com.squareup.picasso.Downloader Java Examples

@Provides @Singleton Picasso providePicasso(Context context, Downloader downloader,
    ImageRequestHandler imageRequestHandler, ShowRequestHandler showRequestHandler,
    SeasonRequestHandler seasonRequestHandler, EpisodeRequestHandler episodeRequestHandler,
    MovieRequestHandler movieRequestHandler, PersonRequestHandler personRequestHandler) {
  Picasso.Builder builder =
      new Picasso.Builder(context).requestTransformer(new ImageRequestTransformer(context))
          .addRequestHandler(imageRequestHandler)
          .addRequestHandler(showRequestHandler)
          .addRequestHandler(seasonRequestHandler)
          .addRequestHandler(episodeRequestHandler)
          .addRequestHandler(movieRequestHandler)
          .addRequestHandler(personRequestHandler)
          .downloader(downloader);

  if (BuildConfig.DEBUG) {
    builder.listener(new Picasso.Listener() {
      @Override public void onImageLoadFailed(Picasso picasso, Uri uri, Exception exception) {
        Timber.d(exception);
      }
    });
  }

  return builder.build();
}
 

@Override public RequestHandler.Result load(Request request, int networkPolicy)
    throws IOException {
  final String baseUrl = getBaseUrl();
  if (TextUtils.isEmpty(baseUrl)) {
    return null;
  }

  String path = transform(request, request.uri);

  if (TextUtils.isEmpty(path)) {
    return null;
  }

  Downloader.Response response = downloader.load(Uri.parse(path), networkPolicy);
  if (response == null) {
    return null;
  }

  InputStream is = response.getInputStream();
  if (is == null) {
    return null;
  }

  return new RequestHandler.Result(is, Picasso.LoadedFrom.NETWORK);
}
 

@Test public void networkPolicyNoCache() throws Exception {
  MockResponse response =
      new MockResponse().setHeader("Cache-Control", "max-age=31536000").setBody("Hi");
  server.enqueue(response);

  Downloader.Response response1 = downloader.load(uri, 0);
  assertThat((Boolean) cached.get(response1)).isFalse();
  // Exhaust input stream to ensure response is cached.
  Okio.buffer(Okio.source(response1.getInputStream())).readByteArray();

  // Enqueue the same response again but this time use NetworkPolicy.NO_CACHE.
  server.enqueue(response);

  Downloader.Response response2 = downloader.load(uri, NO_CACHE);
  // Response should not be coming from cache even if it was cached previously.
  assertThat((Boolean) cached.get(response2)).isFalse();
}
 

@Test public void networkPolicyNoCache() throws Exception {
  MockResponse response =
      new MockResponse().setHeader("Cache-Control", "max-age=31536000").setBody("Hi");
  server.enqueue(response);

  Downloader.Response response1 = downloader.load(uri, 0);
  assertThat((Boolean) cached.get(response1)).isFalse();
  // Exhaust input stream to ensure response is cached.
  Okio.buffer(Okio.source(response1.getInputStream())).readByteArray();

  // Enqueue the same response again but this time use NetworkPolicy.NO_CACHE.
  server.enqueue(response);

  Downloader.Response response2 = downloader.load(uri, NO_CACHE);
  // Response should not be coming from cache even if it was cached previously.
  assertThat((Boolean) cached.get(response2)).isFalse();
}
 

@Test public void cachedResponse() throws Exception {
  server.enqueue(new MockResponse()
      .setHeader("Cache-Control", "max-age=31536000")
      .setBody("Hi"));

  Downloader.Response response1 = downloader.load(uri, 0);
  assertThat((Boolean) cached.get(response1)).isFalse();
  // Exhaust input stream to ensure response is cached.
  Okio.buffer(Okio.source(response1.getInputStream())).readByteArray();

  Downloader.Response response2 = downloader.load(uri, OFFLINE);
  assertThat((Boolean) cached.get(response2)).isTrue();
}
 

@Override
protected byte[] doInBackground(Void... params) {
    try {
        // Grab an input stream to the image
        OkHttpDownloader downloader = new OkHttpDownloader(getContext());
        Downloader.Response response = downloader.load(Uri.parse(url), 0);

        // Read the image into a byte array
        return Okio.buffer(Okio.source(response.getInputStream())).readByteArray();
    } catch (Exception e) {
        Log.d(ImageFragment.class.getSimpleName(), "Error fetching image", e);
        return null;
    }
}
 

