How to wait until a HTTP request has a response before sending next

Question

I have to send some things from the database to the server. So, I call a db method, and get a cursor, which has many positions. I need to send a httprequest for avery position of the cursor, but only send the second petition when the first has been received in the server, and the proper answer sent. I have this code:

final Cursor cursor = db.getData();
Thread thread=new Thread(new Runnable() {
      @Override
      public void run() {
           if(cursorContadores.moveToFirst()){
                  do{
                  Call<String> peticion = interfaz.saveToServer(cursor.getString(1), cursor.getString(2));
                  peticion.enqueue(new Callback<String>() {
                       @Override
                       public void onResponse(Response<String> response, Retrofit retrofit) {

                              if(response.message().equals("ok")){

                              }else{

                              }
                       }

                       @Override
                       public void onFailure(Throwable t) {

                                            }
                                        });

                  }while (cursorContadores.moveToNext());
           cursorContadores.close();
           db.close();
                  }
                            }
        });
thread.start();

This way, I think it will not wait until every iteration in the do while block ends, to start the next iteration.

How could I achieve this? Something I could read to learn how to?

Thank you.

Why not send the second request on Success of your first request. And also check the expected response of first request before sending second. — Ritt, Oct 28 '15 at 11:11
register a brodcast receiver . call it when a http response is got from server (for success -status code is 200), send even position of ur cursor, then catch it in onreceive and then u can start the next http request from on receive of particular cursor position. — Mahalakshmi, Oct 28 '15 at 11:26

score 0 · Accepted Answer · edited Mar 01 '23 at 01:55

0

In your Http response, you can check for response code. For example if the response is 200 for successful receive, you can do something like:

HTTPResponse response;

if(response.getStatusLine().getStatusCode()==200){
   
 //SEND NEXT

}

This way you can send the next request once the previous one is received.

edited Mar 01 '23 at 01:55

Ryan M

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answered Oct 28 '15 at 11:14

Prakhar

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How to wait until a HTTP request has a response before sending next

1 Answers1