestureRecognizerDirectionRight;
//快退
UISwipeGestureRecognizer \*stepBackward=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(stepBackward10Senconds)];
stepBackward.direction=UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:stepForward];
[self.view addGestureRecognizer:stepBackward];

}
/**
* 评估网络状态
*/
-(void)estimateNetworkStatus
{
FGGNetWorkStatus status=[FGGReachability networkStatus];
if(status==FGGNetWorkStatusNotReachable)
{
UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"提示"
message:@"当前网络不可用"
delegate:nil
cancelButtonTitle:@"知道了"
otherButtonTitles:nil, nil];
[alert show];
}
else if(status!=FGGNetWorkStatusWifi)
{
UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"提示"
message:@"非Wifi环境播放视屏会耗费流量！"
delegate:nil
cancelButtonTitle:@"知道了"
otherButtonTitles:nil, nil];
[alert show];
}
}
/**
* 向上滑动增加音量
*
* @param sender 滑动手势
*/
-(void)increaseVolume:(UISwipeGestureRecognizer *)sender
{
if(sender.direction==UISwipeGestureRecognizerDirectionUp)
{
if(_player.volume>=1.0)
return;
_player.volume+=0.1;
// NSLog(@"+++++音量:%f++++++",10*_player.volume);

    __weak PlayViewController \*weakSelf=self;
    _volumeLabel.text=[NSString stringWithFormat:@"音量:%d",(int)ceilf(_player.volume\*10)];
    [UIView animateWithDuration:0.2 animations:^{
        weakSelf.volumeLabel.alpha=1.0;
    } completion:^(BOOL finished) {
        [UIView animateWithDuration:0.2 animations:^{
            weakSelf.volumeLabel.alpha=0.0;
        }];
    }];
}

}
/**
* 向下滑动减小音量
*
* @param sender 滑动手势对象
*/
-(void)decreaseVolume:(UISwipeGestureRecognizer *)sender
{
if(sender.direction==UISwipeGestureRecognizerDirectionDown)
{
if(_player.volume<=0.0)
return;
_player.volume-=0.1;
// NSLog(@"------音量:%f------",10*_player.volume);

    __weak PlayViewController \*weakSelf=self;
    _volumeLabel.text=[NSString stringWithFormat:@"音量:%d",(int)ceilf(_player.volume\*10)];
    [UIView animateWithDuration:0.3 animations:^{
        weakSelf.volumeLabel.alpha=1.0;
    } completion:^(BOOL finished) {
        [UIView animateWithDuration:0.3 animations:^{
            weakSelf.volumeLabel.alpha=0.0;
        }];
    }];
}

}

pragma mark -

pragma mark - 快退快进

//@qustion:seekToTime和seekToTime:toleranceBefore:toleranceAfter的区别是什么？
//快进10秒
-(void)stepForward10Seconds
{
if(_isPlaying)
{
[_item seekToTime:CMTimeMakeWithSeconds(_item.currentTime.value/_item.currentTime.timescale+10, _item.currentTime.timescale) toleranceBefore:CMTimeMake(1, _item.currentTime.timescale) toleranceAfter:CMTimeMake(1, _item.currentTime.timescale)];
__weak typeof(self) weakSelf=self;
[UIView animateWithDuration:0.3 animations:^{
weakSelf.forward.alpha=1.0;
}completion:^(BOOL finished) {
[UIView animateWithDuration:0.3 animations:^{
weakSelf.forward.alpha=0.0;
}];
}];
}
}
//快退10秒
-(void)stepBackward10Senconds
{
if(_isPlaying)
{
[_item seekToTime:CMTimeMakeWithSeconds(_item.currentTime.value/_item.currentTime.timescale-10, _item.currentTime.timescale)];
__weak typeof(self) weakSelf=self;
[UIView animateWithDuration:0.3 animations:^{
weakSelf.backward.alpha=1.0;
}completion:^(BOOL finished) {
[UIView animateWithDuration:0.3 animations:^{
weakSelf.backward.alpha=0.0;
}];
}];
}
}
//界面
-(void)createUI
{
_playBtn=[[UIButton alloc]initWithFrame:CGRectMake(50, 20, 60, 40)];
[_playBtn setTitle:@"Play" forState:UIControlStateNormal];
[_playBtn setTitle:@"Pause" forState:UIControlStateSelected];
[_playBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
_playBtn.titleLabel.font=[UIFont boldSystemFontOfSize:16];
[_playBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateSelected];
[_playBtn addTarget:self action:@selector(playAction:) forControlEvents:UIControlEventTouchUpInside];
_playBtn.backgroundColor=[UIColor clearColor];
[self.view addSubview:_playBtn];
_progress=[[UIProgressView alloc]initWithFrame:CGRectMake(110, 41, kHeight-230, 2)];
// 设置轨道颜色，将要走到的路径的颜色
_progress.trackTintColor=[UIColor whiteColor];
// 设置进度颜色,已经走过的路径
_progress.progressTintColor=[UIColor blueColor];

