iOS系統(tǒng)聲音ID

原文:http://blog.csdn.net/wlm0813/article/details/51170574
系統(tǒng)聲音服務(System Sound Services)提供了一個接口，用于播放不超過30秒的聲音。它支持的文件格式有限，具體地說只有CAF、AIF和使用PCM或IMA/ADPCM數(shù)據(jù)的WAV文件。由于這些函數(shù)沒有提供操縱聲音和控制音量的功能，所以當你為多媒體或者游戲創(chuàng)建專門的配樂時，不要使用系統(tǒng)聲音服務。

iOS使用系統(tǒng)聲音服務來支持三種不同的通知：
1. 聲音：立刻播放一個簡單的聲音文件。如果手機被設置為靜音，用戶什么也聽不到
2. 提醒：播放一個聲音文件，如果手機被設置為靜音或震動，將通過震動提醒用戶
3. 震動：震動手機，而不考慮其他設置

要在項目中使用系統(tǒng)聲音服務，首先在自己的工程中添加AudioToolbox.framework庫，在.m文件中添加頭文件：要導入AudioToolbox.h

#import <AudioToolbox/AudioToolbox.h>
系統(tǒng)聲音服務并非是通過類實現(xiàn)的，而是使用傳統(tǒng)的C語言函數(shù)調用來觸發(fā)播放操作。要播放音頻，需要使用的兩個函數(shù)是AudioServicesCreateSystemSoundID 和 AudioServicesPlaySystemSound。還需要聲明一個類型為SystemSoundID的變量，它表示要使用的聲音文件。下面演示了如何加載并播放聲音：


然后在需要打開聲音的地方添加代碼：AudioServicesPlaySystemSound(audioID);
其中audioID就是你需要打開系統(tǒng)聲音的id號：附上系統(tǒng)對應提示音對照表：
There are some predefined system sounds, for the system sound ID in the range 1000 to 2000 (decimal), as shown below (from 2.0 to 5.0 beta). The system sounds are all stored in/System/Library/Audio/UISounds/.


