How to use

hasCapabilities

method

in

android.telecom.PhoneAccount

/**
 * Determine whether a phone account supports call subjects.
 *
 * @return {@code true} if call subjects are supported, {@code false} otherwise.
 */
public static boolean getAccountSupportsCallSubject(Context context,
    @Nullable PhoneAccountHandle accountHandle) {
  final PhoneAccount account = TelecomUtil.getPhoneAccount(context, accountHandle);
  return account == null ? false :
      account.hasCapabilities(PhoneAccount.CAPABILITY_CALL_SUBJECT);
}

/**
 * Return a list of phone accounts that are subscription/SIM accounts.
 */
public static List<PhoneAccountHandle> getSubscriptionPhoneAccounts(Context context) {
  List<PhoneAccountHandle> subscriptionAccountHandles = new ArrayList<PhoneAccountHandle>();
  final List<PhoneAccountHandle> accountHandles =
      TelecomUtil.getCallCapablePhoneAccounts(context);
  for (PhoneAccountHandle accountHandle : accountHandles) {
    PhoneAccount account = TelecomUtil.getPhoneAccount(context, accountHandle);
    if (account.hasCapabilities(PhoneAccount.CAPABILITY_SIM_SUBSCRIPTION)) {
      subscriptionAccountHandles.add(accountHandle);
    }
  }
  return subscriptionAccountHandles;
}

PhoneAccount account = telecommMgr.getPhoneAccount(accountHandle);
if (account != null) {
  if (account.hasCapabilities(PhoneAccount.CAPABILITY_VIDEO_CALLING)) {
    if (account.hasCapabilities(
        PhoneAccountSdkCompat.CAPABILITY_VIDEO_CALLING_RELIES_ON_PRESENCE)) {
      videoCapabilities |= VIDEO_CALLING_PRESENCE;

  /**
   * Determines if one of the call capable phone accounts defined supports calling with a subject
   * specified.
   *
   * @param context The context.
   * @return {@code true} if one of the call capable phone accounts supports calling with a
   *      subject specified, {@code false} otherwise.
   */
  public static boolean isCallWithSubjectSupported(Context context) {
    if (!PermissionsUtil.hasPermission(context, android.Manifest.permission.READ_PHONE_STATE)
        || !CompatUtils.isCallSubjectCompatible()) {
      return false;
    }
    TelecomManager telecommMgr = (TelecomManager)
        context.getSystemService(Context.TELECOM_SERVICE);
    if (telecommMgr == null) {
      return false;
    }

    List<PhoneAccountHandle> accountHandles = telecommMgr.getCallCapablePhoneAccounts();
    for (PhoneAccountHandle accountHandle : accountHandles) {
      PhoneAccount account = telecommMgr.getPhoneAccount(accountHandle);
      if (account != null && account.hasCapabilities(PhoneAccount.CAPABILITY_CALL_SUBJECT)) {
        return true;
      }
    }
    return false;
  }
}