步骤一:在resource文件夹下找到该项目的info.plist添加一个

Required background modes 的数组

并在下面添加一个元素，其值为

App plays audio

步骤二：

需要导入相应的framework和头文件

#import <AudioToolbox/AudioToolbox.h>

#import <AVFoundation/AVFoundation.h>

步骤三：

//禁止程序运行时自动锁屏

[[UIApplicationsharedApplication]setIdleTimerDisabled:YES];

步骤四：

AVAudioSession *audioSession = [AVAudioSessionsharedInstance];

NSError *err =nil;

[audioSession setCategory :AVAudioSessionCategoryPlayAndRecorderror:&err];

if(err)

{

NSLog(@"audioSession: %@ %d %@", [errdomain], [errcode], [[erruserInfo]description]);

}

[audioSessionsetActive:YESerror:&err];

err =nil;

if(err)

{

NSLog(@"audioSession: %@ %d %@", [errdomain], [errcode], [[erruserInfo]description]);

}

NSString * musicFilePath = [[NSBundlemainBundle]pathForResource:@"初音ミク-World Is Mine" ofType:@"mp3"]; //创建音乐文件路径

NSURL * musicURL= [[NSURLalloc]initFileURLWithPath:musicFilePath];

AVAudioPlayer * thePlayer = [[AVAudioPlayeralloc]initWithContentsOfURL:musicURLerror:nil];

[thePlayerplay];

[thePlayersetVolume:1]; //设置音量大小

thePlayer.numberOfLoops = -1;//设置音乐播放次数 -1为一直循环

[musicURLrelease];

[thePlayerrelease];

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