Set the single asyncTask inLoginpage

app/src/main/java/com/vsoft/uoflservicenow/ui/HomeScreen.java

@@ -24,8 +24,10 @@ import butterknife.OnItemClick;
  * Created by Kunj on 11/8/16.
  */
 public class HomeScreen extends AppCompatActivity {
-	@BindView(R.id.tool_bar_view) Toolbar mToolbar;
-	@BindView(R.id.home_screen_grid_view) GridView mGridView;
+    @BindView(R.id.tool_bar_view)
+    Toolbar mToolbar;
+    @BindView(R.id.home_screen_grid_view)
+    GridView mGridView;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {

app/src/main/java/com/vsoft/uoflservicenow/ui/LoginScreen.java

@@ -8,12 +8,9 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.AsyncTask;
 import android.os.Bundle;
-import android.support.v7.app.AlertDialog;
 import android.text.TextUtils;
 import android.view.KeyEvent;
 import android.view.View;
-import android.view.WindowManager;
-import android.view.inputmethod.InputMethodManager;
 import android.widget.EditText;
 import android.widget.ScrollView;
 import android.widget.TextView;
@@ -49,7 +46,6 @@ import butterknife.internal.Utils;
  */
 public class LoginScreen extends Activity {
 
-
     @BindView(R.id.login_screen_username_edit_text)
     EditText userName;
     @BindView(R.id.errormessage)
@@ -105,7 +101,6 @@ public class LoginScreen extends Activity {
 
         CatalogueApplication application = (CatalogueApplication) getApplication();
         Tracker tracker = application.getDefaultTracker();
-        // Send initial screen view hit.
         Util.sendScreenName(tracker, getString(R.string.login_screen_string));
     }
 
@@ -141,7 +136,6 @@ public class LoginScreen extends Activity {
 
     @OnClick(R.id.login_screen_login_text_view)
     void onLoginClicked() {
-        //startActivity(new Intent(LoginScreen.this, HomeScreen.class));
         callLoginAPI();
     }
 
@@ -161,50 +155,21 @@ public class LoginScreen extends Activity {
 
         @Override
         protected SyncStatus doInBackground(String... params) {
+            SyncStatus syncStatus = null;
             userName = params[0];//"a0kuma18";
             String password = params[1];//"v$0ftA$win";
-            return LoginApiManger.submitLoginValues(Constants.GRANT_TYPE, Constants.CLIENT_ID, Constants
-                            .CLIENT_SECRET, userName,
-                    password);
-        }
-
-        @Override
-        protected void onPostExecute(SyncStatus syncStatus) {
-            super.onPostExecute(syncStatus);
-            if (progressDialog != null && progressDialog.isShowing()) {
-                progressDialog.dismiss();
-            }
-            if (syncStatus == SyncStatus.SUCCESS) {
-                new UserApiDetails().execute(userName);
-            } else {
-                errorMessage.setVisibility(View.VISIBLE);
-                errorMessage.setText("Invalid username and password");
-                //Toast.makeText(LoginScreen.this, "Invalid username and password", Toast.LENGTH_SHORT).show();
-            }
-        }
-
-        private class UserApiDetails extends AsyncTask<String, Void, SyncStatus> {
-            private ProgressDialog progressDialog;
-
-            @Override
-            protected void onPreExecute() {
-                super.onPreExecute();
-                progressDialog = new ProgressDialog(LoginScreen.this);
-                progressDialog.setMessage(getString(R.string.loading_string));
-                progressDialog.show();
-                progressDialog.setCancelable(false);
-            }
-
-            @Override
-
-            protected SyncStatus doInBackground(String... params) {
-                String userName = params[0];
+            syncStatus = LoginApiManger.submitLoginValues(Constants.GRANT_TYPE, Constants.CLIENT_ID, Constants
+                    .CLIENT_SECRET, userName, password);
+            if (syncStatus != null && syncStatus == SyncStatus.SUCCESS) {
                 return UserApiManager.getUserDetailResponse(userName, new GetUserApiListener() {
                     @Override
                     public void onDoneApiCall(List<UserApiValues> userValues) {
                         mUserDetails = userValues;
                     }
                 });
+            } else {
+                return syncStatus;
+            }
         }
 
         @Override
@@ -213,7 +178,7 @@ public class LoginScreen extends Activity {
             if (progressDialog != null && progressDialog.isShowing()) {
                 progressDialog.dismiss();
             }
-                if (syncStatus == SyncStatus.SUCCESS) {
+            if (syncStatus != null && syncStatus == SyncStatus.SUCCESS) {
                 if (mUserDetails != null) {
                     String firstname = mUserDetails.get(0).getFirstName();
                     String lasrname = mUserDetails.get(0).getLastName();
@@ -222,7 +187,9 @@ public class LoginScreen extends Activity {
                     startActivity(new Intent(LoginScreen.this, HomeScreen.class));
                     finish();
                 }
-                }
+            } else {
+                errorMessage.setVisibility(View.VISIBLE);
+                errorMessage.setText("Invalid username and password");
             }
         }
     }