好久没有写东西了，最近加班太严重，今天抽空把用到的音乐播放器douaudiostreamer整理一下，由于项目之前用的是avplayer，这个也可以，但是就是要先缓存一段时间再播放，老板看了之后要求，要变缓存变播放（有网时，点击播放按钮就立刻播放），怎么不早说！怎么不早说！怎么不早说！还能怎样？只能原谅他，继续敲代码。。。。。。（还是直接上代码吧）
一、导入三方库
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pod 'douaudiostreamer' |
或者githup下载地址：https://github.com/douban/douaudiostreamer
二、使用
1.从demo中获取nakplaybackindicatorview文件和musicindicator.h和musicindicator.m 文件，并导入头文件
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//音乐播放<br>#import "douaudiostreamer.h"<br>#import "nakplaybackindicatorview.h"<br>#import "musicindicator.h"<br>#import "track.h" |
如图：
2.创建一个track类，用于音乐播放的url存放
3.需要的界面.h中，添加douaudiostreamer，并用单利来初始化
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+ (instancetype)sharedinstance ;@property (nonatomic, strong) douaudiostreamer *streamer; |
如图：
在.m中实现：
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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;} |
播放按钮事件
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#pragma mark ---音乐播放按钮-(void)playmusicstart:(uibutton *)sender{ //通过按钮获取cell musiccollectionviewcell *musiccell = (musiccollectionviewcell *)[[sender superview] superview]; if(_playfirst == 0){//_playfirst == 0首次播放，其他为暂停 nsurl *url = [nsurl urlwithstring:httpimgurl(musiccell.model.musicurl)]; _audiotrack.audiofileurl = url; @try { [self removestreamerobserver]; } @catch(id anexception){ } //在douaudiostreamer进行播放时，必须先置为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++; } |
对添加监听
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- (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]; }/// 播放器销毁- (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; } } |
这样就能播放了。
锁屏时的音乐显示、拔出耳机后暂停播放、监听音频打断事件
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-(void)viewwillappear:(bool)animated{[super viewwillappear:animated];//接受远程控制[self becomefirstresponder];[[uiapplication sharedapplication] beginreceivingremotecontrolevents];}//这个不能忘记了-(bool)canbecomefirstresponder{return yes;}- (void)viewdidload {[super viewdidload];//音乐播放器[self initplayer];}#pragma mark =========================音乐播放==============================//音乐播放器-(void)initplayer{_audiotrack = [[track alloc] init];avaudiosession *session = [avaudiosession sharedinstance];[session setactive:yes error:nil];[session setcategory:avaudiosessioncategoryplayback error:nil];//让app支持接受远程控制事件[[uiapplication sharedapplication] beginreceivingremotecontrolevents];//添加通知，拔出耳机后暂停播放[[nsnotificationcenter defaultcenter] addobserver:self selector:@selector(routechange:) name:avaudiosessionroutechangenotification object:nil];// 监听音频打断事件[[nsnotificationcenter defaultcenter] addobserver:self selector:@selector(audiosessionwasinterrupted:) name:avaudiosessioninterruptionnotification object:session];}// 监听音频打断事件- (void)audiosessionwasinterrupted:(nsnotification *)notification{ //被打断时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]){}}// 拔出耳机后暂停播放-(void)routechange:(nsnotification *)notification{nsdictionary *dic=notification.userinfo;int changereason= [dic[avaudiosessionroutechangereasonkey] intvalue];//等于avaudiosessionroutechangereasonolddeviceunavailable表示旧输出不可用if (changereason==avaudiosessionroutechangereasonolddeviceunavailable) {avaudiosessionroutedescription *routedescription=dic[avaudiosessionroutechangepreviousroutekey];avaudiosessionportdescription *portdescription= [routedescription.outputs firstobject];//原设备为耳机则暂停if ([portdescription.porttype isequaltostring:@"headphones"]) {[_streamer pause];uibutton *btn = (uibutton *)[self.view viewwithtag:2000];[btn setbackgroundimage:[uiimage imagenamed:@"music_stop_icon"] forstate:uicontrolstatenormal];}}}//锁屏时音乐显示(这个方法可以在点击播放时，调用传值)- (void)setuplockscreeninfowithsing:(nsstring *)sign withsigner:(nsstring *)signer withimage:(uiimage *)image{// 1.获取锁屏中心mpnowplayinginfocenter *playinginfocenter = [mpnowplayinginfocenter defaultcenter];//初始化一个存放音乐信息的字典nsmutabledictionary *playinginfodict = [nsmutabledictionary dictionary];// 2、设置歌曲名if (sign) {[playinginfodict setobject:sign forkey:mpmediaitempropertyalbumtitle];}// 设置歌手名if (signer) {[playinginfodict setobject:signer forkey:mpmediaitempropertyartist];}// 3设置封面的图片//uiimage *image = [self getmusicimagewithmusicid:self.currentmodel];if (image) {mpmediaitemartwork *artwork = [[mpmediaitemartwork alloc] initwithimage:image];[playinginfodict setobject:artwork forkey:mpmediaitempropertyartwork];}// 4设置歌曲的总时长//[playinginfodict setobject:self.currentmodel.detailduration forkey:mpmediaitempropertyplaybackduration];//音乐信息赋值给获取锁屏中心的nowplayinginfo属性playinginfocenter.nowplayinginfo = playinginfodict;// 5.开启远程交互[[uiapplication sharedapplication] beginreceivingremotecontrolevents];}//锁屏时操作- (void)remotecontrolreceivedwithevent:(uievent *)receivedevent {if (receivedevent.type == uieventtyperemotecontrol) {uibutton *sender = (uibutton *)[self.view viewwithtag:2000];switch (receivedevent.subtype) {//判断是否为远程控制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;}}} |
整体图片：
上图为未播放
上图为播放中
上图为锁屏时状态
应该没有什么要添加的了，暂时告一段落，有不足之处，可以在下方的留言区讨论，感谢对服务器之家的支持。
原文链接：https://my.oschina.net/huangyn/blog/1593368
