android - How to read nested JSON arrays with Retrofit and Jackson? -


in android application use retrofit describe internal api:

@provides @singleton productsservice provideproductsservice() {     objectmapper objectmapper = new objectmapper();     objectmapper.setpropertynamingstrategy(         propertynamingstrategy.camel_case_to_lower_case_with_underscores);     restadapter.builder restadapterbuilder = new restadapter.builder()         .setconverter(new jacksonconverter(objectmapper));     return restadapterbuilder         .setendpoint(endpoints.newfixedendpoint("http://192.168.1.1"))         .build()         .create(productsservice.class);

in order read productlevels created following interface:

public interface productsservice {      @get("/api/products/{productid}/levels/")     public observable<list<readproductlevelsresponse>> readproductlevels(             @path("productid") int productid     );  }

here json string served backend:

[     [         1427378400000,         553     ],     [         1427382000000,         553     ] ]

when try read json data in empty readproductlevelsresponse class following error occurs:

com.fasterxml.jackson.databind.jsonmappingexception: can not deserialize instance of readproductlevelsresponse out of start_array token @ [source: retrofit.exceptioncatchingtypedinput$exceptioncatchinginputstream@11ae0f16; line: 1, column: 2] (through reference chain: java.util.arraylist[0])

how can read json data readproductlevelsresponse class?

i figured out by answer have use list<list<double>> response type.

public interface productsservice {      @get("/api/products/{productid}/levels/")     public observable<list<list<double>>> readproductlevels(             @path("productid") int productid     );  }

follow question: how transform nested list of double values java class using rxjava?


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