How can I return data in method from Retrofit i am confused? - retrofit2

Question

I am confused please can you help me? I read similar questions but its is not clear for me, thanks in advance for your patient and attention.
I want to return to onCreate data which retrieved from API call using Retrofit. Here is my function where i call Retrofit.
private void loadTimeZoneAPI(double latitude, double longitude, long timestamp, String apiKeyTz) {
String lat = Double.toString(latitude);
String lon = Double.toString(longitude);
String time = Long.toString(timestamp);
serviceTZ.getDataTZ(lat+","+lon, time, apiKeyTz).enqueue(new Callback<TimeZoneGoogle>() {
#Override
public void onResponse(Call<TimeZoneGoogle> call, Response<TimeZoneGoogle> response) {
TimeZoneGoogle result = response.body();
timeZone = result.getTimeZoneId();
}
#Override
public void onFailure(Call<TimeZoneGoogle> call, Throwable t) {
}
});
}
How i will return timeZone value to onCreate where i will use for calculation.

Answer 1

You need a callback listener for your data in MainActivity or any activity you have used for view.
for example:make interface like this
interface RetrofitListener{
onDataLoad(TimeZoneGoogle timeZoneGoogle);
}
then give a reference in Activity from which you are calling Retrofit class
public class ActivityTest extends AppCompatActivity implements ActivityTest.RetrofitListener {
RetrofitCall retrofitListener;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
retrofitListener = new RetrofitCall(this);
}
}
and here in RetrofitCall class
private class RetrofitCall {
private RetrofitListener retrofitListener;
public RetrofitCall(RetrofitListener retrofitListener) {
this.retrofitListener = retrofitListener;
}
void getData(){
getDataTZ(lat+","+lon, time, apiKeyTz).enqueue(new Callback<TimeZoneGoogle>() {
#Override
public void onResponse(Call<TimeZoneGoogle> call, Response<TimeZoneGoogle> response) {
TimeZoneGoogle result = response.body();
timeZone = result.getTimeZoneId();
}
#Override
public void onFailure(Call<TimeZoneGoogle> call, Throwable t) {
}
});
}
}