How to send request Header is “Content-Type”:“application/json” when GET on Volley

Question

I try to use GET on Volley , but i need send request to application/json .

I take a look for some answers , i try to use jsonBody , but it

Answer 1

@Override 
public Map getHeaders() throws AuthFailureError { 
    Map params = new HashMap();                
    params.put("Content-Type", "application/json");
    return params; 
} 

Implementation in your's

public class MainActivity extends AppCompatActivity {

    String url = "http://114.35.246.42:2212/MobileApp/DEST_WebService.asmx/GetNews";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        RequestQueue mQueue = Volley.newRequestQueue(getApplicationContext());

        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(url, jsonBody,
            new Response.Listener() {
                @Override
                public void onResponse(JSONObject response) {
                    Log.d("TAG", response.toString());
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Log.e("TAG", error.getMessage(), error);
                }
            }) { //no semicolon or coma
            @Override 
            public Map getHeaders() throws AuthFailureError { 
                Map params = new HashMap();                
                params.put("Content-Type", "application/json");
                return params; 
            } 
        };
        mQueue.add(jsonObjectRequest);
    }
}