我正在使用以下代码在 android 手机中记录来电和去电对话，但此代码仅在麦克风或扬声器打开且用户禁用扬声器电话时有效，我的代码将无法记录来电。
我想在不激活电话扬声器的情况下记录来电和去电通话。
class MyPhoneStateListener extends PhoneStateListener implements SensorEventListener {
Context context;
AudioManager audioManager;
MediaRecorder recorder;
private SensorManager mSensorManager;
private Sensor myLightSensor;
private boolean CallState;
private float sensorState;
public MyPhoneStateListener(Context context) {
this.context = context;
mSensorManager = (SensorManager) this.context.getSystemService(Context.SENSOR_SERVICE);
myLightSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
audioManager = (AudioManager) this.context.getSystemService(Context.AUDIO_SERVICE);
if (myLightSensor == null){
Log.i("On Receive", "Not Support");
}else{
mSensorManager.registerListener(this,myLightSensor,SensorManager.SENSOR_DELAY_NORMAL);
}
}
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
System.out.println("My Call IDLE");
CallState = false;
StartAudioSpeacker();
StopRecording();
System.out.println("Is phone speaker : "+ audioManager.isSpeakerphoneOn());
if (audioManager.isSpeakerphoneOn()) {
audioManager.setSpeakerphoneOn(false);
mSensorManager.unregisterListener(this);
}
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
System.out.println("My Call OFFHOOK");
CallState = true;
StartAudioSpeacker();
StartRecording();
System.out.println("Is phone speaker : "+ audioManager.isSpeakerphoneOn());
break;
case TelephonyManager.CALL_STATE_RINGING:
System.out.println("My Call RINGING");
break;
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
if (sensor.getType() == Sensor.TYPE_PROXIMITY) {
Log.i("Sensor Changed", "Accuracy :" + accuracy);
}
}
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() == Sensor.TYPE_PROXIMITY) {
Log.i("Sensor Changed", "onSensor Change :" + event.values[0]);
sensorState = event.values[0];
StartAudioSpeacker();
}
}
public void StartAudioSpeacker(){
if (CallState && sensorState == 1.0) {
audioManager = (AudioManager) this.context.getSystemService(Context.AUDIO_SERVICE);
audioManager.setSpeakerphoneOn(true);
audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC,AudioManager.ADJUST_RAISE, AudioManager.FLAG_SHOW_UI);
audioManager.setStreamVolume(AudioManager.MODE_IN_CALL, audioManager.getStreamMaxVolume(AudioManager.MODE_IN_CALL), 1);
System.out.println("Is phone speaker : "+ audioManager.isSpeakerphoneOn());
}else{
audioManager = (AudioManager) this.context.getSystemService(Context.AUDIO_SERVICE);
audioManager.setSpeakerphoneOn(false);
audioManager.setStreamVolume(AudioManager.MODE_IN_CALL, audioManager.getStreamMaxVolume(AudioManager.MODE_IN_CALL), 1);
System.out.println("Speaker Volume :"+ audioManager.getStreamMaxVolume(AudioManager.MODE_IN_CALL));
System.out.println("Is phone speaker : "+ audioManager.isSpeakerphoneOn());
}
}
public void StartRecording(){
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(this.getFullSdPath());
try {
recorder.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
recorder.start(); // Recording is now started
Log.i(this.getClass().getName(), "Start Recording");
}
public void StopRecording(){
recorder.stop();
recorder.reset();
recorder.release();
Log.i(this.getClass().getName(), "Stop Recording");
}
public String getFullSdPath(){
File sdCard = new File(Environment.getExternalStorageDirectory() + "/RecordMyVoice");
if (!sdCard.exists()) {
sdCard.mkdir();
}
File file = new File(Environment.getExternalStorageDirectory()+"/RecordMyVoice/",new Date().getTime()+".3gp");
System.out.println("Full path of record sound is : "+file.getAbsolutePath());
return file.getAbsolutePath();
}
}