I am getting errorResponse instead of the normal response i should have got. I have made a simple php file with a simple text and put it on the wamp server. And i have checked it on the browser it works fine but not in this code.
public class MainActivity extends AppCompatActivity {
    Button button;
    TextView textView;
    String server_url="http://192.168.1.2/greetings.php";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button= (Button) findViewById(R.id.bn);
        textView= (TextView) findViewById(R.id.txt);
        final RequestQueue requestQueue= Volley.newRequestQueue(MainActivity.this);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                StringRequest stringRequest=new StringRequest(Request.Method.POST, server_url, new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        textView.setText(response);
                        requestQueue.stop();
                    }
                }, new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        textView.setText("something wrong happened");
                        error.printStackTrace();
                        requestQueue.stop();
                    }
                });
                requestQueue.add(stringRequest);
            }
        });
    }
}
 
     
    