Android Open Source - cloudwave Change Wallpaper Service

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From Project

Back to project page cloudwave.

License

The source code is released under:

Apache License

Java Source Code

package com.luboganev.cloudwave.service;
// w  ww .j a  va  2  s  .co  m
import java.io.File;

import android.content.Intent;
import android.support.v4.content.LocalBroadcastManager;

import com.commonsware.cwac.wakeful.WakefulIntentService;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.luboganev.cloudwave.LogUtils;
import com.luboganev.cloudwave.data.LocalStorageManager;
import com.luboganev.cloudwave.data.Track;

/**
 *  This IntentService manages the automatic change 
 *  of random wallpaper in the background
 */
public class ChangeWallpaperService extends WakefulIntentService {
  public ChangeWallpaperService() {
    super("ChangeWallpaperIntentService");
  }

  @Override
  protected void doWakefulWork(Intent intent) {
    LogUtils.d(this, "Doing wakeful work");
    
    // load local storage
    LocalStorageManager manager = new LocalStorageManager(getApplicationContext());
    if(manager.hasSavedLocalStorage()) {
      LogUtils.d(this, "Loading local storage from file");
      manager.loadFromFile();
    }
    else {
      if(CommunicationUtils.hasInternetConnectivity(getApplicationContext())) {
        LogUtils.d(this, "Loading default storage");
        manager.loadDefaultStorage();
        
        String userTracksString = CommunicationUtils.executeFetchArtistTracks(manager.getArtistName());
        JsonArray jarrayTracks = new JsonParser().parse(userTracksString).getAsJsonArray();
        for (JsonElement jsonElement : jarrayTracks) {
          JsonObject track = jsonElement.getAsJsonObject();
          long id = track.get("id").getAsLong();
          String title = track.get("title").getAsString();
          String permalinkUrl = track.get("permalink_url").getAsString();
          String waveformUrl = track.get("waveform_url").getAsString();
          manager.addTrack(id, title, permalinkUrl, waveformUrl);
        }
        if(jarrayTracks.size() > 0) {
          manager.pickNewNextRandomTrack();
        }
        manager.saveToFile();
      }
      else {
        // wait for internet connection
        LogUtils.d(this, "Waiting for internet to load tracks");
        CommunicationUtils.setConnectivityChangeReceiverEnabled(getApplicationContext(), true);
        return; // we have no track so we cannot load any soundwaves anyway
      }
    }
    
    LogUtils.d(this, "Processing the soundwave");
    
    Track nextTrack = manager.getNextTrack();
    if(nextTrack == null) {
      // this means that there were no tracks for the Heed The Sound user,
      // which is currently not possible cause it is my favorite user and
      // I know there are many tracks there
    }
    
    File file = manager.generateSoundwaveFileUri(nextTrack.id);
    if(file.exists()) {
      // we already have it
      manager.setNextAsCurrentTrack();
      manager.pickNewNextRandomTrack();
      manager.saveToFile();
      notifyUpdateWallpaper();
    }
    else {
      // we will need to download the soundwave from the server first
      if(CommunicationUtils.hasInternetConnectivity(getApplicationContext())) {
        if(CommunicationUtils.executeSoundwaveDownload(nextTrack.waveformUrl, file)) {
          // file downloaded successfully
          manager.setNextAsCurrentTrack();
          manager.pickNewNextRandomTrack();
          manager.saveToFile();
          notifyUpdateWallpaper();
        }
      }
      else {
        // wait for internet connection
        LogUtils.d(this, "Waiting for internet to load track soundwave");
        CommunicationUtils.setConnectivityChangeReceiverEnabled(getApplicationContext(), true);
      }
    }
  }
  
  /** The callback intent action which clients can register for */
    public static final String INTENT_ACTION_NOTIFY_WALLPAPER_CHANGE = "com.luboganev.cloudwave.service.ChangeWallpaperService.NOTIFY_WALLPAPER_CHANGE";
  
  private void notifyUpdateWallpaper() {
    LogUtils.d(this, "Done, notifying for wallpaper change");
    Intent callbackIntent = new Intent(INTENT_ACTION_NOTIFY_WALLPAPER_CHANGE);
      LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(callbackIntent);
  }
}

Java Source Code List

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