问Picasso内存/磁盘缓存

EN

private Picasso createPicasso(Context context){

        OkHttpClient picassoClient = new OkHttpClient();

        picassoClient.interceptors().add(new Interceptor() {
            @Override
            public Response intercept(Interceptor.Chain chain) throws IOException {

                try {

                    Map authHeaders = BackendServiceClient.buildAuthHeaders();

                    Request newRequest = chain.request().newBuilder()
                            .addHeader("Authorization", (String) authHeaders.get("Authorization"))
                            .build();
                    return chain.proceed(newRequest);

                } catch (CredentialNotStoredException e) {
                    e.printStackTrace();
                }
                return chain.proceed(chain.request().newBuilder().build());
            }
        });

        return new Picasso.Builder(context)
                .downloader(new OkHttpDownloader(picassoClient))
                .build();
    }

  ImageDownloader.getSharedInstance().getPicasso(context)
            .load(url)
            .placeholder(R.drawable.head_big) //
            .error(R.drawable.head_big) //
            .tag(context)
            .into(holder.personPhoto);