Volley does not seem to work with Android SDK 29

Question

I want to access JSONobject from my rest API using Volley in SDK version 29, but I am getting timeout error.

I had tried the same code before in other versions then it is working.

public class Login extends AppCompatActivity {

    String data = "";
    String url = "http://xyz/abc";
    TextView tv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);
        Button button=(Button) findViewById(R.id.lgn) ;
        button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // making json object request
                getObject();
            }
        });
        tv=(TextView) findViewById(R.id.txtResponse);

    }

    public void getObject(){
        RequestQueue queue = Volley.newRequestQueue(this);
        StringRequest strRequest = new StringRequest(Request.Method.POST, url,
                new Response.Listener<String>()
                {
                    @Override
                    public void onResponse(String response)
                    {
                        Toast.makeText(getApplicationContext(), response, Toast.LENGTH_SHORT).show();
                    }
                },
                new Response.ErrorListener()
                {
                    @Override
                    public void onErrorResponse(VolleyError error)
                    {
                        Toast.makeText(getApplicationContext(), error.toString(), Toast.LENGTH_SHORT).show();
                    }
                })
        {
            @Override
            protected Map<String, String> getParams()
            {
                Map<String, String> params = new HashMap<String, String>();
                params.put("abc", "xyz");
                params.put("abc", "xyz");
                params.put("abc", "xyz");
                return params;
            }
        };

        queue.add(strRequest);
        //VolleySingleton.getInstance(getApplicationContext()).addToRequestQueue(req);
    }
}

I want to get response of my JSONobject using volley in SDK version 29.

it is your code problem, still trying to use http, not https. have you set the rules in your config? — Fung, Jul 13 '19 at 02:02

score 1 · Answer 1 · answered Jul 05 '19 at 09:02

This is a POST but you pass no body. Try overriding the getBody() method as you did for getParams().

Something like this should work

@Override
    public byte[] getBody() {
        String parsedBody = new String();
        try {
            parsedBody = parseBody(body); /* write a function to parse the body into a String */
            return parsedBody == null ? null : parsedBody.getBytes("utf-8");
        } catch (UnsupportedEncodingException uee) {
            VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", parsedBody, "utf-8");
            return null;
        }
    }

as stated in https://github.com/google/volley/issues/235 you might want to create a network config file, follow [Asad' asnwer](https://stackoverflow.com/a/53739479/8949981) — Biiz, Jul 10 '19 at 06:34

score 0 · Answer 2 · answered Jul 13 '19 at 02:04

HTTP is blocked by default since Pie (SDK level 28). Please read this for more info. https://android-developers.googleblog.com/2018/08/introducing-android-9-pie.html

Please refer to this for solution. How to allow all Network connection types HTTP and HTTPS in Android (9) Pie?

score -1 · Answer 3 · answered Jul 13 '19 at 01:57

Try to add this compileOptions in build.gradle inside android tag

android {
  ...
  // Configure only for each module that uses Java 8
  // language features (either in its source code or
  // through dependencies).
  compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
  }
}

Volley does not seem to work with Android SDK 29

3 Answers3