When making a phone call, if you want to use the speaker to output audio by default when the phone is connected, that is, turn on hands-free. The specific method is to make the following modifications in the InCallService file.
File: frameworks-base / telecomm/java/android/telecom/
Add the oncreate method and add the listener for phone state listening.
@Override
public void onCreate() {
();
MyPhoneStateListener phonehoneStateListener=new MyPhoneStateListener();
TelephonyManager mTelephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
(phonehoneStateListener,PhoneStateListener.LISTEN_CALL_STATE);
}
Increase destruction incidents
@Override
public void onDestroy() {
();
}
Add the definition of the event.
private class MyPhoneStateListener extends PhoneStateListener{
@Override
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
setAudioRoute(CallAudioState.ROUTE_EARPIECE);
break;
case TelephonyManager.CALL_STATE_RINGING:
setAudioRoute(CallAudioState.ROUTE_SPEAKER);
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
setAudioRoute(CallAudioState.ROUTE_SPEAKER);
default:
break;
}
(state, incomingNumber);
}
}
If it is an MTK platform, you can enable the following macro to achieve the desired effect
MTK_TB_APP_CALL_FORCE_SPEAKER_ON = yes
Android phone handset and speaker switching
AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
private void setSpeakerphoneOn(boolean on) {
if(on) {
(true);
} else {
(false);//Switch off the speaker (AudioManager.MODE_NORMAL, AudioManager.ROUTE_EARPIECE, AudioManager.ROUTE_ALL);
setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);
//Set the sound to Earpiece and set it to be in the call (AudioManager.MODE_IN_CALL);
}
}
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