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废话不多说说一下现状
网上好多关于扬声器的操作，但是问题多多，SDK7.X 和SDK7.X以上版本有点诧异
#import <Foundation/Foundation.h>
#import <AudioToolbox/AudioToolbox.h>
#import <AVFoundation/AVFoundation.h>
@interface AudioManager : NSObject
{
AVAudioPlayer *m_audioPlayer;
}
@property (atomic, readonly)BOOL _isSpeakerOn;
@property (atomic, readonly)BOOL _isHeadsetOn;
+(AudioManager*)shared;
// 打开扬声器
- (void)setSpeakerOn;
// 关闭扬声器
- (void)setSpeakerOff;
@end
//
// AudioManager.m
// AvconNetAndCallDemo
//
// Created by zjq on 14-7-21.
// Copyright (c) 2014年 zjq. All rights reserved.
//
#import "AudioManager.h"
#import <UIKit/UIKit.h>
#define IOSVersion [[UIDevice currentDevice].systemVersion floatValue]
@implementation AudioManager
@synthesize _isSpeakerOn;
@synthesize _isHeadsetOn;
- (id)init
{
self = [super init];
if (self) {
_isSpeakerOn = NO;
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
//默认情况下扬声器播放
[audioSession setCategory:AVAudioSessionCategoryPlayback withOptions:AVAudioSessionCategoryOptionMixWithOthers error:nil];
[audioSession setActive:YES error:nil];
UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory,
sizeof(sessionCategory),
&sessionCategory);
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,
sizeof (audioRouteOverride),
&audioRouteOverride);
AudioSessionAddPropertyListener (kAudioSessionProperty_AudioRouteChange,
audioRouteChangeListenerCallback, (__bridge void *)(self));
}
return self;
}
static AudioManager *_audioManager = NULL;
+(AudioManager*)shared
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_audioManager = [[AudioManager alloc] init];
});
return _audioManager;
}
- (void)setSpeakerOn
{
NSLog(@"setSpeakerOn:%d",[NSThread isMainThread]);
UInt32 doChangeDefaultRoute = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty (kAudioSessionProperty_OverrideCategoryDefaultToSpeaker,
sizeof (doChangeDefaultRoute),
&doChangeDefaultRoute
);
_isSpeakerOn = [self checkSpeakerOn];
_isHeadsetOn = NO;
//[self resetOutputTarget];
}
- (void)setSpeakerOff
{
UInt32 doChangeDefaultRoute = kAudioSessionOverrideAudioRoute_None;
AudioSessionSetProperty (kAudioSessionProperty_OverrideCategoryDefaultToSpeaker,
sizeof (doChangeDefaultRoute),
&doChangeDefaultRoute
);
_isSpeakerOn = [self checkSpeakerOn];
}
- (BOOL)checkSpeakerOn
{
CFStringRef route;
UInt32 propertySize = sizeof(CFStringRef);
AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &propertySize, &route);
if((route == NULL) || (CFStringGetLength(route) == 0))
{
// Silent Mode
NSLog(@"AudioRoute: SILENT, do nothing!");
}
else
{
NSString* routeStr = (__bridge NSString*)route;
NSRange speakerRange = [routeStr rangeOfString : @"Speaker"];
if (speakerRange.location != NSNotFound)
return YES;
}
return NO;
}
- (BOOL)hasHeadset
{
CFStringRef route;
UInt32 propertySize = sizeof(CFStringRef);
AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &propertySize, &route);
if((route == NULL) || (CFStringGetLength(route) == 0))
{
// Silent Mode
NSLog(@"AudioRoute: SILENT, do nothing!");
}
else
{
NSString* routeStr = (__bridge NSString*)route;
NSLog(@"AudioRoute: %@", routeStr);
if ([routeStr isEqualToString:@"ReceiverAndMicrophone"]) {
// static dispatch_once_t onceToken;
// dispatch_once(&onceToken, ^{
// [self setSpeakerOn];
// });
[self setSpeakerOn];
}
NSRange headphoneRange = [routeStr rangeOfString : @"Headphone"];
NSRange headsetRange = [routeStr rangeOfString : @"Headset"];
if (headphoneRange.location != NSNotFound)
{
return YES;
} else if(headsetRange.location != NSNotFound)
{
return YES;
}
}
return NO;
}
// 判断麦克风是否有用
- (BOOL)hasMicphone
{
return [[AVAudioSession sharedInstance] isInputAvailable];
}
- (void)erjiOutPutTarget
{
BOOL hasHeadset = [self hasHeadset];
if (hasHeadset) {
_isHeadsetOn = YES;
}
NSLog (@"Will Set output target is_headset = %@ .", hasHeadset?@"YES":@"NO");
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_None;
AudioSessionSetProperty(kAudioSessionProperty_OverrideAudioRoute, sizeof(audioRouteOverride), &audioRouteOverride);
}
- (void)resetOutputTarget
{
BOOL hasHeadset = [self hasHeadset];
NSLog (@"Will Set output target is_headset = %@ .", hasHeadset?@"YES":@"NO");
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty(kAudioSessionProperty_OverrideAudioRoute, sizeof(audioRouteOverride), &audioRouteOverride);
_isHeadsetOn = NO;
}
void audioRouteChangeListenerCallback (void *inUserData, AudioSessionPropertyID inPropertyID, UInt32 inPropertyValueS, const void *inPropertyValue)
{
if (inPropertyID != kAudioSessionProperty_AudioRouteChange)
return;
// Determines the reason for the route change, to ensure that it is not
// because of a category change.
