Android Open Source - ColorWallpaper Download Service

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Back to project page ColorWallpaper.

License

The source code is released under:

Licensed under the Expat License. Copyright (C) 2013 Peter Occil Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the...

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Java Source Code

package com.upokecenter.android.net;
/*from  w ww.  ja  v  a 2  s .  co m*/
import java.io.File;

import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;

import com.upokecenter.android.util.AppManager;
import com.upokecenter.android.util.StorageUtility;
import com.upokecenter.net.IOnFinishedListener;
import com.upokecenter.net.IResponseListener;
import com.upokecenter.net.LightweightDownloadService;
import com.upokecenter.util.IAction;
import com.upokecenter.util.IndexedObjectList;

public final class DownloadService extends Service {

  private static final IndexedObjectList<IResponseListener<Object>> cbobjects=new IndexedObjectList<IResponseListener<Object>>();
  private static final IndexedObjectList<IOnFinishedListener<Object>> finobjects=new IndexedObjectList<IOnFinishedListener<Object>>();


  private static int sendObject(IResponseListener<Object> o) {
    return cbobjects.sendObject(o);
  }
  private static int sendObject(IOnFinishedListener<Object> o) {
    return finobjects.sendObject(o);
  }
  private static Handler handler=null;
  private static Object syncRoot=new Object();
  private static final String EXTRA_URL = "com.upokecenter.android.extra.URL";
  private static final String EXTRA_PROCESS_RESPONSE = "com.upokecenter.android.extra.PROCESS_RESPONSE";
  private static final String EXTRA_ON_FINISHED = "com.upokecenter.android.extra.ON_FINISHED";

  public DownloadService(){
    super();
  }

  public static void sendRequest(
      Context context,
      String url,
      IResponseListener<Object> callback,
      IOnFinishedListener<Object> onFinished
      ){
    if(context==null)
      throw new IllegalArgumentException();
    Intent intent = new Intent(context, DownloadService.class);
    intent.putExtra(DownloadService.EXTRA_URL,url);
    intent.putExtra(DownloadService.EXTRA_PROCESS_RESPONSE,DownloadService.sendObject(callback));
    intent.putExtra(DownloadService.EXTRA_ON_FINISHED,DownloadService.sendObject(onFinished));
    context.startService(intent);
  }

  public static void shutdown(Context context){
    context.stopService(new Intent(context, DownloadService.class));
  }

  LightweightDownloadService dservice=null;

  @Override
  public void onCreate(){
    AppManager.initialize(this);
    synchronized(syncRoot){
      if(handler==null) {
        handler=new Handler(getMainLooper());
      }
    }
    File cachePath=StorageUtility.getCachePath(this,null);
    File privateCachePath=StorageUtility.getPrivateCachePath(this,null);
    long defaultSize=StorageUtility.getDefaultCacheSize(this);
    dservice=new LightweightDownloadService(cachePath,privateCachePath,defaultSize);
    dservice.setResultPoster(new IAction<Runnable>(){
      @Override
      public void action(Runnable... parameters) {
        Handler h=null;
        synchronized(syncRoot){
          h=handler;
        }
        h.post(parameters[0]);
      }
    });
    super.onCreate();
  }

  @Override public void onDestroy(){
    dservice.shutdown();
  }

  @SuppressWarnings("unchecked")
  private void startEvent(Intent intent){
    if(intent==null)return;
    final Bundle bundle=new Bundle(intent.getExtras());
    Object cb=cbobjects.receiveObject(bundle.getInt(EXTRA_PROCESS_RESPONSE,-1));
    Object fin=finobjects.receiveObject(bundle.getInt(EXTRA_ON_FINISHED,-1));
    final IResponseListener<Object> cbobj=(cb==null) ? null : (IResponseListener<Object>)cb;
    final IOnFinishedListener<Object> finobj=(fin==null) ? null : (IOnFinishedListener<Object>)fin;
    final String url=bundle.getString(EXTRA_URL);
    dservice.sendRequest(url,cbobj,finobj);
  }

  @Override public int onStartCommand(Intent intent, int flags, int startID){
    startEvent(intent);
    return START_STICKY;
  }

  @Override public void onStart(Intent intent, int startID){
    startEvent(intent);
  }

  @Override
  public IBinder onBind(Intent arg0){
    return null;
  }
}

Java Source Code List