title: OkHttp Request in Separate Class
body: <p>So I currently have my OkHttp requests in my MainActivity in order to test that they actually worked. However, I need to move them to a separate class so that I can use the requests to populate my Navagation Drawer menu items. Furthermore, in my MainActivity, I do oAuth of invalidating a token and requesting it and that token needs to be used in my requests. I am a bit lost as I am calling the new class in my MainActivity as <code>apiRequest.run();</code> This is what I get back in the run console.</p>
  
  <pre><code>I/System.out: ya29.CjBIAx67rM70-CKu9Wc5fUSLzt9rIqt4bRubpl4hB9UjwqeRatoZppbMmNDl_SPcFWA
  E/AuthApp: ya29.CjBIAx67rM70-CKu9Wc5fUSLzt9rIqt4bRubpl4hB9UjwqeRatoZppbMmNDl_SPcFWA
  W/System.err: java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.String android.content.SharedPreferences.getString(java.lang.String, java.lang.String)' on a null object reference
  W/System.err:     at com.example.jamessingleton.chffrapi.AuthPreferences.getToken(AuthPreferences.java:43)
  W/System.err:     at com.example.jamessingleton.chffrapi.APIRequests.run(APIRequests.java:34)
  W/System.err:     at com.example.jamessingleton.chffrapi.MainActivity$1.onClick(MainActivity.java:90)
  W/System.err:     at com.google.android.gms.common.SignInButton.onClick(Unknown Source)
  W/System.err:     at android.view.View.performClick(View.java:5697)
  W/System.err:     at android.widget.TextView.performClick(TextView.java:10814)
  W/System.err:     at android.view.View$PerformClick.run(View.java:22526)
  W/System.err:     at android.os.Handler.handleCallback(Handler.java:739)
  W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:95)
  W/System.err:     at android.os.Looper.loop(Looper.java:158)
  W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:7224)
  W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
  W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
  W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
  </code></pre>
  
  <p>Here is my MainActivity where I am implementing it.</p>
  
  <pre><code>Context mContext = MainActivity.this;
      private AccountManager mAccountManager;
      private AuthPreferences authPreferences;
      private APIRequests apiRequests;
      EditText emailText;
      TextView responseView;
      ProgressBar progressBar;
  
      static final String API_URL = "https://api.comma.ai/v1/auth/?access_token=";
      static final String ChffrMe_URL = "https://api.comma.ai/v1/me/";
      static final String SCOPE = "https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/plus.me";
      private static final int AUTHORIZATION_CODE = 1993;
      private static final int ACCOUNT_CODE = 1601;
      String commatoken;
      String commaMyInfo;
      private final OkHttpClient client = new OkHttpClient();
  
  
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          responseView = (TextView) findViewById(R.id.responseView);
          progressBar = (ProgressBar) findViewById(R.id.progressBar);
          mAccountManager = AccountManager.get(this);
          authPreferences = new AuthPreferences(this);
          apiRequests = new APIRequests();
          final Context context = this;
          invalidateToken();
          requestToken();
          SignInButton signInButton = (SignInButton) findViewById(R.id.sign_in_button);
          signInButton.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  if (authPreferences.getUser() != null &amp;&amp; authPreferences.getToken() != null) {
                      System.out.println(authPreferences.getToken());
                      doCoolAuthenticatedStuff();
  //                    Intent intent = new Intent(context, NavDrawerActivity.class);
  //                    startActivity(intent);
                      try {
                          apiRequests.run();
                      } catch (Exception e) {
                          e.printStackTrace();
                      }
  //                    try {
  //                        run();
  //                    } catch (Exception e) {
  //                        e.printStackTrace();
  //                    }
                      //new RetrieveFeedTask().execute();
                  } else {
                      chooseAccount();
                  }
              }
          });
  </code></pre>
  
  <p>And here is my APIRequests.java</p>
  
  <pre><code>public class APIRequests {
      private final OkHttpClient client = new OkHttpClient();
      static final String API_URL = "https://api.comma.ai/v1/auth/?access_token=";
      static final String ChffrMe_URL = "https://api.comma.ai/v1/me/";
      private AuthPreferences authPreferences = new AuthPreferences(this);
      String commatoken;
      String commaMyInfo;
      private MainActivity mActivity;
  
      public void run() throws Exception {
          Request request = new Request.Builder()
                  .url(API_URL + authPreferences.getToken())
                  .build();
  
          client.newCall(request).enqueue(new Callback() {
              public void onFailure(Call call, IOException e) {
                  e.printStackTrace();
              }
  
  
              public void onResponse(Call call, Response response) throws IOException {
                  if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);
  
                  Headers responseHeaders = response.headers();
                  for (int i = 0, size = responseHeaders.size(); i &lt; size; i++) {
                      System.out.println(responseHeaders.name(i) + ": " + responseHeaders.value(i));
                  }
                  try
                  {
                      String token = response.body().string();
                      JSONObject json = new JSONObject(token);
                      commatoken = json.getString("access_token");
                  } catch (JSONException e)
                  {
  
                  }
  //                commatoken = response.body().string();
  //                System.out.println(commatoken);
  
                  if(response.isSuccessful())
                  {
                      final Request dataRequest = new Request.Builder()
                              .header("content-type", "application/x-www-form-urlencoded")
                              .header("authorization", "JWT "+ commatoken)
                              .url(ChffrMe_URL).build();
  
                      client.newCall(dataRequest).enqueue(new Callback() {
                          @Override
                          public void onFailure(Call call, IOException e) {
                              e.printStackTrace();
                          }
  
                          @Override
                          public void onResponse(Call call, Response responseMe) throws IOException {
                              if (!responseMe.isSuccessful()) throw new IOException("Unexpected code " + responseMe);
  
                              Headers responseHeaders = responseMe.headers();
                              for (int i = 0, size = responseHeaders.size(); i &lt; size; i++) {
                                  System.out.println(responseHeaders.name(i) + ": " + responseHeaders.value(i));
                              }
                              try
                              {
                                  String myInfo = responseMe.body().string();
                                  JSONObject json = new JSONObject(myInfo);
                                  commaMyInfo = json.getString("points");
                                  System.out.println(commaMyInfo);
                              } catch (JSONException e)
                              {
  
                              }
  //                            runOnUiThread(new Runnable() {
  //                                @Override
  //                                public void run() {
  //                                    responseView.setText("Comma Points: " +commaMyInfo);
  //                                }
  //                            });
  
                          }
                      });
                  }
              }
  
          });
      }
  }
  </code></pre>
  
  <p>Not sure why it isn't liking my apiRequests.run();</p>
  
  <p>Here is the AuthPreferences</p>
  
  <pre><code>public class AuthPreferences {
      private static final String KEY_USER = "user";
      private static final String KEY_TOKEN = "token";
  
      private SharedPreferences preferences;
  
      public AuthPreferences(Context context) {
          preferences = context
                  .getSharedPreferences("auth", Context.MODE_PRIVATE);
      }
  
      public AuthPreferences(APIRequests apiRequests) {
  
      }
  
      public void setUser(String user) {
          Editor editor = preferences.edit();
          editor.putString(KEY_USER, user);
          editor.commit();
      }
  
      public void setToken(String password) {
          Editor editor = preferences.edit();
          editor.putString(KEY_TOKEN, password);
          editor.commit();
      }
  
      public String getUser() {
          return preferences.getString(KEY_USER, null);
      }
  
      public String getToken() {
          return preferences.getString(KEY_TOKEN, null);
  
      }
  }
  </code></pre>