How handler classes work in Android

Question

I am new to android and was reading the demo applications on official android website. And I came across a method of Handler class named as postDelayed(Ru

Answer 1

public class ApiHandler {

  public static final String BASE_URL = "http://xxx.yyy/xx/";

  private static final long HTTP_TIMEOUT = TimeUnit.SECONDS.toMillis(120);
  private static Webservices apiService;

  public static Webservices getApiService() {

    if (apiService == null) {

        OkHttpClient okHttpClient = new OkHttpClient();
        okHttpClient.setConnectTimeout(HTTP_TIMEOUT, TimeUnit.MILLISECONDS);
        okHttpClient.setWriteTimeout(HTTP_TIMEOUT, TimeUnit.MILLISECONDS);
        okHttpClient.setReadTimeout(HTTP_TIMEOUT, TimeUnit.MILLISECONDS);

        RestAdapter restAdapter = new RestAdapter.Builder()
                .setLogLevel(RestAdapter.LogLevel.FULL)
                .setEndpoint(BASE_URL)
                .setClient(new OkClient(okHttpClient))
                .setConverter(new GsonConverter(new Gson()))
                .build();
        apiService = restAdapter.create(Webservices.class);


        /*RestAdapter.Builder builder = new RestAdapter.Builder();
        builder.setConverter(new StringConverter())
                .setEndpoint(BASE_URL)
                .setClient(new OkClient(new OkHttpClient()))
                .setLogLevel(RestAdapter.LogLevel.NONE);
        RestAdapter adapter = builder.build();

        apiService = adapter.create(Webservices.class);*/

        return apiService;
    } else {
        return apiService;
    }
  }
}