防止iphone進(jìn)入休眠后臺(tái)播放音樂

    步驟一:在resource文件夾下找到該項(xiàng)目的info.plist添加一個(gè)
    Required background modes 的數(shù)組
    并在下面添加一個(gè)元素，其值為
    App plays audio
    步驟二：
    需要導(dǎo)入相應(yīng)的framework和頭文件
    #import <AudioToolbox/AudioToolbox.h>
    #import <AVFoundation/AVFoundation.h>
    步驟三：
    //禁止程序運(yùn)行時(shí)自動(dòng)鎖屏
    [[UIApplicationsharedApplication]setIdleTimerDisabled:YES];
    步驟四：
    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"]; //創(chuàng)建音樂文件路徑
    NSURL * musicURL= [[NSURLalloc]initFileURLWithPath:musicFilePath];
    AVAudioPlayer * thePlayer = [[AVAudioPlayeralloc]initWithContentsOfURL:musicURLerror:nil];
    [thePlayerplay];
    [thePlayersetVolume:1]; //設(shè)置音量大小
    thePlayer.numberOfLoops = -1;//設(shè)置音樂播放次數(shù) -1為一直循環(huán)
    [musicURLrelease];
    [thePlayerrelease];