How do i get data from Rest API - api

Question

Please, i am trying to access data from rest API,
From the Documentation ,to get the token, i have to make a post call ,then use the token received to access two other results:
for the token, they gave this from the documentation:
https://apps.qa.interswitchng.com/passport/oauth/token
with the following Query Params
grant_type string
Headers
Authorization string required
Set value to "Basic Base64(CLIENT_ID:SECRET_KEY)"
Content-Type application/x-www-form-urlencoded
string
My Codes
#SuppressLint("StaticFieldLeak")
class SendTokenReqAsyncTask extends AsyncTask<String, Void, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setMessage("processing Token");
progressDialog.setCancelable(false);
progressDialog.show();
}
#Override
protected String doInBackground(String... params) {
JSONObject jsonObject2 = new JSONObject();
InputStream inputStream = null;
String result2 = "";
base64EncodedCredentials = "Basic" + Base64.encodeToString ((CLIENT_ID + ":" + SECRET) .getBytes (), Base64.NO_WRAP);
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(" https://apps.qa.interswitchng.com/passport/oauth/token/");
//StringEntity stringEntity2 = new StringEntity(userPhoneNumber);
//httpPost.setEntity(stringEntity2);
httpPost.setHeader("Accept", "application/json");
httpPost.setHeader("Authorization", base64EncodedCredentials);
httpPost.setHeader("Content-type", "application/x-www-form-urlencoded");
HttpResponse httpResponse1 = httpclient.execute(httpPost);
inputStream = httpResponse1.getEntity().getContent();
InputStreamReader inputStreamReader1 = new InputStreamReader(inputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader1);
StringBuilder stringBuilder2 = new StringBuilder();
String bufferedStrChunk = null;
int data = inputStreamReader1.read();
while((bufferedStrChunk = bufferedReader.readLine()) != null){
stringBuilder2.append(bufferedStrChunk);
}
result2=stringBuilder2.toString();
return result2;
} catch (Exception e) {
Log.d("InputStream", e.getLocalizedMessage());
}
return null;
}
#Override
protected void onPostExecute(String result2) {
super.onPostExecute(result2);
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setCancelable(true);
progressDialog.hide();
//String re=null;
/*try {
JSONObject jsonObject = new JSONObject(result2);
re = jsonObject.getString(result2);
} catch (JSONException e) {
e.printStackTrace();
}*/
txtInfo = findViewById(R.id.textViewMain);
txtInfo.setVisibility(View.VISIBLE);
txtInfo.setText(MessageFormat.format("Token is :{0}", result2));
}
}
with the below code in the oncreate
SendTokenReqAsyncTask myAsyncTasks = new SendTokenReqAsyncTask();
myAsyncTasks.execute();
i also used retrofit this way
#SuppressWarnings("deprecation")
public class MyRetrofitClient {
protected static MyRetrofitClient myRetrofitClient = null;
private static RetroApis myRetroApis;
private static TokenAPI tokenAPI;
private static Retrofit retrofit = null;
private String tokenFromServer;
String clientID,secret;
private byte[] data64;
String base64=null;
MyRetrofitClient() {
if (retrofit == null) {
retrofit = new Retrofit.Builder()
.baseUrl(TOKEN_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
}
myRetroApis = retrofit.create(RetroApis.class);
}
public String encodeToBase64() {
clientID= CLIENT_ID1;
secret=SECRET1;
String text = clientID + ":" + secret;
data64 = new byte[0];
data64 = text.getBytes(StandardCharsets.UTF_8);
base64=android.util.Base64.encodeToString(data64, android.util.Base64.DEFAULT);
return base64;
}
static Retrofit getTokenClient() {
String type="application/x-www-form-urlencoded";
String base64String=MyRetrofitClient.myRetrofitClient.encodeToBase64();
RequestBody requestBody = RequestBody.create(MediaType.parse("Content-type"), type);
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(HttpLoggingInterceptor.Level.BASIC);
logging.redactHeader("Authorization");
OkHttpClient httpClient = new OkHttpClient.Builder()
.addInterceptor(logging)
.addNetworkInterceptor(new Interceptor() {
#NotNull
#Override
public Response intercept(#NotNull Interceptor.Chain chain) throws IOException {
Request request = chain.request().newBuilder().addHeader("Authorization", MyRetrofitClient.getInstance().encodeToBase64()).build();
return chain.proceed(request);
}
})
.addNetworkInterceptor(new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BASIC))
.build();
retrofit = new Retrofit.Builder()
.baseUrl(TOKEN_URL)
.addConverterFactory(GsonConverterFactory.create())