CFDictionaryRef routeChangeDictionary = (CFDictionaryRef)inPropertyValue;
CFNumberRef routeChangeReasonRef = (CFNumberRef)CFDictionaryGetValue (routeChangeDictionary, CFSTR (kAudioSession_AudioRouteChangeKey_Reason));
SInt32 routeChangeReason;
CFNumberGetValue (routeChangeReasonRef, kCFNumberSInt32Type, &routeChangeReason);
NSLog(@"<<<RouteChangeReason: %d",(int)routeChangeReason);
NSLog(@"[=======%@",inUserData);
AudioManager *pMgr = (__bridge AudioManager *)inUserData;
//没有耳机
if (routeChangeReason == kAudioSessionRouteChangeReason_OldDeviceUnavailable)
{
[pMgr setSpeakerOn];
[pMgr resetOutputTarget];
}
else if (routeChangeReason == kAudioSessionRouteChangeReason_NewDeviceAvailable)
{
[pMgr erjiOutPutTarget];
}else if (routeChangeReason == kAudioSessionRouteChangeReason_Override){
[pMgr setSpeakerOn];
[pMgr resetOutputTarget];
}
NSLog(@"-------->%f",IOSVersion);
//if (IOSVersion >= 8.0) {
if (routeChangeReason==8) {
[pMgr hasHeadset];
}
//}
}
//- (BOOL)isAirplayActived
//{
// CFDictionaryRef currentRouteDescriptionDictionary = nil;
// UInt32 dataSize = sizeof(currentRouteDescriptionDictionary);
// AudioSessionGetProperty(kAudioSessionProperty_AudioRouteDescription, &dataSize, ¤tRouteDescriptionDictionary);
//
// BOOL airplayActived = NO;
// if (currentRouteDescriptionDictionary)
// {
// CFArrayRef outputs = CFDictionaryGetValue(currentRouteDescriptionDictionary, kAudioSession_AudioRouteKey_Outputs);
// if(outputs != NULL && CFArrayGetCount(outputs) > 0)
// {
// CFDictionaryRef currentOutput = CFArrayGetValueAtIndex(outputs, 0);
// //Get the output type (will show airplay / hdmi etc
// CFStringRef outputType = CFDictionaryGetValue(currentOutput, kAudioSession_AudioRouteKey_Type);
//
// airplayActived = (CFStringCompare(outputType, kAudioSessionOutputRoute_AirPlay, 0) == kCFCompareEqualTo);
// }
// CFRelease(currentRouteDescriptionDictionary);
// }
// return airplayActived;
//}
/*
- (void)openloudspeaker{
//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];
//默认情况下扬声器播放
[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
[audioSession setActive:YES error:nil];
[self handleNotification:YES];
}
#pragma mark - 监听听筒or扬声器
- (void) handleNotification:(BOOL)state
{
[[UIDevice currentDevice] setProximityMonitoringEnabled:state]; //建议在播放之前设置yes，播放结束设置NO，这个功能是开启红外感应
if(state)//添加监听
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(sensorStateChange:) name:@"UIDeviceProximityStateDidChangeNotification"
object:nil];
else//移除监听
[[NSNotificationCenter defaultCenter] removeObserver:self name:@"UIDeviceProximityStateDidChangeNotification" object: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];
}
}
*/
@end
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原文地址：http://blog.csdn.net/zzuzzl/article/details/47132177
