.fit file example compatible with Garmin Connect

I have found the solution by my self..
The example file activity_developerdata.fit can be uploaded to Garmin Connect, so I checked every field created in activity_developerdata.csv and the respected code was easy to implement.

This is the example code for Java

public static long getDate() {
Calendar d1 = new GregorianCalendar(1989, 11, 31, 0, 0, 0);
Date today = new Date();
long diff = Math.abs(today.getTime() - d1.getTime().getTime());
return (diff/1000);
}

public void TestFIT() {
FileEncoder encode;
try {
encode = new FileEncoder(new java.io.File("test" + android.text.format.DateFormat.format("_dd_HHmmss", new Date()).toString() + ".fit"), Fit.ProtocolVersion.V1_0);
} catch (FitRuntimeException e) {
System.err.println("Error opening file .fit");
return;
}

long lStartTime = getDate();

//Generate FileIdMessage
//Data,0,file_id,type,"4",,manufacturer,"255",,product,"0",,time_created,"968191204",,serial_number,"468127667",,
FileIdMesg fileIdMesg = new FileIdMesg(); // Every FIT file MUST contain a 'File ID' message as the first message
fileIdMesg.setType(com.garmin.fit.File.ACTIVITY );
fileIdMesg.setManufacturer(Manufacturer.DEVELOPMENT);
fileIdMesg.setProduct(0);
fileIdMesg.setTimeCreated(new com.garmin.fit.DateTime( lStartTime ));
fileIdMesg.setSerialNumber(12345L);
encode.write(fileIdMesg);

// Data,0,device_info,device_index,"0",,manufacturer,"255",,product,"0",,product_name,"FIT Cookbook",,serial_number,"468127667",,software_version,"1.0",,timestamp,"968191204",s,
com.garmin.fit.DeviceInfoMesg lDeviceInfo = new DeviceInfoMesg();
lDeviceInfo.setDeviceIndex((short)0);
lDeviceInfo.setManufacturer(Manufacturer.DEVELOPMENT);
lDeviceInfo.setProduct(0);
lDeviceInfo.setProductName("Test");
lDeviceInfo.setSerialNumber(12345L);
lDeviceInfo.setSoftwareVersion(1.0f);
lDeviceInfo.setTimestamp(new com.garmin.fit.DateTime( lStartTime ));
encode.write(lDeviceInfo);

//Data,0,event,timestamp,"968191204",s,event,"0",,event_type,"0",,,,,,,,,,,,,,
com.garmin.fit.EventMesg lEvent = new EventMesg();
lEvent.setTimestamp(new com.garmin.fit.DateTime( lStartTime ));
lEvent.setEvent(Event.TIMER /*0*/);
lEvent.setEventType(EventType.START/* 0*/);
encode.write(lEvent);

// Data,0,developer_data_id,application_id,"3|2|1|0|5|4|7|6|8|9|10|11|12|13|14|15",,developer_data_index,"0",,application_version,"110",,,,,,,,,,,,,,
byte[] appId = new byte[] {
0x3, 0x2, 0x1, 0x0,
0x5, 0x4, 0x7, 0x6,
0x8, 0x9, 0x10, 0x11,
0x12, 0x13, 0x14, 0x15
};
DeveloperDataIdMesg developerIdMesg = new DeveloperDataIdMesg();
for(int i = 0; i < appId.length; i++)
{
developerIdMesg.setApplicationId(i, appId[i]);
}
developerIdMesg.setDeveloperDataIndex((short)0);
developerIdMesg.setApplicationVersion((long)110);
encode.write(developerIdMesg);

// Skipped
// Data,0,field_description,developer_data_index,"0",,field_definition_number,"0",,fit_base_type_id,"136",,field_name,"Doughnuts Earned",,units,"doughnuts",,native_mesg_num,"18",,,,,
// Data,0,field_description,developer_data_index,"0",,field_definition_number,"1",,fit_base_type_id,"2",,field_name,"Heart Rate",,units,"bpm",,native_field_num,"3",,native_mesg_num,"20",,

