Callback in android(Network call in separate class)

Question

I have layout xml name main.xml and i have main.java class in that class now i send network call and get data from rest service.But now i want to separate network call in anohther class.How can i do that.

main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />
    <Button
        android:id="@+id/callsubclass"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Call sub-class" />
    <TextView
        android:id="@+id/result"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

main.java

 protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        buttonCallSubClass = (Button)findViewById(R.id.callsubclass);
        textResult = (TextView)findViewById(R.id.result);

       // i can set network call here and update TExtview

       textResult .setText(result);
    }

rest service response ={"id":1958,"content":"Hello, World!"}

my separate nework.java class

String url1 = String.format("http://rest-service.guides.spring.io/greeting");
        JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.GET,
                url1, null,
                new Response.Listener<JSONObject>() {

                    @Override
                    public void onResponse(JSONObject response) {
                        Log.d("Test", response.toString());
                        String token="a";
                        String id="";
                        String result="";
                        try {
                            id= response.get("id").toString();
                            result= response.get("content").toString();
                        }catch (JSONException e){
                            e.printStackTrace();
                            Toast.makeText(getApplicationContext(),
                                    "Error: " + e.getMessage(),
                                    Toast.LENGTH_LONG).show();
                        }


                    }

now i want to do network call in separate class give a solution.

But now i want to separate network call in anothher class. => Dude as you mentioned above,you already have a separate network class! — Paresh Mayani, Oct 10 '15 at 08:44
But i cant update my UI(xml) in separated class from the result of rest service — Lakshan, Oct 10 '15 at 09:08
Read [my answer here](http://stackoverflow.com/questions/32627089/post-request-json-file-passing-string-and-wait-for-the-response-volley/32627293#32627293). Hope this helps! — BNK, Oct 10 '15 at 10:21
And [one more here](http://stackoverflow.com/questions/32551668/android-volley-static-vs-object/32642986?noredirect=1#comment53137764_32642986) — BNK, Oct 10 '15 at 10:25
@BNK i read your post but i cant understand how can i apply it to my project.can you explain me how it apply for my project. — Lakshan, Oct 10 '15 at 11:11
Ok. Use and interface or callbacks, Override in your main activity your custom método/ metods, pass your callback to your rest callback and ok success Override your custom method of callback, so in your activity Override you can update te ui. Is the best way — Max Pinto, Oct 10 '15 at 12:03
Read my sample code in the two links I sent above. It's easy to understand if you already used Volley. — BNK, Oct 10 '15 at 12:42
Glad it could help, you should post your solution as an answer to this question for other men's reference — BNK, Oct 10 '15 at 20:58

Callback in android(Network call in separate class)

0 Answers0