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實例講解iOS音樂播放器DOUAudioStreamer用法

更新時間：2017年12月22日 08:31:09 投稿：laozhang

本篇文章給大家通過實例講解了iOS音樂播放器DOUAudioStreamer用法以及分享了實例代碼，一起學(xué)習(xí)參考下吧。

好久沒有寫東西了，最近加班太嚴(yán)重，今天抽空把用到的音樂播放器DOUAudioStreamer整理一下，由于項目之前用的是AVPlayer，這個也可以，但是就是要先緩存一段時間再播放，老板看了之后要求，要變緩存變播放（有網(wǎng)時，點擊播放按鈕就立刻播放），怎么不早說！怎么不早說！怎么不早說！還能怎樣？只能原諒他，繼續(xù)敲代碼。。。。。。（還是直接上代碼吧）

一、導(dǎo)入三方庫

pod 'DOUAudioStreamer'

或者GitHup下載地址：https://github.com/douban/DOUAudioStreamer

二、使用

1.從demo中獲取NAKPlaybackIndicatorView文件和MusicIndicator.h和MusicIndicator.m 文件，并導(dǎo)入頭文件

//音樂播放
#import "DOUAudioStreamer.h"
#import "NAKPlaybackIndicatorView.h"
#import "MusicIndicator.h"
#import "Track.h"

如圖：

2.創(chuàng)建一個Track類，用于音樂播放的URL存放

3.需要的界面.h中，添加DOUAudioStreamer，并用單利來初始化

+ (instancetype)sharedInstance ;
@property (nonatomic, strong) DOUAudioStreamer *streamer;

如圖：

在.m中實現(xiàn)：

static void *kStatusKVOKey = &kStatusKVOKey;
static void *kDurationKVOKey = &kDurationKVOKey;
static void *kBufferingRatioKVOKey = &kBufferingRatioKVOKey;
@property (strong, nonatomic) MusicIndicator *musicIndicator;
@property (nonatomic, strong) Track *audioTrack;
+ (instancetype)sharedInstance {
 static HYNEntertainmentController *_sharedMusicVC = nil;
 static dispatch_once_t onceToken;
 dispatch_once(&onceToken, ^{
  _sharedMusicVC = [[HYNEntertainmentController alloc] init];
  _sharedMusicVC.streamer = [[DOUAudioStreamer alloc] init];
 }); 
 return _sharedMusicVC;
}

播放按鈕事件

#pragma mark ---音樂播放按鈕
-(void)playMusicStart:(UIButton *)sender
{
  //通過按鈕獲取cell
  MusicCollectionViewCell *musicCell = (MusicCollectionViewCell *)[[sender superview] superview];
 if(_playFirst == 0){//_playFirst == 0首次播放，其他為暫停
  NSURL *url = [NSURL URLWithString:HttpImgUrl(musicCell.model.musicUrl)];
  _audioTrack.audioFileURL = url;
  @try {
   [self removeStreamerObserver];
  } @catch(id anException){ 
  }
  //在DOUAudioStreamer進行播放時，必須先置為nil
  _streamer = nil;
  _streamer = [DOUAudioStreamer streamerWithAudioFile:_audioTrack];
  [self addStreamerObserver];
  [_streamer play];
 }
 if([_streamer status] == DOUAudioStreamerPaused ||
  [_streamer status] == DOUAudioStreamerIdle){
  [sender setBackgroundImage:[UIImage imageNamed:@"music_play_icon"] forState:UIControlStateNormal];
  [_streamer play]; 
 }else{
  [sender setBackgroundImage:[UIImage imageNamed:@"music_stop_icon"] forState:UIControlStateNormal];
  [_streamer pause]; 
 }
 _playFirst++;
 
}

對添加監(jiān)聽

- (void)addStreamerObserver {
 [_streamer addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew context:kStatusKVOKey];
 [_streamer addObserver:self forKeyPath:@"duration" options:NSKeyValueObservingOptionNew context:kDurationKVOKey];
 [_streamer addObserver:self forKeyPath:@"bufferingRatio" options:NSKeyValueObservingOptionNew context:kBufferingRatioKVOKey]; 
}
/// 播放器銷毀
- (void)dealloc{
 if (_streamer !=nil) {
  [_streamer pause];
  [_streamer removeObserver:self forKeyPath:@"status" context:kStatusKVOKey];
  [_streamer removeObserver:self forKeyPath:@"duration" context:kDurationKVOKey];
  [_streamer removeObserver:self forKeyPath:@"bufferingRatio" context:kBufferingRatioKVOKey];
  
  _streamer =nil;
 } 
}
- (void)removeStreamerObserver {
 
 [_streamer removeObserver:self forKeyPath:@"status"];
 [_streamer removeObserver:self forKeyPath:@"duration"];
 [_streamer removeObserver:self forKeyPath:@"bufferingRatio"];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
 if (context == kStatusKVOKey) {
  [self performSelector:@selector(updateStatus)
      onThread:[NSThread mainThread]
     withObject:nil
    waitUntilDone:NO];
 } else if (context == kDurationKVOKey) {
  [self performSelector:@selector(updateSliderValue:)
      onThread:[NSThread mainThread]
     withObject:nil
    waitUntilDone:NO];
 } else if (context == kBufferingRatioKVOKey) {
  [self performSelector:@selector(updateBufferingStatus)
      onThread:[NSThread mainThread]
     withObject:nil
    waitUntilDone:NO];
 } else {
  [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
 }
}
- (void)updateSliderValue:(id)timer {
}
-(void)updateBufferingStatus
{ 
}
- (void)updateStatus {
 //self.musicIsPlaying = NO;
 _musicIndicator.state = NAKPlaybackIndicatorViewStateStopped;
 switch ([_streamer status]) {
  case DOUAudioStreamerPlaying:
   // self.musicIsPlaying = YES;
   _musicIndicator.state = NAKPlaybackIndicatorViewStatePlaying;
   break;
  case DOUAudioStreamerPaused:
   break;
  case DOUAudioStreamerIdle:
   break;
  case DOUAudioStreamerFinished:
   break;
  case DOUAudioStreamerBuffering:
   _musicIndicator.state = NAKPlaybackIndicatorViewStatePlaying;
   break;  
  case DOUAudioStreamerError:
   break;
 } 
}