Sound ID    File name (iPhone)  File name (iPod Touch)  Category    Note
1000    new-mail.caf    new-mail.caf    MailReceived     
1001    mail-sent.caf   mail-sent.caf   MailSent     
1002    Voicemail.caf   Voicemail.caf   VoicemailReceived    
1003    ReceivedMessage.caf ReceivedMessage.caf SMSReceived  
1004    SentMessage.caf SentMessage.caf SMSSent  
1005    alarm.caf   sq_alarm.caf    CalendarAlert    
1006    low_power.caf   low_power.caf   LowPower     
1007    sms-received1.caf   sms-received1.caf   SMSReceived_Alert    
1008    sms-received2.caf   sms-received2.caf   SMSReceived_Alert    
1009    sms-received3.caf   sms-received3.caf   SMSReceived_Alert    
1010    sms-received4.caf   sms-received4.caf   SMSReceived_Alert    
1011    -   -   SMSReceived_Vibrate  
1012    sms-received1.caf   sms-received1.caf   SMSReceived_Alert    
1013    sms-received5.caf   sms-received5.caf   SMSReceived_Alert    
1014    sms-received6.caf   sms-received6.caf   SMSReceived_Alert    
1015    Voicemail.caf   Voicemail.caf   -   Available since 2.1
1016    tweet_sent.caf  tweet_sent.caf  SMSSent Available since 5.0
1020    Anticipate.caf  Anticipate.caf  SMSReceived_Alert   Available since 4.2
1021    Bloom.caf   Bloom.caf   SMSReceived_Alert   Available since 4.2
1022    Calypso.caf Calypso.caf SMSReceived_Alert   Available since 4.2
1023    Choo_Choo.caf   Choo_Choo.caf   SMSReceived_Alert   Available since 4.2
1024    Descent.caf Descent.caf SMSReceived_Alert   Available since 4.2
1025    Fanfare.caf Fanfare.caf SMSReceived_Alert   Available since 4.2
1026    Ladder.caf  Ladder.caf  SMSReceived_Alert   Available since 4.2
1027    Minuet.caf  Minuet.caf  SMSReceived_Alert   Available since 4.2
1028    News_Flash.caf  News_Flash.caf  SMSReceived_Alert   Available since 4.2
1029    Noir.caf    Noir.caf    SMSReceived_Alert   Available since 4.2
1030    Sherwood_Forest.caf Sherwood_Forest.caf SMSReceived_Alert   Available since 4.2
1031    Spell.caf   Spell.caf   SMSReceived_Alert   Available since 4.2
1032    Suspense.caf    Suspense.caf    SMSReceived_Alert   Available since 4.2
1033    Telegraph.caf   Telegraph.caf   SMSReceived_Alert   Available since 4.2
1034    Tiptoes.caf Tiptoes.caf SMSReceived_Alert   Available since 4.2
1035    Typewriters.caf Typewriters.caf SMSReceived_Alert   Available since 4.2
1036    Update.caf  Update.caf  SMSReceived_Alert   Available since 4.2
1050    ussd.caf    ussd.caf    USSDAlert    
1051    SIMToolkitCallDropped.caf   SIMToolkitCallDropped.caf   SIMToolkitTone   
1052    SIMToolkitGeneralBeep.caf   SIMToolkitGeneralBeep.caf   SIMToolkitTone   
1053    SIMToolkitNegativeACK.caf   SIMToolkitNegativeACK.caf   SIMToolkitTone   
1054    SIMToolkitPositiveACK.caf   SIMToolkitPositiveACK.caf   SIMToolkitTone   
1055    SIMToolkitSMS.caf   SIMToolkitSMS.caf   SIMToolkitTone   
1057    Tink.caf    Tink.caf    PINKeyPressed    
1070    ct-busy.caf ct-busy.caf AudioToneBusy   There was no category for this sound before 4.0.
1071    ct-congestion.caf   ct-congestion.caf   AudioToneCongestion There was no category for this sound before 4.0.
1072    ct-path-ack.caf ct-path-ack.caf AudioTonePathAcknowledge    There was no category for this sound before 4.0.
1073    ct-error.caf    ct-error.caf    AudioToneError  There was no category for this sound before 4.0.
1074    ct-call-waiting.caf ct-call-waiting.caf AudioToneCallWaiting    There was no category for this sound before 4.0.
1075    ct-keytone2.caf ct-keytone2.caf AudioToneKey2   There was no category for this sound before 4.0.
1100    lock.caf    sq_lock.caf ScreenLocked     
1101    unlock.caf  sq_lock.caf ScreenUnlocked   
1102    -   -   FailedUnlock     
1103    Tink.caf    sq_tock.caf KeyPressed   
1104    Tock.caf    sq_tock.caf KeyPressed   
1105    Tock.caf    sq_tock.caf KeyPressed   
1106    beep-beep.caf   sq_beep-beep.caf    ConnectedToPower     
1107    RingerChanged.caf   RingerChanged.caf   RingerSwitchIndication   
1108    photoShutter.caf    photoShutter.caf    CameraShutter    
1109    shake.caf   shake.caf   ShakeToShuffle  Available since 3.0
1110    jbl_begin.caf   jbl_begin.caf   JBL_Begin   Available since 3.0
1111    jbl_confirm.caf jbl_confirm.caf JBL_Confirm Available since 3.0
1112    jbl_cancel.caf  jbl_cancel.caf  JBL_Cancel  Available since 3.0
1113    begin_record.caf    begin_record.caf    BeginRecording  Available since 3.0
1114    end_record.caf  end_record.caf  EndRecording    Available since 3.0
