时间：2021-01-24 11:06:25 | 栏目：Android代码 | 点击：次
在打电话时如果想在电话接通时默认采用扬声器进行audio的输出，也就是打开免提。具体的做法是在InCallService文件中，做出下面的修改。
文件：frameworks-base / telecomm/java/android/telecom/InCallService.java
增加oncreate方法，添加phone状态监听的listener。
@Override
public void onCreate() {
super.onCreate();
MyPhoneStateListener phonehoneStateListener=new MyPhoneStateListener();
TelephonyManager mTelephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
mTelephonyManager.listen(phonehoneStateListener,PhoneStateListener.LISTEN_CALL_STATE);
}
增加销毁事件
@Override
public void onDestroy() {
super.onDestroy();
}
增加事件的定义。
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;
}
super.onCallStateChanged(state, incomingNumber);
}
}
如果是MTK平台的话，可以开启如下这个宏，也可以达到想要的效果
MTK_TB_APP_CALL_FORCE_SPEAKER_ON = yes
Android手机听筒和扬声器切换
AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
private void setSpeakerphoneOn(boolean on) {
if(on) {
audioManager.setSpeakerphoneOn(true);
} else {
audioManager.setSpeakerphoneOn(false);//关闭扬声器
audioManager.setRouting(AudioManager.MODE_NORMAL, AudioManager.ROUTE_EARPIECE, AudioManager.ROUTE_ALL);
setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);
//把声音设定成Earpiece（听筒）出来，设定为正在通话中
audioManager.setMode(AudioManager.MODE_IN_CALL);
}
}