java - How can I get the sum of a column from my JSON Array -

-

this inside response.listener on stringrequest.

                try {                         jsonobject jsonobject = new jsonobject(response);                         jsonarray array = jsonobject.getjsonarray("cart");                         (int = 0; i<array.length(); i++){                             jsonobject o = array.getjsonobject(i);                             cartitem item = new cartitem(                                     o.getstring("cardno"),                                     o.getstring("product_id"),                                     o.getstring("name"),                                     o.getstring("quantity"),                                     o.getstring("price"),                                     o.getstring("category")                             );                             cartitems.add(item);                         }                         adapter = new cartadaptor(cartitems, getcontext());                         recyclerview.setadapter(adapter);                      } catch (jsonexception e) {                         e.printstacktrace();                     }                 }

it json array , put in cartitem.java , populate cartadaptor.java

public cartitem(string cardno, string product_id, string name, string quantity, string price, string category) {     this.cardno = cardno;     this.product_id = product_id;     this.name = name;     this.quantity = quantity;     this.price = price;     this.category = category;

how can total price in array?

i'm not sure want total price.

and suggest one.

            try {                     int total = 0;                         //  add                      jsonobject jsonobject = new jsonobject(response);                     jsonarray array = jsonobject.getjsonarray("cart");                     (int = 0; i<array.length(); i++){                         jsonobject o = array.getjsonobject(i);                         cartitem item = new cartitem(                                 o.getstring("cardno"),                                 o.getstring("product_id"),                                 o.getstring("name"),                                 o.getstring("quantity"),                                 o.getstring("price"),                                 o.getstring("category")                         );                         cartitems.add(item);                          //  add                         if(o.getstring("price") != null &&                            o.getstring("price") != "" ){                             total += integer.parseint(o.getstring("price"));                         }                       }                     adapter = new cartadaptor(cartitems, getcontext());                     recyclerview.setadapter(adapter);                  } catch (jsonexception e) {                     e.printstacktrace();                 }             }

then can total prices.


Comments

Post a Comment

Popular posts from this blog

ios - MKAnnotationView layer is not of expected type: MKLayer -

-
Image
so code works fine logger riddled message. there way rid of or suppress it? postannotation.swift class postannotation: mkpointannotation { //mark: properties let post: post //mark: initialization init(post: post) { self.post = post super.init() self.coordinate = cllocationcoordinate2d(latitude: post.latitude, longitude: post.longitude) self.title = post.title self.subtitle = post.timestring() } } adding annotation let annotation = postannotation(post: post) self.map.addannotation(annotation) func mapview func mapview(_ mapview: mkmapview, viewfor annotation: mkannotation) -> mkannotationview? { if annotation mkuserlocation { return nil } var annotationview = mapview.dequeuereusableannotationview(withidentifier: "pin") as? mkpinannotationview if annotationview == nil { annotationview = mkpinannotationview(annotation: annotation, reuseidentifier: "pin")
Read more

ZeroMQ on Windows, with Qt Creator -

-
i have installed zmq link given below on windows 7. http://zeromq.org/distro:microsoft-windows 1) have c++ project in qt-creator , i'm using zmq c++ binding (zhelpers.hpp etc). 2) have added .lib installed zmq folder qtcreator 3) while compiling, compiler looks _imp__zmq_verion, in .dll files present in .lib have __imp_zmq_version. 4) causing undefined reference zmq_version. anyone else faced problem , has solution ?
Read more

unity3d - Unity SceneManager.LoadScene quits application -

-
i have 2 different scenes 1 named 'main' , other 'game' both added scenes in load. when use scenemanager.loadscene("game"); works no problem when tried return main scene code if (input.getkeydown (keycode.escape)) { scenemanager.loadscene("main"); } strangely game quits. thanks. sorry interruption. somewhere on other script found code. if (input.getkeydown (keycode.escape)) { application.quit (); } that's bad, know...
Read more