How to turn on speaker programmatically in android

Question

How to turn on speaker programmatically when incoming calls received and headphone attached on audio jack?

Answer 1

audiomanager.setSpeakerphoneOn(true)

Be sure to include the MODIFY_AUDIO_SETTINGS permission in your manifest.

Answer 2

// for android 10 and higher
Intent callIntent = new Intent(Intent.ACTION_CALL);
callIntent.putExtra(TelecomManager.EXTRA_START_CALL_WITH_SPEAKERPHONE, true);
callIntent.setData(Uri.parse("tel:" + phone));