Wsrtjtyk

newbie here... i was developing app that send my data to api via retrofit. my code was working but it sends 1 data input only at the time.... in my case, i've like to do is I want to get more saved data in my sqlite (example 5 data saved) and send it all on api via json object.

This is my Activity:

                 DatabaseHelper databaseHelper2 = new 

                 DatabaseHelper(getApplicationContext());

                    SQLiteDatabase db2 = 

                    databaseHelper2.getWritableDatabase();

                    Cursor cursor = 

                    databaseHelper2.retrieveSettingFromLocalDatabase(db2);



                    while (cursor.moveToNext()) {

                        ADDRESS = 



    cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_ADDRESS));

                        PORT = 

    cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_PORT));

                        TIMEINTERVAL=cursor.getString

    (cursor.getColumnIndex(DatabaseHelper.SETTING_TIME_INTERVAL));

                    }

                    portInts=Integer.parseInt(PORT);



                    MapDetails mapDetails = new MapDetails(gg, lat, lon, 

        well, "0", portInts); //Datas ive get to send in api



                    List<MapDetails> data = new ArrayList<>();

                    data.add(mapDetails);



                    Retrofit.Builder builder = new Retrofit.Builder()

                            .baseUrl("http://" + ADDRESS + ":" + PORT) 

                            .addConverterFactory(GsonConverterFactory.create());



                    Retrofit retrofit = builder.build();



                    Api locate = retrofit.create(Api.class);



                    Call<MapDetails> call = locate.mapDetailLocation(data);     



                    call.enqueue(new Callback<MapDetails>() {

                        @Override

                        public void onResponse(Call<MapDetails> call, Response<MapDetails> response) {

                            Snackbar.make(view, "" + response,

                                    Snackbar.LENGTH_INDEFINITE)

                                    .setAction("Action", null).show();

                        }



                        @Override

                        public void onFailure(Call call, Throwable t) {

                            Snackbar.make(view, "" + t.getMessage(),

                                    Snackbar.LENGTH_INDEFINITE)

                                    .setAction("Action", null).show();



                        }

                    });

This is my code in API:

 public interface Api {

   @POST("/api/Database/NewLocation")

      Call<MapDetails> mapDetailLocation(@Body List<MapDetails> mapDetails)



 }

This is my sample Client:

     public class MapDetails {

        @SerializedName("SerialNumber")

        @Expose

        private String SerialNumber;

        @SerializedName("Coordinate1")

        @Expose

        private String Coordinate1;

        @SerializedName("Coordinate2")

        @Expose

        private String Coordinate2;

        @SerializedName("DateTime")

        @Expose

        private String DateTime;

        @SerializedName("Speed")

        @Expose

        private String Speed;

        @SerializedName("Port")

        @Expose

        private int Port;



        public MapDetails(String serialNumber, String coordinate1, String                 

         coordinate2, String dateTime, String speed, int port) {

            SerialNumber = serialNumber;

            Coordinate1 = coordinate1;

            Coordinate2 = coordinate2;

            DateTime = dateTime;

            Speed = speed;

            Port = port;

        }



        public String getSerialNumber() {

            return SerialNumber;

        }



        public void setSerialNumber(String serialNumber) {

            SerialNumber = serialNumber;

        }



        public String getCoordinate1() {

            return Coordinate1;

        }



        public void setCoordinate1(String coordinate1) {

            Coordinate1 = coordinate1;

        }



        public String getCoordinate2() {

            return Coordinate2;

        }



        public void setCoordinate2(String coordinate2) {

            Coordinate2 = coordinate2;

        }



        public String getDateTime() {

            return DateTime;

        }



        public void setDateTime(String dateTime) {

            DateTime = dateTime;

        }



        public String getSpeed() {

            return Speed;

        }



        public void setSpeed(String speed) {

            Speed = speed;

        }



        public int getPort() {

            return Port;

        }



        public void setPort(int port) {

            Port = port;

        }



    }

this is my sqlite database ive like to retrieve:

this is the sample posting ive created at the top

but in my case, ive like to do is this one, getting the saved data from my database and send it like this,:

If I understood your question properly, you need to send JSONArray as payload for the request. But, you made a little mistake while preparing payload from SQLite database. @Mike T pointed out that mistake in his answer to your question.

