Стартует сервис у которого в <intent-filter> прописан ACTION_CUSTOM_EVENT. Таким же образом можно стартануть активити

sendImplicitIntent

    public static Intent convertImplicitIntentToExplicitIntent(Intent implicitIntent, Context context) {
        PackageManager pm = context.getPackageManager();
        List<ResolveInfo> resolveInfoList = pm.queryIntentServices(implicitIntent, 0);
        if (resolveInfoList == null || resolveInfoList.size() != 1) {
            return null;
        }
        ResolveInfo serviceInfo = resolveInfoList.get(0);
        ComponentName component = new ComponentName(serviceInfo.serviceInfo.packageName, serviceInfo.serviceInfo.name);
        Intent explicitIntent = new Intent(implicitIntent);
        explicitIntent.setComponent(component);
        return explicitIntent;
    }

// somewhere in classes
Intent intent = new Intent();
intent.setAction(ACTION_CUSTOM_EVENT);
Context context = getApplicationContext();
Intent explicitIntent = convertImplicitIntentToExplicitIntent(intent, context);
if(explicitIntent != null){
    context.startService(explicitIntent);
}