Retrofit Params: Array of Arrays (Array of key-value pairs)

Question

I need to make GET request using Retrofit and one of the parameters is an array of key-value par, or actually, an array of arrays, that looks like this:

 [ [1, 10], [50, 100] ]

I figured out how to perform this request in POSTMAN:

Key: durations[0][0] Value: 1
Key: durations[0][1] Value: 10

and so on. However, I have no idea ho to represent this for Retrofit. Thank you for help.

EDIT:

I tried to represent it as @Query("durations[]") List<List<Integer>> duration; Single entry is a List with two values, start and end. No luck.

please, first see this answer stackoverflow.com/questions/41590454/… — asdfg
– asdfg, Commented Feb 19, 2017 at 8:13
I know how to pass an array of primitive values and this is applied in my app. I think this is different because this turns into foo[]=val1&foo[]=val2&foo[]=val3, however array of arrays turns into durations[0][0]=200&durations[0][1]=300&durations[1][0]=300&durations[1][1]=400 and I do not know how to represent it for retrofit. First case it List<Integer>, but what this would be? — Sermilion
– Sermilion, Commented Feb 19, 2017 at 8:39

Christian Amani · Accepted Answer · 2017-02-19 11:30:58Z

0

I advise you to use this method

Object get( @Query("durations[0][0]") int value1,@Query("durations[0][1]") int value2,
@Query("durations[1][0]") int value3,@Query("durations[1][1]") int value4)

answered Feb 19, 2017 at 11:30

Christian Amani

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Sermilion · Accepted Answer · 2017-02-28 15:13:14Z

0

So basically this is how I solved this. I just manually built the parameter strings I need and put it into a Map along with value. And in your Retrofit interface make filed as @QueryMap:

@QueryMap Map<String, Integer> durations,

Have a look at my method that makes parameters:

public void prepareDurations(Pair<Integer, Integer> durationValues) {
    Map<String, Integer> paramsMap = new HashMap<>();
    if(durationValues!=null) {
        paramsMap.put("durations[0][0]", durationValues.first);
        paramsMap.put("durations[0][1]", durationValues.second);
        setDuration(paramsMap);
    }else {
        setDuration(new HashMap<>());
    }
}

answered Feb 28, 2017 at 15:13

Sermilion

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