OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url(url).get().build();
client.newCall(request).enqueue(new Callback() {
    @Override
    public void onResponse(Call call, Response response) throws IOException {
        String jsonResponse = response.body().string();
        List<Item> items = parseAndSetData(jsonResponse);
        // UI 업데이트는 main thread에서 수행
    }
});

ttsHelper.performTextToSpeech(item.getContent(), filename, audioFile -> {
    if (audioFile.exists()) {
        audioService.prepareAudio(audioFile.getAbsolutePath(), 0, true);
    }
});

SharedPreferences prefs = requireContext().getSharedPreferences("MyPrefs", Context.MODE_PRIVATE);
for (Map.Entry<String, ?> entry : prefs.getAll().entrySet()) {
    if (entry.getKey().startsWith("liked_")) {
        Item item = gson.fromJson(entry.getValue().toString(), Item.class);
        likedItems.add(item);
    }
}

audioService.setProgressUpdateListener((current, total) -> {
    seekBar.setProgress((int)((current / (float) total) * 100));
});

ShimmerAdapter shimmerAdapter = new ShimmerAdapter(5);
recyclerView.setAdapter(shimmerAdapter);
shimmerLayout.startShimmer();