Question

I have a list view contains 100+ rows. every time the user opens the app it load all the data from http. And i want to cache that data so that if to open that activity it should get it from the cache not from the http every time.

also i am thinking add some flag to clear out the cache (if for some reason if my url changes it should not read fro cache version rather get the latest urls

I am not sure what to use cache inside the sd card vs sqllite.

my listview contains the url, artist, name, …. these are all reference something like this:

<song>
    <id>1</id>
    <title>Someone Like You</title>
    <artist>Adele</artist>
    <duration>4:47</duration>
    <plays>1662</plays>
    <songs_url>http://website/music/someonelikeyou.mp3</songs_url>
    <thumb_url>http://website/music/images/adele.png</thumb_url>
</song>

here is the code that reads from http:

// Getting XML from URL making HTTP request
// @param url string
public String getXmlFromUrl(String url) {
    String xml = null;

    try {
        // defaultHttpClient
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(url);

        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();
        xml = EntityUtils.toString(httpEntity);

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    // return XML
    return xml;
}

Answer 1

SQLite of course. It was done for holding such king of information. It is fast and easie to select filtered information.
For images (like thumbs) use cache folder: context.getExternalCacheDir().getAbsolutePath()