1115    jbl_ambiguous.caf   jbl_ambiguous.caf   JBL_Ambiguous   Available since 3.0
1116    jbl_no_match.caf    jbl_no_match.caf    JBL_NoMatch Available since 3.0
1117    begin_video_record.caf  begin_video_record.caf  BeginVideoRecording Available since 3.0
1118    end_video_record.caf    end_video_record.caf    EndVideoRecording   Available since 3.0
1150    vc~invitation-accepted.caf  vc~invitation-accepted.caf  VCInvitationAccepted    Available since 4.0
1151    vc~ringing.caf  vc~ringing.caf  VCRinging   Available since 4.0
1152    vc~ended.caf    vc~ended.caf    VCEnded Available since 4.0
1153    ct-call-waiting.caf ct-call-waiting.caf VCCallWaiting   Available since 4.1
1154    vc~ringing.caf  vc~ringing.caf  VCCallUpgrade   Available since 4.1
1200    dtmf-0.caf  dtmf-0.caf  TouchTone    
1201    dtmf-1.caf  dtmf-1.caf  TouchTone    
1202    dtmf-2.caf  dtmf-2.caf  TouchTone    
1203    dtmf-3.caf  dtmf-3.caf  TouchTone    
1204    dtmf-4.caf  dtmf-4.caf  TouchTone    
1205    dtmf-5.caf  dtmf-5.caf  TouchTone    
1206    dtmf-6.caf  dtmf-6.caf  TouchTone    
1207    dtmf-7.caf  dtmf-7.caf  TouchTone    
1208    dtmf-8.caf  dtmf-8.caf  TouchTone    
1209    dtmf-9.caf  dtmf-9.caf  TouchTone    
1210    dtmf-star.caf   dtmf-star.caf   TouchTone    
1211    dtmf-pound.caf  dtmf-pound.caf  TouchTone    
1254    long_low_short_high.caf long_low_short_high.caf Headset_StartCall    
1255    short_double_high.caf   short_double_high.caf   Headset_Redial   
1256    short_low_high.caf  short_low_high.caf  Headset_AnswerCall   
1257    short_double_low.caf    short_double_low.caf    Headset_EndCall  
1258    short_double_low.caf    short_double_low.caf    Headset_CallWaitingActions   
1259    middle_9_short_double_low.caf   middle_9_short_double_low.caf   Headset_TransitionEnd    
1300    Voicemail.caf   Voicemail.caf   SystemSoundPreview   
1301    ReceivedMessage.caf ReceivedMessage.caf SystemSoundPreview   
1302    new-mail.caf    new-mail.caf    SystemSoundPreview   
1303    mail-sent.caf   mail-sent.caf   SystemSoundPreview   
1304    alarm.caf   sq_alarm.caf    SystemSoundPreview   
1305    lock.caf    sq_lock.caf SystemSoundPreview   
1306    Tock.caf    sq_tock.caf KeyPressClickPreview    The category was SystemSoundPreview before 3.2.
1307    sms-received1.caf   sms-received1.caf   SMSReceived_Selection    
1308    sms-received2.caf   sms-received2.caf   SMSReceived_Selection    
1309    sms-received3.caf   sms-received3.caf   SMSReceived_Selection    
1310    sms-received4.caf   sms-received4.caf   SMSReceived_Selection    
1311    -   -   SMSReceived_Vibrate  
1312    sms-received1.caf   sms-received1.caf   SMSReceived_Selection    
1313    sms-received5.caf   sms-received5.caf   SMSReceived_Selection    
1314    sms-received6.caf   sms-received6.caf   SMSReceived_Selection    
1315    Voicemail.caf   Voicemail.caf   SystemSoundPreview  Available since 2.1
1320    Anticipate.caf  Anticipate.caf  SMSReceived_Selection   Available since 4.2
1321    Bloom.caf   Bloom.caf   SMSReceived_Selection   Available since 4.2
1322    Calypso.caf Calypso.caf SMSReceived_Selection   Available since 4.2
1323    Choo_Choo.caf   Choo_Choo.caf   SMSReceived_Selection   Available since 4.2
1324    Descent.caf Descent.caf SMSReceived_Selection   Available since 4.2
1325    Fanfare.caf Fanfare.caf SMSReceived_Selection   Available since 4.2
1326    Ladder.caf  Ladder.caf  SMSReceived_Selection   Available since 4.2
1327    Minuet.caf  Minuet.caf  SMSReceived_Selection   Available since 4.2
1328    News_Flash.caf  News_Flash.caf  SMSReceived_Selection   Available since 4.2
1329    Noir.caf    Noir.caf    SMSReceived_Selection   Available since 4.2
1330    Sherwood_Forest.caf Sherwood_Forest.caf SMSReceived_Selection   Available since 4.2
1331    Spell.caf   Spell.caf   SMSReceived_Selection   Available since 4.2
1332    Suspense.caf    Suspense.caf    SMSReceived_Selection   Available since 4.2
1333    Telegraph.caf   Telegraph.caf   SMSReceived_Selection   Available since 4.2
1334    Tiptoes.caf Tiptoes.caf SMSReceived_Selection   Available since 4.2
1335    Typewriters.caf Typewriters.caf SMSReceived_Selection   Available since 4.2
1336    Update.caf  Update.caf  SMSReceived_Selection   Available since 4.2
1350    -   -   RingerVibeChanged    
1351    -   -   SilentVibeChanged    
4095    -   -   Vibrate There was no category for this sound before 2.2.
In the SDK this is the constant kSystemSoundID_Vibrate.

