First commit: customized structure from Nextcloud SSO Example: https://github.com/matiasdelellis/app-tutorial-android

app/src/main/java/it/danieleverducci/nextcloudmaps/api/ApiProvider.java

@@ -0,0 +1,81 @@
+/*
+ * Nextcloud Notes Tutorial for Android
+ *
+ * @copyright Copyright (c) 2020 John Doe <john@doe.com>
+ * @author John Doe <john@doe.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package it.danieleverducci.nextcloudmaps.api;
+
+import android.content.Context;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+
+import com.google.gson.GsonBuilder;
+import com.nextcloud.android.sso.api.NextcloudAPI;
+import com.nextcloud.android.sso.exceptions.NextcloudFilesAppAccountNotFoundException;
+import com.nextcloud.android.sso.exceptions.NoCurrentAccountSelectedException;
+import com.nextcloud.android.sso.helper.SingleAccountHelper;
+import com.nextcloud.android.sso.model.SingleSignOnAccount;
+
+import retrofit2.NextcloudRetrofitApiBuilder;
+
+public class ApiProvider {
+    private final String TAG = ApiProvider.class.getCanonicalName();
+
+    @NonNull
+    protected Context context;
+    protected static API mApi;
+
+    protected static String ssoAccountName;
+
+    public ApiProvider(Context context) {
+        this.context = context;
+        initSsoApi(new NextcloudAPI.ApiConnectedListener() {
+            @Override
+            public void onConnected() {
+                // Ignore..
+            }
+
+            @Override
+            public void onError(Exception ex) {
+                // Ignore...
+            }
+        });
+    }
+
+    public void initSsoApi(final NextcloudAPI.ApiConnectedListener callback) {
+        try {
+            SingleSignOnAccount ssoAccount = SingleAccountHelper.getCurrentSingleSignOnAccount(context);
+            NextcloudAPI nextcloudAPI = new NextcloudAPI(context, ssoAccount, new GsonBuilder().create(), callback);
+
+            ssoAccountName = ssoAccount.name;
+            mApi = new NextcloudRetrofitApiBuilder(nextcloudAPI, API.mApiEndpoint).create(API.class);
+        } catch (NextcloudFilesAppAccountNotFoundException | NoCurrentAccountSelectedException e) {
+            Log.d(TAG, "setAccout() called with: ex = [" + e + "]");
+        }
+    }
+
+    public static API getAPI() {
+        return mApi;
+    }
+
+    public static String getAccountName() {
+        return ssoAccountName;
+    }
+
+}