_slider=[[UISlider alloc]initWithFrame:CGRectMake(110, 26,kHeight-230, 31)];
[_slider setThumbImage:[UIImage imageNamed:@"thumb"] forState:UIControlStateNormal];
_slider.minimumTrackTintColor=[UIColor blueColor];//设置左边颜色
_slider.maximumTrackTintColor=[UIColor clearColor];//设置右边颜色
_slider.continuous=NO;
[_slider addTarget:self action:@selector(sliderDidSlided:) forControlEvents:UIControlEventValueChanged];


[self.view addSubview:_progress];
[self.view addSubview:_slider];

_timeLabel=[Tools createLabelWithFrame:CGRectMake(kHeight-130, 30, 110, 20) text:nil textColor:[UIColor whiteColor] textAligment:NSTextAlignmentRight andBgColor:[UIColor clearColor] font:[UIFont systemFontOfSize:14]];
_timeLabel.text=@"--:--/--:--";
[self.view addSubview:_timeLabel];

//    音量label
_volumeLabel=[[UILabel alloc]initWithFrame:CGRectMake(kHeight-100, kWidth/2-20, 80, 40)];
_volumeLabel.text=[NSString stringWithFormat:@"音量:%d",(int)ceil(_player.volume)\*10];
_volumeLabel.alpha=0.0;
_volumeLabel.backgroundColor=[UIColor clearColor];
_volumeLabel.font=[UIFont boldSystemFontOfSize:22];
_volumeLabel.textColor=[UIColor whiteColor];
[self.view addSubview:_volumeLabel];

//快进
_forward=[[UIImageView alloc]initWithFrame:CGRectMake(kHeight-164, kWidth/2-32, 64, 64)];
_forward.image=[UIImage imageNamed:@"stepforward"];
[self.view addSubview:_forward];
_forward.alpha=0.0;

//快退
_backward=[[UIImageView alloc]initWithFrame:CGRectMake(100, kWidth/2-32, 64, 64)];
_backward.image=[UIImage imageNamed:@"stepbackward"];
[self.view addSubview:_backward];
_backward.alpha=0.0;

}

//标题视图
-(void)createTitleView
{
UILabel *titleLabel=[Tools createLabelWithFrame:CGRectMake(50, 10, kHeight-100, 20) text:self.videoTitle textColor:[UIColor whiteColor] textAligment:NSTextAlignmentCenter andBgColor:[UIColor clearColor] font:[UIFont boldSystemFontOfSize:12]];
[self.view addSubview:titleLabel];
titleLabel.tag=111;

//    返回按钮
UIButton \*backBtn=[[UIButton alloc]initWithFrame:CGRectMake(10, 20, 40, 40)];
[backBtn setBackgroundImage:[UIImage imageNamed:@"back"] forState:UIControlStateNormal];
[backBtn addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:backBtn];

}
//返回
-(void)backAction
{
[self.navigationController popViewControllerAnimated:YES];
[self dismissViewControllerAnimated:YES completion:nil];
}

/**
* 滑动进度条时执行该方法
*
* @param sender slider对象
*/
-(void)sliderDidSlided:(UISlider *)sender
{
if(_player.status==AVPlayerStatusReadyToPlay)
{
CGFloat value=sender.value;
[_item seekToTime:CMTimeMake(value, 1)];
}
}
//隐藏上方的条条
-(void)hideStatusLabels
{
__weak PlayViewController *weakSelf=self;

if(!_isPlaying)
    return;
UILabel \*label=(UILabel \*)[self.view viewWithTag:111];
[UIView animateWithDuration:0.5 animations:^{

