[Android] Volley

- implement volley library gradle
- manifest permission internet

- declare variable

RequestQueue requestQueue;


- onCreate

requestQueue = Volley.newRequestQueue(MainActivity.this);

- method

private void getChatTime(final String uid) {

StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener() {
@Override
public void onResponse(String response) {
System.out.println("response");
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
System.out.println("error");
}
}) {
@Override
protected Map getParams() {
Map params = new HashMap<>();
params.put("keyword1", description1);
params.put("keyword2", description2);
params.put("keyword3", description3);
return params;
}
};

requestQueue.add(stringRequest);
}