.client(httpClient)
.build();
return retrofit;
}
static Retrofit getTCreditReportClient(String tokenFromServer,String userPhoneNumber) {
String type="application/json";
RequestBody requestBody = RequestBody.create(MediaType.parse("Content-type"), type);
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(HttpLoggingInterceptor.Level.BODY);
//logging.setLevel(HttpLoggingInterceptor.Level.BODY);
logging.redactHeader("Authorization");
logging.redactHeader("Content-type");
OkHttpClient httpClient = new OkHttpClient.Builder()
.addInterceptor(logging)
.addNetworkInterceptor(new Interceptor() {
#NotNull
#Override
public Response intercept(#NotNull Interceptor.Chain chain) throws IOException {
Request request = chain.request().newBuilder().addHeader("Authorization", tokenFromServer).build();
//Request request3 = chain.request().newBuilder().method("Content-type", requestBody).build();
return chain.proceed(request);
}
})
.addNetworkInterceptor(new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY))
.build();
retrofit = new Retrofit.Builder()
.baseUrl("https://reqres.in")
.addConverterFactory(GsonConverterFactory.create())
.client(httpClient)
.build();
return retrofit;
}
static Retrofit getClient() {
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(HttpLoggingInterceptor.Level.BASIC);
//logging.setLevel(HttpLoggingInterceptor.Level.BODY);
logging.redactHeader("Authorization");
logging.redactHeader("Cookie");
OkHttpClient client = new OkHttpClient.Builder()
.addInterceptor(logging)
.build();
retrofit = new Retrofit.Builder()
.baseUrl("https://reqres.in")
.addConverterFactory(GsonConverterFactory.create())
.client(client)
.build();
return retrofit;
}
public static synchronized MyRetrofitClient getInstance() {
if (myRetrofitClient == null) {
myRetrofitClient = new MyRetrofitClient();
}
return myRetrofitClient;
}
public RetroApis getMyApi() {
return myRetroApis;
}
public TokenAPI getMyTokenApi() {
return tokenAPI;
}
}
public interface TokenAPI {
String contentType= "application/json";
String authorization= "<>";
#FormUrlEncoded
#POST("client_credentials")
Call<OAuthToken> postCredentials(#Field("grant_type") String grantType);
//#FormUrlEncoded
#GET("creditScores")
Call<CreditScore> getCreditScore(#Query("client_credentials") String queryParam);
//#FormUrlEncoded
#GET("creditScores")
Call<List<CreditScoreHistory>> getCreditScoreHistory(#Query("client_credentials") String name);
#GET("/1.1/users/show.json")
Call<String> getUserDetails(#Query("screen_name") String name);
}
private void createInterSwitchTokenAPI33() {
editText = findViewById(R.id.editText);
base64EncodedCredentials = "Basic" + Base64.encodeToString ((CLIENT_ID + ":" + SECRET) .getBytes (), Base64.NO_WRAP);
//base64String=this.encodeToBase64();
String editTextInput = Objects.requireNonNull(editText.getText()).toString();
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(HttpLoggingInterceptor.Level.BASIC);
logging.redactHeader("Authorization");
OkHttpClient httpClient = new OkHttpClient.Builder()
.addInterceptor(logging)
.addNetworkInterceptor(new Interceptor() {
#NotNull
#Override
public okhttp3.Response intercept(#NotNull Interceptor.Chain chain) throws IOException {
Request request = chain.request().newBuilder().addHeader("Authorization", base64EncodedCredentials).build();
return chain.proceed(request);
}
})
.addNetworkInterceptor(new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BASIC))
.build();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(TOKEN_URL)
.addConverterFactory(GsonConverterFactory.create())
.client(httpClient)
.build();
tokenAPI = retrofit.create(TokenAPI.class);
tokenAPI.getCreditScore(editTextInput).enqueue(creditScoreCallback);
}
public void onClick(View view) {
if (view.getId() == R.id.post) {
editText = findViewById(R.id.editText);
String editTextInput = editText.getText().toString();
if (!editTextInput.isEmpty())
createCreditScoreAPI(token);
createHistoryAPI(token);
tokenAPI.getCreditScore(editTextInput).enqueue(creditScoreCallback);
tokenAPI.getCreditScoreHistory(editTextInput).enqueue(creditScoreHistoryCallback);
} else {
Toast.makeText(this, "Please provide your BVN Phone Number", Toast.LENGTH_LONG).show();
}
}
private void createCreditScoreAPI(OAuthToken token) {
OkHttpClient okHttpClient = new OkHttpClient.Builder().addInterceptor(new Interceptor() {
#NotNull
#Override
public okhttp3.Response intercept(#NotNull Chain chain) throws IOException {
