Android Picasso library, How to add authentication headers?

Question

I have tried setting a custom OkHttpClient with a custom Authenticator, however as the doc says: \"Responds to authentication challenges from the remote web or proxy server.

Answer 1

You can also add Authentication as suggested in the documentation of OkHttp

Just add this client

final OkHttpClient client = new OkHttpClient.Builder()
                .authenticator(new Authenticator() {
                    @Override
                    public Request authenticate(Route route, Response response) throws IOException {
                        String credential = okhttp3.Credentials.basic("user", "pw");
                        return response.request().newBuilder()
                                .header("Authorization", credential)
                                .build();
                    }
                })
                .build();

to Picasso like this:

final Picasso picasso = new Picasso.Builder(this)
                .downloader(new OkHttp3Downloader(client))
                .build();
Picasso.setSingletonInstance(picasso);

The only dependency needed is:

compile 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.0.2'