HarmonyOS 鸿蒙Next 跨进程通信的onAbilityConnectDone回调不执行

HarmonyOS 鸿蒙Next 跨进程通信的onAbilityConnectDone回调不执行

public class Sender {
    private static final String TAG = "Sender";
    private static final HiLogLabel LABEL_LOG = new HiLogLabel(3, 0xD001100, "Sender");
    public static final Sender INSTANCE = new Sender();
    public static Context app = null;
    private IRemoteServer server = null;
    private final IAbilityConnection connection = new IAbilityConnection() {
        @Override
        public void onAbilityConnectDone(ElementName elementName, IRemoteObject iRemoteObject, int i) {
            server = RemoteServerStub.asInterface(iRemoteObject);
            new ToastDialog(app).setText("onAbilityConnectDone " + server).show();
            Log.e(TAG, "onAbilityConnectDone server=" + server);
        }
        @Override
        public void onAbilityDisconnectDone(ElementName elementName, int i) {
            Log.e(TAG, "onAbilityDisconnectDone");
        }
    };
    private Sender(){}
    public void connect(Ability ability) {
        Intent it = new Intent();
        Operation operation = new Intent.OperationBuilder()
                .withDeviceId("")
                .withBundleName("com.finogeeks.hidl")
                .withAbilityName("com.finogeeks.hidl.RemoteServiceAbility")
                .build();
        it.setOperation(operation);
        ability.connectAbility(it, connection);
    }
    public IRemoteServer server() {
        return server;
    }
}

public class RemoteServiceAbility extends Ability {
    private static final HiLogLabel LABEL_LOG = new HiLogLabel(3, 0xD001100, "RemoteServiceAbility");
    private final RemoteServer server = new RemoteServer(this, "RemoteServer");
    @Override
    public void onStart(Intent intent) {
        new ToastDialog(this).setText("onStart").show();
        HiLog.error(LABEL_LOG, "RemoteServiceAbility::onStart");
        super.onStart(intent);
    }
    @Override
    public void onBackground() {
        super.onBackground();
        HiLog.info(LABEL_LOG, "RemoteServiceAbility::onBackground");
    }
    @Override
    public void onStop() {
        super.onStop();
        HiLog.info(LABEL_LOG, "RemoteServiceAbility::onStop");
    }
    @Override
    public void onCommand(Intent intent, boolean restart, int startId) {}
    @Override
    public IRemoteObject onConnect(Intent intent) {
        new ToastDialog(this).setText("onConnect").show();
        return server;
    }
    @Override
    public void onDisconnect(Intent intent) {}
}

通过toast可以看出，RemoteServiceAbility的onConnect方法执行了，但是IAbilityConnection#onAbilityConnectDone方法却没有执行，这是什么原因？