@Test public void throwsResponseException() throws Exception {
  server.enqueue(new MockResponse().setStatus("HTTP/1.1 401 Not Authorized"));

  try {
    downloader.load(uri, 0);
    fail("Expected ResponseException.");
  } catch (Downloader.ResponseException e) {
    assertThat(e).hasMessage("401 Not Authorized");
  }
}
 

@Test public void offlineStaleResponse() throws Exception {
  server.enqueue(new MockResponse()
      .setHeader("Cache-Control", "max-age=1")
      .setHeader("Expires", "Mon, 29 Dec 2014 21:44:55 GMT")
      .setBody("Hi"));

  Downloader.Response response1 = downloader.load(uri, 0);
  assertThat((Boolean) cached.get(response1)).isFalse();
  // Exhaust input stream to ensure response is cached.
  Okio.buffer(Okio.source(response1.getInputStream())).readByteArray();

  Downloader.Response response2 = downloader.load(uri, OFFLINE);
  assertThat((Boolean) cached.get(response2)).isTrue();
}
 

@Test public void cachedResponse() throws Exception {
  server.enqueue(new MockResponse()
      .setHeader("Cache-Control", "max-age=31536000")
      .setBody("Hi"));

  Downloader.Response response1 = downloader.load(uri, 0);
  assertThat((Boolean) cached.get(response1)).isFalse();
  // Exhaust input stream to ensure response is cached.
  Okio.buffer(Okio.source(response1.getInputStream())).readByteArray();

  Downloader.Response response2 = downloader.load(uri, OFFLINE);
  assertThat((Boolean) cached.get(response2)).isTrue();
}
 

@Before public void setUp() throws Exception {
  downloader = new OkHttp3Downloader(temporaryFolder.getRoot());
  uri = Uri.parse(server.url("/").toString());

  cached = Downloader.Response.class.getDeclaredField("cached");
  cached.setAccessible(true);
}
 

@Test public void throwsResponseException() throws Exception {
  server.enqueue(new MockResponse().setStatus("HTTP/1.1 401 Not Authorized"));

  try {
    downloader.load(uri, 0);
    fail("Expected ResponseException.");
  } catch (Downloader.ResponseException e) {
    assertThat(e).hasMessage("401 Not Authorized");
  }
}
 

@Test public void offlineStaleResponse() throws Exception {
  server.enqueue(new MockResponse()
      .setHeader("Cache-Control", "max-age=1")
      .setHeader("Expires", "Mon, 29 Dec 2014 21:44:55 GMT")
      .setBody("Hi"));

  Downloader.Response response1 = downloader.load(uri, 0);
  assertThat((Boolean) cached.get(response1)).isFalse();
  // Exhaust input stream to ensure response is cached.
  Okio.buffer(Okio.source(response1.getInputStream())).readByteArray();

  Downloader.Response response2 = downloader.load(uri, OFFLINE);
  assertThat((Boolean) cached.get(response2)).isTrue();
}
 

@Before public void setUp() throws Exception {
  downloader = new OkHttp3Downloader(temporaryFolder.getRoot());
  uri = Uri.parse(server.url("/").toString());

  cached = Downloader.Response.class.getDeclaredField("cached");
  cached.setAccessible(true);
}
 

@Test public void readsContentLengthHeader() throws Exception {
  server.enqueue(new MockResponse().addHeader("Content-Length", 1024));

  Downloader.Response response = downloader.load(uri, 0);
  assertThat(response.getContentLength()).isEqualTo(1024);
}
 

@Test public void readsContentLengthHeader() throws Exception {
  server.enqueue(new MockResponse().addHeader("Content-Length", 1024));

  Downloader.Response response = downloader.load(uri, 0);
  assertThat(response.getContentLength()).isEqualTo(1024);
}
 

public ImageRequestHandler(Context context, ConfigurationService configurationService,
    Downloader downloader) {
  super(context, configurationService);
  this.downloader = downloader;
}
 

@Provides @Singleton Downloader provideDownloader(@Named("Images") OkHttpClient okClient) {
  return new OkHttp3Downloader(okClient);
}
 

@Provides @Singleton ImageRequestHandler provideImageRequestHandler(Context context,
    ConfigurationService configurationService, Downloader downloader) {
  return new ImageRequestHandler(context, configurationService, downloader);
}