调起VoLTE视频通话代码：
private void startVoLTECall(String number) {
Intent intent =new Intent(Intent.ACTION_CALL, Uri.parse(number));
intent.putExtra(TelecomManager.EXTRA_START_CALL_WITH_VIDEO_STATE,
VideoProfile.STATE_BIDIRECTIONAL);
// intent.putExtra(PhoneGlobals.EXTRA_CALL_ORIGIN, callOrigin);
intent.setData(Uri.parse("tel:" + number));
if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
return;
}
startActivity(intent);
}
