private Pair<Bitmap, Track> getRandomBitmap(List<Track> tracks) {
Track track = null;
Bitmap bitmap = null;
int randomIndex = 0;
if (tracks.size() > 0) {
randomIndex = roulette.nextInt(tracks.size());
track = tracks.get(randomIndex);
if (track != null) {
try {
bitmap = retrieveBitmap(new URL(track.getWaveformUrl()));
} catch (MalformedURLException e) {
e.printStackTrace();
}
}
}
return new Pair<Bitmap, Track>(bitmap, track);
}
private List<Track> convertJsonToTracks(String responseAsString) {
List<Track> tracks = new ArrayList<Track>();
try {
JSONArray tracksArray = new JSONArray(responseAsString);
for (int i = 0; i < tracksArray.length(); i++) {
JSONObject track = (JSONObject) tracksArray.get(i);
Log.d(TAG, "Parsing JSON response: [" + track.toString() + "]");
tracks.add(Track.fromJSON(track));
}
} catch (JSONException e) {
Log.e(TAG, "Could not obtains tracks from response", e);
}
return tracks;
}