// 自动播放视频
[weakSelf.player play];
weakSelf.isPlaying=YES;

    label.alpha=0;
    weakSelf.timeLabel.alpha=0;
    weakSelf.slider.alpha=0;
    weakSelf.progress.alpha=0;
    weakSelf.playBtn.alpha=0;
} completion:^(BOOL finished) {
    
}];

}
//显示上方的条条
-(void)showStatusLabels
{
__weak PlayViewController *weakSelf=self;

UILabel \*label=(UILabel \*)[self.view viewWithTag:111];

[UIView animateWithDuration:0.5 animations:^{
    
    weakSelf.timeLabel.alpha=1;
    weakSelf.slider.alpha=1;
    weakSelf.progress.alpha=1;
    weakSelf.playBtn.alpha=1;
    label.alpha=1;
} completion:^(BOOL finished) {

}];

}
//手势点击屏幕触发的方法
-(void)shiftStatus
{
if(_playBtn.alpha==0)
{
// 显示上方条条
[self performSelector:@selector(showStatusLabels) withObject:nil];
// 6秒后自动隐藏上方条条
[self performSelector:@selector(hideStatusLabels) withObject:nil afterDelay:6];
}
else
// 隐藏条条
[self performSelector:@selector(hideStatusLabels) withObject:nil];

}
/**
* 点击播放按钮时执行的方法
*
* @param sender 播放按钮
*/
-(void)playAction:(UIButton *)sender
{
sender.selected=!sender.isSelected;
if(_isPlaying)
{
[_player pause];
}
else
{
[_player play];
}
_isPlaying=!_isPlaying;
}
/**
* 收到播放完毕的通知时执行该方法
*
* @param notification 通知
*/

(void)moviePlayDidEnd:(NSNotification *)notification
{
NSLog(@"Play end");
[_player seekToTime:kCMTimeZero completionHandler:^(BOOL finished)
{
[self updateVideoSlider:0.0];
[_playBtn setTitle:@"Play" forState:UIControlStateNormal];
}];
}
(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{

AVPlayerItem *playerItem = (AVPlayerItem *)object;

if ([keyPath isEqualToString:@"status"])
{
```
  if ([playerItem status] == AVPlayerStatusReadyToPlay)
  {
    
      NSLog(@"AVPlayerStatusReadyToPlay");
```

// 开始播放视频
[_player play];
// 播放状态置为YES
_isPlaying=YES;
_playBtn.selected=YES;
// 隐藏上方的条条
[self hideStatusLabels];
// 隐藏加载指示器
[_indicator stopAnimating];
[_indicator removeFromSuperview];

        CMTime duration = _item.duration;// 获取视频总长度

        CGFloat totalSecond = playerItem.duration.value / playerItem.duration.timescale;// 转换成秒
      
        _totalTime = [self convertTime:totalSecond];// 转换成播放时间
      
        [self customVideoSlider:duration];
      
        NSLog(@"movie total duration:%f",CMTimeGetSeconds(duration));
     
        [self monitoringPlayback:_item];// 监听播放状态
    
    }
    else if ([playerItem status] == AVPlayerStatusFailed)
    {
        //移除网络加载指示器
        [_indicator stopAnimating];
        [_indicator removeFromSuperview];
        //NSLog(@"AVPlayerStatusFailed");
        UIAlertView \*alert=[[UIAlertView alloc]initWithTitle:@"提示" message:@"加载失败" delegate:nil cancelButtonTitle:nil otherButtonTitles:nil, nil];
        [alert show];
        [alert dismissWithClickedButtonIndex:0 animated:YES];
    }

} else if ([keyPath isEqualToString:@"loadedTimeRanges"])
{
 
    NSTimeInterval timeInterval = [self availableDuration];// 计算缓冲进度

// NSLog(@"Time Interval:%f",timeInterval);

    CMTime duration = _item.duration;
 
    CGFloat totalDuration = CMTimeGetSeconds(duration);

// 设置进度处理器的进度值
[_progress setProgress:timeInterval / totalDuration animated:YES];