Follow these codes to fix the problem.

DatabaseHelper databaseHelper2 = new DatabaseHelper(getApplicationContext());

SQLiteDatabase db2 = databaseHelper2.getWritableDatabase();

Cursor cursor = databaseHelper2.retrieveSettingFromLocalDatabase(db2);



List<MapDetails> data = new ArrayList<>(); // declare ArrayList outside and before while loop



while (cursor.moveToNext()) {

    ADDRESS = cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_ADDRESS));

    PORT = cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_PORT));

    TIMEINTERVAL = cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_TIME_INTERVAL));



    // pass arguments to MapDetails class constructor



    portInts = Integer.parseInt(PORT);



    MapDetails mapDetails = new MapDetails(gg, lat, lon, well, "0", portInts); //Datas ive get to send in api



    // add prepared data to ArrayList



    data.add(mapDetails);

}



// and finally execute network call



Retrofit.Builder builder = new Retrofit.Builder()

                        .baseUrl("http://" + ADDRESS + ":" + PORT) 

                        .addConverterFactory(GsonConverterFactory.create());



Retrofit retrofit = builder.build();



Api locate = retrofit.create(Api.class);



Call<MapDetails> call = locate.mapDetailLocation(data);     

call.enqueue(new Callback<MapDetails>() {

    @Override

    public void onResponse(Call<MapDetails> call, Response<MapDetails> response) {



        Snackbar.make(view, "" + response, Snackbar.LENGTH_INDEFINITE).setAction("Action", null).show();



    }



    @Override

    public void onFailure(Call call, Throwable t) {



        Snackbar.make(view, "" + t.getMessage(), Snackbar.LENGTH_INDEFINITE).setAction("Action", null).show();



    }

});

PS: I'm not sure why are you taking ADDRESS and PORT from SQLite database. If they're same in every single row you don't need to take it from database right?

The reason why only one is being sent is that you are sending outside of the while loop that traverses the Cursor, so only the last is sent.

That is you have :-

while (cursor.moveToNext()) {

    ADDRESS = cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_ADDRESS));

    PORT = cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_PORT));

    TIMEINTERVAL=cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_TIME_INTERVAL));

 }

So say the query extracted a Cursor with 10 rows as address 1,2,3....10 (for explantory purposes) then

The loop is entered ADDRESS is set to 1, the next iteration sets it to 2, the next to 3 ..... and finally ADDRESS is set to 10 (same for PORT and TIMEINTERVAL)

After the loop the data is sent so only one is sent (ADDRESS 10).

What you need is along the lines of :-

List<MapDetails> data = new ArrayList<>();

MapDetails mapDetails

Retrofit.Builder builder;

Retrofit retrofit;

Call<MapDetails> call;

Api locate;



while (cursor.moveToNext()) {

    ADDRESS = cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_ADDRESS));

    PORT = cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_PORT));

    TIMEINTERVAL=cursor.getString(cursor.getColumnIndex(DatabaseHelper.SETTING_TIME_INTERVAL));



    portInts=Integer.parseInt(PORT);

    mapDetails = new MapDetails(gg, lat, lon, well, "0", portInts);

    data.clear(); //<<<<<<<< remove previous entries if required????

    data.add(mapDetails);

    builder = new Retrofit.Builder()

            .baseUrl("http://" + ADDRESS + ":" + PORT) 

            .addConverterFactory(GsonConverterFactory.create());

    retrofit = builder.build();

    locate = retrofit.create(Api.class);

    call = locate.mapDetailLocation(data);     

    call.enqueue(new Callback<MapDetails>() {

        @Override

        public void onResponse(Call<MapDetails> call, Response<MapDetails> response) {

            Snackbar.make(view, "" + response,

            Snackbar.LENGTH_INDEFINITE).setAction("Action", null).show();

        }



        @Override

        public void onFailure(Call call, Throwable t) {

            Snackbar.make(view, "" + t.getMessage(),

            Snackbar.LENGTH_INDEFINITE).setAction("Action", null).show();

     }

}

• 
  Note the above is in-principle code. it has not been checked or tested and may therefore contain some errors.


• It may be that you can send an entire set e.g. data with populated in which case you may only need up to data.add(mapDetails); in the loop and then have the following code outside the loop.