how to turn speaker on/off programmatically in android Pie and UP

Question

Same as this question and many others from a few years ago: how to turn speaker on/off programmatically in android 4.0

It seems that Android has changed the way it handles this.

here are the things I tried to make an Outgoing call to have a speakerphone programmatically. None of these solutions worked for me on Android Pie. while they seem to work well on Android Nougat and Oreo

Solution 1.

final static int FOR_MEDIA = 1;
final static int FORCE_NONE = 0;
final static int FORCE_SPEAKER = 1;

Class audioSystemClass = Class.forName("android.media.AudioSystem");
Method setForceUse = audioSystemClass.getMethod("setForceUse", int.class, int.class);
setForceUse.invoke(null, FOR_MEDIA, FORCE_SPEAKER);

2.

AudioManager audioManager = (AudioManager)getApplicationContext().getSystemService(Context.AUDIO_SERVICE);
if (audioManager != null) {
   audioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
   audioManager.setSpeakerphoneOn(true);

3.

AudioManager audioManager = (AudioManager)getApplicationContext().getSystemService(Context.AUDIO_SERVICE);
if (audioManager != null) {
   audioManager.setMode(AudioManager.MODE_IN_CALL);
   audioManager.setSpeakerphoneOn(true);

4.

Thread thread = new Thread() {
    @Override
    public void run() {
        try {
            while(true) {
                sleep(1000);
                audioManager.setMode(AudioManager.MODE_IN_CALL);
                if (!audioManager.isSpeakerphoneOn())
                    audioManager.setSpeakerphoneOn(true);
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
};
thread.start();

the app has the following permissions granted among many others:

<uses-permission android:name="android.permission.CALL_PHONE"/>
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />

I have also tried the following solution only for outgoing calls. and it also didn't work.

Intent callIntent = new Intent(Intent.ACTION_CALL);
callIntent.putExtra("speaker", true);
callIntent.setData(Uri.parse("tel:" + number));
context.startActivity(callIntent);

Answer 1

I am surprised nobody mentioned TelecomManager.EXTRA_START_CALL_WITH_SPEAKERPHONE.

As an intent:

val uri = Uri.fromParts("tel", PHONE_NUMBER, null)
val intentCall = Intent(Intent.ACTION_CALL, uri).apply {
    putExtra(TelecomManager.EXTRA_START_CALL_WITH_SPEAKERPHONE, true)
    flags = Intent.FLAG_ACTIVITY_NEW_TASK
}
startActivity(intentCall)

Using TelecomManager.placeCall:

val uri = Uri.fromParts("tel", PHONE_NUMBER, null)
val extras = Bundle().apply { putBoolean(TelecomManager.EXTRA_START_CALL_WITH_SPEAKERPHONE, true) }
val telecomManager = getSystemService(TELECOM_SERVICE) as TelecomManager
telecomManager.placeCall(uri, extras)

The default phone app should handle that extra data and enable the speakers.

Remember to ask for android.permission.CALL_PHONE permission.

Answer 2

In Android Pie, I had the same problem. I resolved it using an InCallService with

setAudioRoute(ROUTE_SPEAKER)

Your app needs to be Default phone app.