RestAdapter (retrofit) not resolving in android

Question

So I am trying to use Retrofit for my project. As the site says I have included compile \'com.squareup.retrofit:retrofit:2.0.0-beta1\' in build.gradle

Answer 1

If you want to run your code you need to use older version of Retrofit.

compile 'com.squareup.retrofit:retrofit:1.9.0'

But you are using

compile 'com.squareup.retrofit:retrofit:2.0.0-beta1'

So you need to change your code like this.

Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://api.github.com")
.build();`

for complete documentation please check RetroFit square

Answer 2

There is a change in the API in version 2. This is how you do it in this version:

Retrofit retrofit = new Retrofit.Builder()
    .baseUrl("https://api.github.com")
    .build();

GitHubService service = retrofit.create(GitHubService.class);

Please refer here for more information: Retrofit 2 home page

and these slides: Retrofit 2 presentation

Answer 3

In Retrofit 2.0, Converter is not included in the package anymore. You need to plug a Converter in yourself or Retrofit will be able to accept only the String result. As a result, Retrofit 2.0 doesn't depend on Gson anymore.

If you want to accept json result and make it parse into DAO, you have to summon Gson Converter as a separate dependency.

compile 'com.squareup.retrofit:converter-gson:2.0.0-beta2'

And plug it in through addConverterFactory. Please note that RestAdapter is now also renamed to Retrofit.

Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("http://api.nuuneoi.com/base/")
        .addConverterFactory(GsonConverterFactory.create())
        .build();

service = retrofit.create(APIService.class);

more info: https://inthecheesefactory.com/blog/retrofit-2.0/en

Answer 4

You have two options:

1) Use stable Retrofit 1

This has the RestAdapter class you need.

compile 'com.squareup.retrofit:retrofit:1.9.0'

2) Migrate to Retrofit 2

The RestAdapter class was renamed to Retrofit and the API was completely remade. Read more in Jake Wharton's presentation.

compile 'com.squareup.retrofit:retrofit:2.0.0-beta1'

As of June 30 2016 the latest version is 2.1.0 obtained by

compile 'com.squareup.retrofit2:retrofit:2.1.0'

Please check http://square.github.io/retrofit/ for updates.