Volley GsonRequest を使用してこれを解決できました。
public class MainActivity extends AppCompatActivity {
String url = "https://arcane-anchorage-34204.herokuapp.com/handleCode";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
JSONObject jsonBody = null;
try {
jsonBody = new JSONObject ("{\"code\":\"NZ4UBUB\"}");
} catch (JSONException e) {
Toast.makeText(getApplicationContext(), "Error e = " + e, Toast.LENGTH_SHORT).show();
}
Map<String, String> headers = new HashMap<String, String>();
headers.put("Content-Type", "application/json");
RequestQueue queue = Volley.newRequestQueue(this);
GsonRequest<Routine[]> gsonRequest = new GsonRequest<Routine[]>(Request.Method.POST, url, Routine[].class, headers, new Response.Listener<Routine[]>() {
@Override
public void onResponse(Routine[] routineData) {
TextView serverData = (TextView)findViewById(R.id.serverData);
String complete = "";
String repeat = "";
String hold = "";
String perform = "";
String txtData = "";
for (int i = 0; i < routineData.length; i++) {
complete = (routineData[i].instructions.complete != null) ? "Complete: " + routineData[i].instructions.complete : "";
repeat = (routineData[i].instructions.repeat != null) ? "Repeat: " + routineData[i].instructions.repeat : "";
hold = (routineData[i].instructions.hold != null) ? "Hold: " + routineData[i].instructions.hold : "";
perform = (routineData[i].instructions.perform != null) ? "Perform: " + routineData[i].instructions.perform : "";
txtData += "DESCRIPTION: " + routineData[i].description[0] + ": " + routineData[i].description[1] + ", " + complete + ", " + repeat + ", " + hold + ", " + perform + " ";
}
serverData.setText("Response: " + txtData);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
TextView serverData = (TextView)findViewById(R.id.serverData);
serverData.setText("Response: " + volleyError.toString());
}
}, jsonBody);
queue.add(gsonRequest);
}
public class GsonRequest<T> extends Request<T> {
private final Gson gson = new Gson();
private final Class<T> clazz;
private final Map<String, String> headers;
private final Response.Listener<T> listener;
private JSONObject parameters = null;
/**
* Make a GET request and return a parsed object from JSON.
*
* @param url URL of the request to make
* @param clazz Relevant class object, for Gson's reflection
* @param headers Map of request headers
*/
public GsonRequest(int method, String url, Class<T> clazz, Map<String, String> headers,
Response.Listener<T> listener, Response.ErrorListener errorListener) {
super(method, url, errorListener);
this.clazz = clazz;
this.headers = headers;
this.listener = listener;
}
public GsonRequest(int method, String url, Class<T> clazz, Map<String, String> headers,
Response.Listener<T> listener, Response.ErrorListener errorListener, JSONObject parameters) {
this(method, url, clazz, headers, listener, errorListener);
this.parameters = parameters;
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
return headers != null ? headers : super.getHeaders();
}
@Override
public String getBodyContentType() {
return "application/json";
}
@Override
public byte[] getBody() throws AuthFailureError {
try {
return parameters.toString().getBytes(getParamsEncoding());
} catch (UnsupportedEncodingException e) {
}
return null;
}
@Override
protected void deliverResponse(T response) {
listener.onResponse(response);
}
@Override
protected Response<T> parseNetworkResponse(NetworkResponse response) {
try {
String json = new String(
response.data, HttpHeaderParser.parseCharset(response.headers));
Log.i("RESPONSE", json);
return Response.success(
gson.fromJson(json, clazz), HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JsonSyntaxException e) {
return Response.error(new ParseError(e));
}
}
}
}