Set background refresh setting

app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java

@@ -6,6 +6,7 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.AsyncTask;
 import android.os.Bundle;
+import android.preference.PreferenceFragment;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.design.widget.BottomNavigationView;
@@ -28,6 +29,7 @@ import org.communiquons.android.comunic.client.ui.fragments.ConversationFragment
 import org.communiquons.android.comunic.client.ui.fragments.ConversationsListFragment;
 import org.communiquons.android.comunic.client.ui.fragments.FriendsListFragment;
 import org.communiquons.android.comunic.client.ui.fragments.NotificationsFragment;
+import org.communiquons.android.comunic.client.ui.fragments.SettingsFragment;
 import org.communiquons.android.comunic.client.ui.fragments.UpdateConversationFragment;
 import org.communiquons.android.comunic.client.ui.fragments.UserInfosFragment;
 import org.communiquons.android.comunic.client.ui.fragments.UserPageFragment;
@@ -162,6 +164,12 @@ public class MainActivity extends AppCompatActivity
             return true;
         }
 
+        //To open settings fragment
+        if(id == R.id.action_settings){
+            openSettingsFragment();
+            return true;
+        }
+
         //Check for logout request
         if(id == R.id.action_logout){
             confirmUserLogout();
@@ -271,6 +279,17 @@ public class MainActivity extends AppCompatActivity
 
     }
 
+    /**
+     * Open settings fragment
+     */
+    void openSettingsFragment(){
+        SettingsFragment settingsFragment = new SettingsFragment();
+        FragmentTransaction transaction = getFragmentManager().beginTransaction();
+        transaction.replace(R.id.main_fragment, settingsFragment);
+        transaction.addToBackStack(null);
+        transaction.commit();
+    }
+
     /**
      * Open notifications fragment
      */

app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/SettingsFragment.java

@@ -0,0 +1,38 @@
+package org.communiquons.android.comunic.client.ui.fragments;
+
+import android.os.Bundle;
+import android.preference.PreferenceFragment;
+import android.support.annotation.Nullable;
+
+import org.communiquons.android.comunic.client.R;
+import org.communiquons.android.comunic.client.ui.activities.MainActivity;
+
+/**
+ * Application preferences fragment
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 4/8/18.
+ */
+
+public class SettingsFragment extends PreferenceFragment {
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        //Load the preferences from an XML resource
+        addPreferencesFromResource(R.xml.app_preferences);
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        //Update the title
+        getActivity().setTitle(R.string.fragment_settings_title);
+
+        //Update the bottom navigation menu
+        ((MainActivity) getActivity())
+                .setSelectedNavigationItem(R.id.main_bottom_navigation_me_view);
+    }
+}

app/src/main/res/menu/main_menu.xml

@@ -7,6 +7,11 @@
         android:id="@+id/action_friends_list"
         android:title="@string/main_menu_friends_list" />
 
+    <!-- Settings -->
+    <item
+        android:id="@+id/action_settings"
+        android:title="@string/action_settings"/>
+
     <!-- Sign out -->
     <item
         android:id="@+id/action_logout"

app/src/main/res/values/strings.xml

@@ -143,4 +143,8 @@
     <string name="popup_editpost_confirm">Edit</string>
     <string name="edit_post_content_hint">New content for the post</string>
     <string name="err_update_post_content">An error occurred while trying to update the content of the post!</string>
+    <string name="action_settings">Settings</string>
+    <string name="fragment_settings_title">Settings</string>
+    <string name="preference_background_notif_title">Background notifications refresh</string>
+    <string name="preference_background_notif_summary">This allow you to stay informed about the latest notifications on Comunic by checking at a regular interval the existence of notifications, even if the application is closed.</string>
 </resources>

app/src/main/res/xml/app_preferences.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- Enable and / or disable notification service -->
+    <SwitchPreference
+        android:defaultValue="true"
+        android:key="enable_background_notification_refresh"
+        android:title="@string/preference_background_notif_title"
+        android:summary="@string/preference_background_notif_summary"/>
+
+</PreferenceScreen>