Add an array as request parameter with Retrofit 2

Question

I\'m looking for way to add an int array (e.g [0,1,3,5]) as parameter in a GET request with retrofit 2. Then, the generated url should be like this : http:/

Answer 1

Use Iterable to encapsulate the integer list, or use a two-dimensional integer array.

• How to define:

  public interface ServerService {
      @GET("service")
      Call method1(@Query("array") Iterable> array);
  
      @GET("service")
      Call method2(@Query("array") Integer[][] array);
  }
  

• How to use:

  Retrofit retrofit = new Retrofit.Builder()
      .baseUrl("http://server/")
      .addConverterFactory(GsonConverterFactory.create())
      .build();
  ServerService service = retrofit.create(ServerService.class);
  
  // Use the first method.
  List data1 = Arrays.asList(0,1,3,5);
  Iterable array1 = Arrays.asList(data1);
  Call method1Call = service.method1(array1);
  
  // Use the second method.
  Integer[] data2 = new Integer[]{0,1,3,5};
  Integer[][] array2 = new Integer[][]{data2};
  Call method2Call = service.method2(array2);
  
  // Execute enqueue() or execute() of method1Call or method2Call.
  

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Please refer to the code ParameterHandler.java of Retrofit2 for the reason why the way can solve the problem.