android - RetrofitError 异常

Question

我有以下代码...

public interface GithubService {
    @GET("/repos/{owner}/{repo}/contributors")
    public List<Contributor> contributors(@Path("owner") String owner, @Path("repo") String repo);
}

RepositoresBusinessController.class

RestAdapter restAdapter = new RestAdapter.Builder().setEndpoint("https://api.github.com").build();
GithubService service = restAdapter.create(GithubService.class);
listContributors = service.contributors(username, "retrofit");
Log.d("List Contributors", listContributors+" ");

贡献者类

public class Contributor {
    String login;
    int contributions;
}

并且不要在 Log 中打印并且应用程序会退出......有一部分异常

 725-725/com.example.githubapiexample E/AndroidRuntime﹕ FATAL EXCEPTION: main
 code here`retrofit.RetrofitError
 at retrofit.RestAdapter$RestHandler.invokeRequest(RestAdapter.java:395)
 at retrofit.RestAdapter$RestHandler.invoke(RestAdapter.java:240)

有人知道为什么吗？谢谢

Answer 1

Retrofit 具有异步回调机制，无需使用 AsyncTask 或服务。更改您的界面以使用回调而不是返回类型——

public interface GithubService {
    @GET("/repos/{owner}/{repo}/contributors")
    public void contributors(@Path("owner") String owner, @Path("repo") String repo,
            Callback<List<Contributor>> contributors);
}

你可以这样调用它——

service.contributors(username, project, new Callback<List<Contributor>>() {
            @Override
            public void success(List<Contributor> contributors, Response response) {
                // got the list of contributors
            }

            @Override
            public void failure(RetrofitError error) {
                // Code for when something went wrong 
            }
        });