[[UIDevice currentDevice] setProximityMonitoringEnabled:NO]; //建议在播放之前设置yes，播放结束设置NO，这个功能是
//添加监听
self
@selector(sensorStateChange:)
@"UIDeviceProximityStateDidChangeNotification"
nil];
//处理监听触发事件
void)sensorStateChange:(NSNotificationCenter *)notification;
//如果此时手机靠近面部放在耳朵旁，那么声音将通过听筒输出，并将屏幕变暗（省电啊）
if ([[UIDevice currentDevice] proximityState] == YES)
{
NSLog(@"Device is close to user");
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
}
else
{
NSLog(@"Device is not close to user");
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
}
//初始化播放器的时候如下设置
UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback;
sizeof(sessionCategory),
&sessionCategory);
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
sizeof (audioRouteOverride),
&audioRouteOverride);
//默认情况下扬声器播放
/**
* 创建播放器
*
* @return 播放器
*/
-(AVAudioPlayer *)audioPlayer{
// _audioPlayer=nil;
if (!_audioPlayer) {
NSURL *url=[self getSaveAudioPath];
NSError *error=nil;
_audioPlayer=[[AVAudioPlayer alloc]initWithContentsOfURL:url error:&error];
_audioPlayer.numberOfLoops=0;
_audioPlayer.delegate=self;
[_audioPlayer prepareToPlay];
//初始化播放器的时候如下设置
UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory,
sizeof(sessionCategory),
&sessionCategory);
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,
sizeof (audioRouteOverride),
&audioRouteOverride);
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
[audioSession setActive:YES error:nil];
if (error) {
NSLog(@"创建播放器过程中发生错误，错误信息：%@",error.localizedDescription);
return nil;
}
}
return _audioPlayer;
}