// 重写父类成为响应者方法 为添加到音频中心后台播放做准备

- (BOOL)canBecomeFirstResponder {

returnYES;

}

#pragma mark 重写父类方法，接受外部事件的处理 为添加到音频中心后台播放做准备

- (void) remoteControlReceivedWithEvent: (UIEvent *) receivedEvent {

if (receivedEvent.type ==UIEventTypeRemoteControl) {

switch (receivedEvent.subtype) {//得到事件类型

caseUIEventSubtypeRemoteControlTogglePlayPause://暂停 ios6

self.play =YES;//调用你所在项目的暂停按钮的响应方法下面的也是如此

[selfplayAction];

break;

caseUIEventSubtypeRemoteControlPreviousTrack: //上一首

[selflastButtonAction];

break;

caseUIEventSubtypeRemoteControlNextTrack://下一首

[selfnextButtonAction];

break;

caseUIEventSubtypeRemoteControlPlay://播放

self.play =NO;//调用你所在项目的暂停按钮的响应方法下面的也是如此

[selfplayAction];

break;

caseUIEventSubtypeRemoteControlPause://暂停 ios7

self.play =YES;//调用你所在项目的暂停按钮的响应方法下面的也是如此

[selfplayAction];

break;

default:

break;

}

}

}

//Now Playing Center可以在锁屏界面展示音乐的信息，也达到增强用户体验的作用。

#pragma mark 传递信息到锁屏状态下此方法在播放歌曲与切换歌曲时调用即可

- (void)configNowPlayingCenter:(YiPinXiangXiBody *)body {

NSMutableDictionary * info = [NSMutableDictionarydictionary];

//音乐的标题

[info setObject:body.titleforKey:MPMediaItemPropertyTitle];

//音乐的艺术家

[info setObject:body.columnNameforKey:MPMediaItemPropertyArtist];

//音乐的封面

UIImage *image = [[UIImagealloc]initWithData:[NSDatadataWithContentsOfURL:[NSURLURLWithString:  [NSStringstringWithFormat:@"%@%@",URLADDRESS,body.cover]]]];

MPMediaItemArtwork * artwork = [[MPMediaItemArtworkalloc]initWithImage:image];

[info setObject:artworkforKey:MPMediaItemPropertyArtwork];

//完成设置

[[MPNowPlayingInfoCenterdefaultCenter]setNowPlayingInfo:info];

// NSLog(@"----%lld--------%f------",self.player.currentTime.value,self.totalTime);

}

#pragma mark 音频缓存和播放进度提示

- (void)playProgressAction{

FSStreamPosition cur =self.audioStream.currentTimePlayed;

self.playbackTime =cur.playbackTimeInSeconds/1;

double minutesElapsed =floor(fmod(self.playbackTime/60.0,60.0));

double secondsElapsed =floor(fmod(self.playbackTime,60.0));

self.nowTimeLabel.text = [NSStringstringWithFormat:@"%02.0f:%02.0f",minutesElapsed, secondsElapsed];

self.sliderProgress.value = cur.position;//播放进度

// 获取视频的总时长

self.totalTime =self.playbackTime/cur.position;

NSLog(@"-=-=-=-=-=%f",self.totalTime);

if ([[NSStringstringWithFormat:@"%f",self.totalTime]isEqualToString:@"nan"]) {

self.totalTimeLabel.text =@"00:00";

}else{

double minutesElapsed1 =floor(fmod(self.totalTime/60.0,60.0));

double secondsElapsed1 =floor(fmod(self.totalTime,60.0));

self.totalTimeLabel.text = [NSStringstringWithFormat:@"%02.0f:%02.0f",minutesElapsed1, secondsElapsed1];

}

float  prebuffer = (float)self.audioStream.prebufferedByteCount;

float contentlength = (float)self.audioStream.contentLength;

if (contentlength>0) {

self.playerProgress.progress = prebuffer /contentlength;//缓存进度

}

/// 更新airPlay后台和锁屏播放进度====================

NSMutableDictionary *dict = [NSMutableDictionarydictionaryWithDictionary:[[MPNowPlayingInfoCenterdefaultCenter]nowPlayingInfo]];

[dict setObject:@(self.playbackTime)forKey:MPNowPlayingInfoPropertyElapsedPlaybackTime];

//音乐的总时间

[dict setObject:@(self.totalTime)forKey:MPMediaItemPropertyPlaybackDuration];

[[MPNowPlayingInfoCenterdefaultCenter] setNowPlayingInfo:dict];

}

#pragma mark 播放暂停按钮=================

- (void)playAction{

//先将未到时间执行前的任务取消 防止变态点击导致崩溃

[[selfclass]cancelPreviousPerformRequestsWithTarget:selfselector:@selector(theplayAction)object:nil];

[selfperformSelector:@selector(theplayAction)withObject:nilafterDelay:0.2f];// 0.2不可改

}

- (void)theplayAction{

if (self.play ==YES) {// 如果正在播放 则暂停

[self.audioStreampause];

[self.playerTimersetFireDate:[NSDatedistantFuture]];// 计时器暂停

[_playButtonsetImage:[UIImageimageNamed:@"bofang"]forState:UIControlStateNormal];// 按钮换状态

}else{

[self.audioStreampause];// 如果是暂停，则播放。。这里并不是使用[self.audioStream play]；不信你可以试试...不知道为什么会这样

[self.playTimersetFireDate:[NSDatedistantPast]];

[self.playerTimersetFireDate:[NSDatedistantPast]];

[_playButtonsetImage:[UIImageimageNamed:@"audioPause"]forState:UIControlStateNormal];

}

self.play = !self.play;

}

#pragma mark 拖动进度条到指定位置播放，重新添加播放进度。 事先创建好进度条添加滑动方法

- (void)durationSliderTouchEnded:(UISlider *)slider{

[selfslidertoPlay:slider.value];

}

#pragma mark 滑动进度条跳到指定位置，播放状态

- (void)slidertoPlay:(CGFloat)time{

if (time ==1) {// 当滑动到头的时候自动播放下一曲。。

[selfnextButtonAction];

}elseif (time >=0) {

FSStreamPosition pos = {0};

pos.position = time;

[self.audioStreamseekToPosition:pos];// 到指定位置播放

}

}