Inserting android POJO in firebase results in json list of values

Question

I am using the following class in my android project to upload data into its firebase backend.

public class IATFPojo {

public Double ecc, ecc2;
public boolean prenhes, ressinc;
public Long diasp, cl;
public String localiza, datacob;

public IATFPojo() {}

public IATFPojo(double ecc, boolean prenhes, boolean ressinc, long diasp, String localiza, String datacob, double ecc2, long cl){

    this.ecc = ecc;
    this.ecc2 = ecc2;

    this.prenhes = prenhes;
    this.ressinc = ressinc;

    this.diasp = diasp;
    this.cl = cl;

    this.localiza = localiza;
    this.datacob = datacob;
}

public Double getEcc() {
    return ecc;
}

public Double getEcc2() {
    return ecc2;
}

public boolean isPrenhes() {
    return prenhes;
}

public boolean isRessinc() {
    return ressinc;
}

public Long getDiasp() {
    return diasp;
}

public Long getCl() {
    return cl;
}

public String getLocaliza() {
    return localiza;
}

public String getDatacob() {
    return datacob;
}
}

And I am inserting it in firebase like this:

DatabaseReference myRef = FirebaseDatabase.getInstance().getReference();

IATFPojo pojo = new IATFPojo(
                    //ecc, prenhes, ressinc, diasp, localiza, datacob, ecc2, cl
                    (map.get("IATF6")).length() > 0 ? Double.parseDouble(map.get("IATF6")) : 0,
                    Integer.parseInt(map.get("IATF20")) > 1,
                    Integer.parseInt(map.get("IATF5")) > 1,
                    Long.parseLong(map.get("IATF30")),
                    map.get("IATF23"),
                    map.get("IATF1"),
                    (map.get("IATF22")).length() > 0 ? Double.parseDouble(map.get("IATF22")) : 0,
                    Long.parseLong(map.get("IATF21"))
            );

myRef.child(uid +"/MULTIPARA").child(map.get("IATF1")+"_"+map.get("SUI")).setValue(pojo);

It creates a node with the user id (uid) and another node with the reference (MULTIPARA), and then the child which contains the data using the format date_animal id. The problem is that the data is being stored like this in the firebase:

And as I understood the data should have the IATFPojo keys like this:

2016-11-11_     A    335

ecc: 2.75

ecc2: 3

prenhes: true

ressinc : false

diasp: 52

cl: -1

localiza: "16 IATF BV 5"

datacob: "2016-11-11"

Am I missing something in the configuration of the class, or in firebase ?

Answer 1

Cricket_007's comments lead me to the answer. I have created a new package in my android project to include all POJO classes to upload to firebase and then included the following line to my proguard rules:

-keepnames class newPackage.** { *; }

So now all my android POJOs are being uploaded to firebase with the correct field keys.

Thank you cricket_007.