當然你可以定義自己的提示音，打開自己工程中的音頻文件，代碼如下:


static SystemSoundID _ringSystemSoundID;

static void ringAudioServicesSystemSoundCompletionProc(SystemSoundID ssID, void *clientData)
{
    AudioServicesPlayAlertSound(ssID);
}

void ringStartRing()
{
    // 獲取文件所在的路徑
    NSString *path = [NSString stringWithFormat:@"%@%@", [[NSBundle mainBundle] resourcePath], @"/jad0007a.wav"];
    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategorySoloAmbient
                                           error:nil];
    //利用打開的文件創(chuàng)建一個soundID
    AudioServicesCreateSystemSoundID((__bridge CFURLRef) path, &_ringSystemSoundID);
    //當聲音播放完后的回調函數(shù)，完成后將調用ringAudioServicesSystemSoundCompletionProc函數(shù)進行循環(huán)播放
    AudioServicesAddSystemSoundCompletion(_ringSystemSoundID, NULL, NULL, ringAudioServicesSystemSoundCompletionProc, NULL);
    //通過創(chuàng)建的soundID打開對應的音頻文件
    AudioServicesPlayAlertSound(_ringSystemSoundID);
}
通過調用AudioServicesAddSystemSoundCompletion 添加可選的系統(tǒng)聲音完成回調，通知你的程序聲音已經(jīng)播放完畢。如果你不使用一個接一個的短聲音，那么一般可以跳過該步驟。

void ringStopRing()
{
    if (_ringSystemSoundID != 0) {
        //移除系統(tǒng)播放完成后的回調函數(shù)
        AudioServicesRemoveSystemSoundCompletion(_ringSystemSoundID);
        //銷毀創(chuàng)建的SoundID
        AudioServicesDisposeSystemSoundID(_ringSystemSoundID);
        _ringSystemSoundID = 0;
    }
}
調用 AudioServicesDisposeSystemSoundID 以及相應的聲音可以清除你的聲音，該操作可以釋放聲音對象以及相關的所有資源

對于提醒音來說，與系統(tǒng)聲音之間的差別在于，如果手機處于靜音狀態(tài)，提醒音將自動觸發(fā)震動。提醒音的設置和用法與系統(tǒng)聲音相同，區(qū)別在于系統(tǒng)聲音調用AudioServicesPlaySystemSound，而提醒音調用AudioServicesPlayAlertSound。

震動更容易實現(xiàn)，只需要調用AudioServicesPlaySystemSound，并將常量kSystemSoundID_Vibrate傳遞給它：

AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
如果視圖震動不支持震動的設備(如iPad2)，將靜默失敗。因此將震動代碼留在應用程序中不會有任何害處，而不管目標設備是什么。


////////////
AVAudioPlayer和SystemSoundService。這兩種功能在一定程度上都適合作為游戲音效的播放方式。而兩者也各有其優(yōu)缺點。下面我們來總結一下有哪些：
1）AVAudioPlayer的優(yōu)點
（1）可以播放任意長度音樂；
（2）可以循環(huán)播放；
（3）可以控制播放的時間；
（4）可以控制聲道的音量實現(xiàn)立體聲效果；
（5）可以調整音量。
2）AVAudioPlayer的缺點
（1）播放之前必須先加載，不能立即播放；
（2）一次一個AudioPlayer只能播放所加載的音樂，不能同時播放好幾次同樣的音樂。
（3）沒有振動效果
3）SystemSoundService的優(yōu)點：
（1）能夠立即播放
（2）能夠在同一時間播放多次音樂
（3）可以加上振動效果
4）SystemSoundService的缺點：
（1）不能循環(huán)播放
（2）不能控制播放時間
（3）不能控制聲道
（4）不能控制音量
（5）不能暫停音樂
因此，我們可以考慮綜合兩者的功能！
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