android - Firebase serialization names -

i created object send data firebase. example, use firebase user example:

public class user {     public string username;     public string email;      public user() {         // default constructor required calls datasnapshot.getvalue(user.class)     }      public user(string username, string email) {         this.username = username;         this.email = email;     } } 

i want encode property names sent firebase. keys sent using variable names. want encode keys useraname , email, gson doing. don't want change variable names.

@serializatename("username") public string username; @serializatename("username") public string email; 

i used @serializatename(), not working. same @propertyname used firebse, not working. can use in order serializare custom keys?

update 1

public class pojo {     @propertyname("guid")     public string guid;     @propertyname("name")    public string name;     public string getpojoguid() {        return guid;    }     public void setpojoguid(string guid) {        this.guid = guid;    } } 

as can see in image, saves keys based on variable names. changed property name annotation 1 field , when save it, ignores it, when change variable name, save new entry key new varialbe name.

in this documentation method tomap(). if that, working (is not convenient me), not working @propertyname.

update 2

if mark getters , setters @exclude , class @ignoreextraproperties working. don't have use tomap() method example documetation. using specified name @propertyname. not thing in opinion, create confuses.

the firebase sdk uses annotation finds property whenever gets or sets value. means need consider how firebase gets/sets value, , annotate each place looks.

since you're declaring getter method, firebase use value of property. use field setting value. annotation needs on both:

public class pojo {    @propertyname("guid")    public string guid;     @propertyname("name")    public string name;     @propertyname("guid")    public string getpojoguid() {        return guid;    }     @propertyname("guid")    public void setpojoguid(string guid) {        this.guid = guid;    } } 

if you'd have getters , setters, annotation need on those, not on fields anymore:

public class pojo {    private string guid;    private string name;     @propertyname("guid")    public string getpojoguid() {        return guid;    }     @propertyname("guid")    public void setpojoguid(string value) {        guid = value;    }     @propertyname("name")    public void setpojoguid(string guid) {        this.guid = guid;    }     @propertyname("name")    public void setpojoguid(string value) {        name = value;    } }