這樣就能播放了。

鎖屏?xí)r的音樂顯示、拔出耳機后暫停播放、監(jiān)聽音頻打斷事件

-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
//接受遠程控制
[self becomeFirstResponder];
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
}
//這個不能忘記了
-(BOOL)canBecomeFirstResponder{
return YES;
}
- (void)viewDidLoad {
[super viewDidLoad];
//音樂播放器
[self initPlayer];
}
#pragma mark =========================音樂播放==============================
//音樂播放器
-(void)initPlayer
{
_audioTrack = [[Track alloc] init];
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setActive:YES error:nil];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
//讓app支持接受遠程控制事件
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
//添加通知，拔出耳機后暫停播放
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(routeChange:) name:AVAudioSessionRouteChangeNotification object:nil];
// 監(jiān)聽音頻打斷事件
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(audioSessionWasInterrupted:) name:AVAudioSessionInterruptionNotification object:session];
}
// 監(jiān)聽音頻打斷事件
- (void)audioSessionWasInterrupted:(NSNotification *)notification
{
 //被打斷時
if (AVAudioSessionInterruptionTypeBegan == [notification.userInfo[AVAudioSessionInterruptionTypeKey] intValue])
{
 
[_streamer pause];
UIButton *btn = (UIButton *)[self.view viewWithTag:2000];
[btn setBackgroundImage:[UIImage imageNamed:@"music_stop_icon"] forState:UIControlStateNormal];
}
else if (AVAudioSessionInterruptionTypeEnded == [notification.userInfo[AVAudioSessionInterruptionTypeKey] intValue])
{
}
}
// 拔出耳機后暫停播放
-(void)routeChange:(NSNotification *)notification{
NSDictionary *dic=notification.userInfo;
int changeReason= [dic[AVAudioSessionRouteChangeReasonKey] intValue];
//等于AVAudioSessionRouteChangeReasonOldDeviceUnavailable表示舊輸出不可用
if (changeReason==AVAudioSessionRouteChangeReasonOldDeviceUnavailable) {
AVAudioSessionRouteDescription *routeDescription=dic[AVAudioSessionRouteChangePreviousRouteKey];
AVAudioSessionPortDescription *portDescription= [routeDescription.outputs firstObject];
//原設(shè)備為耳機則暫停
if ([portDescription.portType isEqualToString:@"Headphones"]) {
[_streamer pause];
UIButton *btn = (UIButton *)[self.view viewWithTag:2000];
[btn setBackgroundImage:[UIImage imageNamed:@"music_stop_icon"] forState:UIControlStateNormal];
}
}
}
//鎖屏?xí)r音樂顯示(這個方法可以在點擊播放時，調(diào)用傳值)
- (void)setupLockScreenInfoWithSing:(NSString *)sign WithSigner:(NSString *)signer WithImage:(UIImage *)image
{
// 1.獲取鎖屏中心
MPNowPlayingInfoCenter *playingInfoCenter = [MPNowPlayingInfoCenter defaultCenter];
//初始化一個存放音樂信息的字典
NSMutableDictionary *playingInfoDict = [NSMutableDictionary dictionary];
// 2、設(shè)置歌曲名
if (sign) {
[playingInfoDict setObject:sign forKey:MPMediaItemPropertyAlbumTitle];
}
// 設(shè)置歌手名
if (signer) {
[playingInfoDict setObject:signer forKey:MPMediaItemPropertyArtist];
}
// 3設(shè)置封面的圖片
//UIImage *image = [self getMusicImageWithMusicId:self.currentModel];
if (image) {
MPMediaItemArtwork *artwork = [[MPMediaItemArtwork alloc] initWithImage:image];
[playingInfoDict setObject:artwork forKey:MPMediaItemPropertyArtwork];
}
// 4設(shè)置歌曲的總時長
//[playingInfoDict setObject:self.currentModel.detailDuration forKey:MPMediaItemPropertyPlaybackDuration];
//音樂信息賦值給獲取鎖屏中心的nowPlayingInfo屬性
playingInfoCenter.nowPlayingInfo = playingInfoDict;
// 5.開啟遠程交互
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
}
//鎖屏?xí)r操作
- (void)remoteControlReceivedWithEvent:(UIEvent *)receivedEvent {
if (receivedEvent.type == UIEventTypeRemoteControl) {
UIButton *sender = (UIButton *)[self.view viewWithTag:2000];
switch (receivedEvent.subtype) {//判斷是否為遠程控制
case UIEventSubtypeRemoteControlPause:
[[HYNEntertainmentController sharedInstance].streamer pause];
[sender setBackgroundImage:[UIImage imageNamed:@"music_stop_icon"] forState:UIControlStateNormal];
break;
case UIEventSubtypeRemoteControlStop:
break;
case UIEventSubtypeRemoteControlPlay:
[[HYNEntertainmentController sharedInstance].streamer play];
[sender setBackgroundImage:[UIImage imageNamed:@"music_play_icon"] forState:UIControlStateNormal];
break;
case UIEventSubtypeRemoteControlTogglePlayPause:
break;
case UIEventSubtypeRemoteControlNextTrack:
break;
case UIEventSubtypeRemoteControlPreviousTrack:
break;
default:
break;
}
}
}

整體圖片：