本文实例讲述了Android开发之关闭和打开Speaker(扬声器)的方法。分享给大家供大家参考，具体如下：
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private int currVolume = 0;
/**
* 打开扬声器
*/
private void openSpeaker() {
try{
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
audioManager.setMode(AudioManager.ROUTE_SPEAKER);
currVolume = audioManager.getStreamVolume(AudioManager.STREAM_VOICE_CALL);
if(!audioManager.isSpeakerphoneOn()) {
//setSpeakerphoneOn() only work when audio mode set to MODE_IN_CALL.
audioManager.setMode(AudioManager.MODE_IN_CALL);
audioManager.setSpeakerphoneOn(true);
audioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL,
audioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL ),
AudioManager.STREAM_VOICE_CALL);
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 关闭扬声器
*/
public void closeSpeaker() {
try {
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
if(audioManager != null) {
if(audioManager.isSpeakerphoneOn()) {
audioManager.setSpeakerphoneOn(false);
audioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL,currVolume,
AudioManager.STREAM_VOICE_CALL);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
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希望本文所述对大家Android程序设计有所帮助。