//Request originalRequest = chain.request();
Request request = chain.request().newBuilder().addHeader("Authorization", token.getAccessToken()).build();
return chain.proceed(request);
}
}).addNetworkInterceptor(new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.HEADERS))
.build();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(SCORE_URL)
.client(okHttpClient)
.addConverterFactory(GsonConverterFactory.create())
.build();
tokenAPI = retrofit.create(TokenAPI.class);
}
Callback<CreditScore> creditScoreCallback = new Callback<CreditScore>() {
#Override
public void onResponse(Call<CreditScore> call, Response<CreditScore> response) {
if (response.isSuccessful()) {
CreditScore creditScore = response.body();
if (creditScore != null) {
id = creditScore.getId();
msisdn = creditScore.getMsisdn();
score = creditScore.getScore();
dateCreated = creditScore.getDateCreated();
}
displayResponse += id + " Phone\n" + msisdn + " Score\n" + score + " dateCreated\n"+dateCreated;
txtCreditScore = findViewById(R.id.textCreditScore);
if (displayResponse == null) txtCreditScore.setText("no value");
else txtCreditScore.setText(displayResponse);
} else {
Toast.makeText(MainActivity.this, "Failure while requesting Credit Score", Toast.LENGTH_LONG).show();
txtCreditScore.setText(MessageFormat.format("Error!{0}", response.message()));
Log.d("Credit Score Details", "Code: " + response.code() + "Message: " + response.message());
}
}
#Override
public void onFailure(Call<CreditScore> call, Throwable t) {
t.printStackTrace();
}
};
private void createHistoryAPI(OAuthToken token) {
OkHttpClient okHttpClient = new OkHttpClient.Builder().addInterceptor(new Interceptor() {
#NotNull
#Override
public okhttp3.Response intercept(#NotNull Chain chain) throws IOException {
Request originalRequest = chain.request();
Request request = chain.request().newBuilder().addHeader("Authorization", token.getAccessToken()).build();
return chain.proceed(request);
}
}).addNetworkInterceptor(new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.HEADERS))
.build();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(HISTORY_URL)
.client(okHttpClient)
.addConverterFactory(GsonConverterFactory.create())
.build();
tokenAPI = retrofit.create(TokenAPI.class);
}
Callback<List<CreditScoreHistory>> creditScoreHistoryCallback = new Callback<List<CreditScoreHistory>>() {
#Override
public void onResponse(Call<List<CreditScoreHistory>> call, Response<List<CreditScoreHistory>> response) {
if (response.isSuccessful()) {
recyclerView = findViewById(R.id.recyclerViewHistory);
} else {
Toast.makeText(MainActivity.this, "Failure while requesting user details", Toast.LENGTH_LONG).show();
Log.d("History Callback", "Code: " + response.code() + "Message: " + response.message());
}
if (response.isSuccessful()) {
CreditScoreHistory creditScoreHistory = new CreditScoreHistory();
creditScoreList = response.body();
if (creditScoreList != null) {
for (int i = 0; i < creditScoreList.size(); i++) {
creditScoreList.add(creditScoreHistory);
count=creditScoreList.size();
}
if(creditScoreHistory !=null){
msisdn = creditScoreHistory.getMsisdn1();
score = creditScoreHistory.getScore1();
dateCreated = creditScoreHistory.getDateCreated1();
creditScoreList = creditScoreHistory.data;
}
}
displayResponse += count+" Phone\n" + msisdn + " Score\n" + score + " dateCreated\n"+dateCreated;
txtCreditHistory = findViewById(R.id.textCreditHistory);
creditHistoryAdapter = new CreditHistoryAdapter(MainActivity.this, creditScoreList);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(MainActivity.this);
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(creditHistoryAdapter);
SnapHelper snapHelper = new PagerSnapHelper();
snapHelper.attachToRecyclerView(recyclerView);
recyclerView.setNestedScrollingEnabled(false);
if (displayResponse == null) txtCreditScore.setText("no value");
else txtCreditHistory.setText(displayResponse);
} else {
Toast.makeText(MainActivity.this, "Failure while requesting Credit Score", Toast.LENGTH_LONG).show();
txtCreditHistory.setText(MessageFormat.format("Error!{0}", response.message()));
Log.d("Credit Score History", "Code: " + response.code() + "Message: " + response.message());
}
}
#Override
public void onFailure(Call<List<CreditScoreHistory>> call, Throwable t) {
t.printStackTrace();
}
};
buy could not get any result, please help

Answer 1

Use VSCode and ThunderClient extension https://marketplace.visualstudio.com/items?itemName=rangav.vscode-thunder-client