}
/**
* 获取缓冲总进度
*
* @return 缓冲总进度
*/

(NSTimeInterval)availableDuration
{

NSArray *loadedTimeRanges = [[_player currentItem] loadedTimeRanges];

CMTimeRange timeRange = [loadedTimeRanges.firstObject CMTimeRangeValue];// 获取缓冲区域

float startSeconds = CMTimeGetSeconds(timeRange.start);

float durationSeconds = CMTimeGetSeconds(timeRange.duration);

NSTimeInterval result = startSeconds + durationSeconds;// 计算缓冲总进度

return result;
}
/**
* 将视频播放的当前时间和总时间，格式化显示在界面上
*
* @param second 播放器的当前时间
*
* @return 格式化后的显示时间
*/
(NSString *)convertTime:(CGFloat)second
{

NSDate *d = [NSDate dateWithTimeIntervalSince1970:second];

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

if (second/3600 >= 1)
{
```
  [formatter setDateFormat:@"HH:mm:ss"];
```
}
else
{
```
  [formatter setDateFormat:@"mm:ss"];
```
}
NSString *showtimeNew = [formatter stringFromDate:d];

return showtimeNew;
}
(void)monitoringPlayback:(AVPlayerItem *)playerItem
{
__weak PlayViewController *weakSelf=self;

self.playbackTimeObserver = [_player addPeriodicTimeObserverForInterval:CMTimeMake(1, 1) queue:NULL usingBlock:^(CMTime time)
{
CGFloat currentSecond = playerItem.currentTime.value/playerItem.currentTime.timescale;// 计算当前在第几秒
[weakSelf updateVideoSlider:currentSecond];
NSString *timeString = [weakSelf convertTime:currentSecond];
weakSelf.timeLabel.text = [NSString stringWithFormat:@"%@/%@",timeString,weakSelf.totalTime];
}];
}
(void)customVideoSlider:(CMTime)duration
{

_slider.maximumValue = CMTimeGetSeconds(duration);

UIGraphicsBeginImageContextWithOptions((CGSize){ 1, 1 }, NO, 0.0f);

UIImage *transparentImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[_slider setMinimumTrackImage:transparentImage forState:UIControlStateNormal];
[_slider setMaximumTrackImage:transparentImage forState:UIControlStateNormal];
}
/**
* 更新滑块的值
*
* @param currentSecond 当前的播放时间
*/
(void)updateVideoSlider:(CGFloat)currentSecond
{
[_slider setValue:currentSecond animated:YES];
}
/**
* 视图即将消失时移除观察者对象，注销通知，如果播放器在播放，让其暂停，让播放器指向nil
*
* @param animated 动画效果
*/
(void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];

[_item removeObserver:self forKeyPath:@"status" context:nil];
[_item removeObserver:self forKeyPath:@"loadedTimeRanges" context:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:AVPlayerItemDidPlayToEndTimeNotification object:_item];
[_player removeTimeObserver:self.playbackTimeObserver];
if(_isPlaying)
{
[_player pause];
_player=nil;
}
}

@end</pre>
<pre>附上GitHub代码地址：AVFoundationPlayer</pre>

网友评论

Mister志伟:AVPlayer 的
-(void)seekToTime
方法当time时间大小小于一秒的时候，AVPlayer就不会作同步的处理（如：快进，后退等），会依然保留在原来的位置。
AVPlayerDemo里面，通过Slider去拖动时，也是当经过时间大与1的时候才会进行一次同步。
想请问一下怎么让AVPlayer 快进/后退 1秒以下的时间？
冉俊:rtmp支持吗？
无心可活:牛
郑钦洪_:最好写的时候可以贴一下写的思路和一些图片和相关参考的资料代码地址等这样对读者来说比较好理解和接受
CGPointZero:@郑钦洪_ 最下面附上了GitHub代码地址，可以下载编译

AVPlayer做的一个小视频播放器，包含快进快退音量调节等基本

import "PlayViewController.h"

import <AVFoundation/AVFoundation.h>

import <MediaPlayer/MediaPlayer.h>

import "Tools.h"

import "FGGReachability.h"

define kWidth ([UIScreen mainScreen].bounds.size.width)

define kHeight ([UIScreen mainScreen].bounds.size.height)

pragma mark -

pragma mark - 快退快进

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