//Data,0,record,timestamp,"968191204",s,distance,"0.0",m,speed,"1.0",m/s,heart_rate,"126",bpm,cadence,"0",rpm,power,"150",watts,altitude,"127.0",m,enhanced_speed,"1.0",m/s,enhanced_altitude,"127.0",m,Heart Rate,"126",bpm,
//Data,0,record,timestamp,"981301968",s,position_lat,"495280430",semicircles,position_long,"-872696681",semicircles,heart_rate,"122",bpm,cadence,"88",rpm,distance,"2080.0",m,ebike_battery_level,"50",percent,temperature,"0",C,,,,
RecordMesg record = new RecordMesg();

int ii;

for (ii=0;ii<50;ii++) {

DateTime d2 = new com.garmin.fit.DateTime( lStartTime + ii);
record.setTimestamp(d2);
record.setDistance(2080f+ii);
record.setPositionLat(495280430 + ii*10);
record.setPositionLong(-872696681 + ii*10);
//record.setPositionLong(pow(2, 31) * (longitudeX) / 180.0);
//record.setPositionLat(pow(2, 31) * (latitudeY) / 180.0);

record.setHeartRate((short)100);
record.setCadence((short) 88);
record.setSpeed(2800f);
record.setPower(100+ii);
record.setAltitude((float)250+ii);
record.setEbikeBatteryLevel((short)(50-ii));
record.setTemperature((byte)(ii/2));

encode.write(record);
}

// Data,0,event,timestamp,"968194805",s,event,"0",,event_type,"4",,,,,,,,,,,,,,,,,,,,,,,
com.garmin.fit.EventMesg lEvent2 = new EventMesg();
lEvent2.setTimestamp(new com.garmin.fit.DateTime( lStartTime + ii ));
lEvent2.setEvent(Event.TIMER /*0*/);
lEvent2.setEventType(EventType.STOP_ALL/* 4*/);
encode.write(lEvent2);

// Data,0,lap,timestamp,"968194805",s,start_time,"968191204",,total_elapsed_time,"3601.0",s,total_timer_time,"3601.0",s,,,,,,,,,,,,,,,,,,,
com.garmin.fit.LapMesg lapMesg2 = new LapMesg();
lapMesg2.setTimestamp(new com.garmin.fit.DateTime(lStartTime+ii));
lapMesg2.setStartTime(new com.garmin.fit.DateTime(lStartTime));
lapMesg2.setTotalElapsedTime((float)ii);
lapMesg2.setTotalTimerTime((float)ii);
encode.write(lapMesg2);

//Data,0,session,timestamp,"968194805",s,start_time,"968191204",,total_elapsed_time,"3601.0",s,total_timer_time,"3601.0",s,sport,"2",,sub_sport,"46",,first_lap_index,"0",,num_laps,"1",,Doughnuts Earned,"3.0008333",doughnuts,,,,
com.garmin.fit.SessionMesg sessionMesg = new SessionMesg();
sessionMesg.setTimestamp(new com.garmin.fit.DateTime(lStartTime+ii));
sessionMesg.setStartTime(new com.garmin.fit.DateTime(lStartTime));
sessionMesg.setTotalElapsedTime((float)ii); //Total number of msec since timer started (includes pauses) - Todo: calculate paused time
sessionMesg.setTotalTimerTime((float)ii); //Timer Time (excludes pauses)
sessionMesg.setSport(Sport.CYCLING);
sessionMesg.setFirstLapIndex(0);
sessionMesg.setNumLaps(1);
encode.write(sessionMesg);

// Data,0,activity,timestamp,"968194805",,num_sessions,"1",,local_timestamp,"968169605",,,,,,,,,,,,,,,,,,,,,,,
com.garmin.fit.ActivityMesg activityMesg = new com.garmin.fit.ActivityMesg();
activityMesg.setTimestamp(new com.garmin.fit.DateTime(lStartTime+ii));
activityMesg.setNumSessions(1); // Always 1 session (1 workout per file)
activityMesg.setLocalTimestamp(new com.garmin.fit.DateTime(lStartTime+ii).getTimestamp());
encode.write(activityMesg);

try {
encode.close();
} catch (FitRuntimeException e) {
System.err.println("Error closing encode.");
return;
}

}