Can delete the entire list of notifications.

app/src/main/java/org/communiquons/android/comunic/client/data/notifications/NotificationsHelper.java

@@ -64,4 +64,25 @@ public class NotificationsHelper {
         }
     }
 
+    /**
+     * Intend to delete the entire list of notifications
+     *
+     * @return TRUE in case of success / FALSE else
+     */
+    public boolean deleteAllNotifs(){
+
+        //Perform a request on the server
+        APIRequestParameters params = new APIRequestParameters(mContext,
+                "notifications/delete_all");
+
+        //Try to perform the request on the server
+        try {
+            APIResponse response = new APIRequest().exec(params);
+            return response.getResponse_code() == 200;
+        } catch (Exception e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
 }

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

@@ -112,9 +112,9 @@ public class MainActivity extends AppCompatActivity
         //Initialize conversation list helper
         conversationsListHelper = new ConversationsListHelper(this, dbHelper);
 
-        //If it is the first time the application is launched, start the user friends tab
+        //If it is the first time the application is launched, open notifications fragment
         if(savedInstanceState == null){
-            openFriendsFragment();
+            openNotificationsFragment();
         }
     }
 

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

@@ -1,13 +1,19 @@
 package org.communiquons.android.comunic.client.ui.fragments;
 
+import android.app.AlertDialog;
 import android.app.Fragment;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Toast;
 
 import org.communiquons.android.comunic.client.R;
+import org.communiquons.android.comunic.client.data.notifications.NotificationsHelper;
 import org.communiquons.android.comunic.client.ui.activities.MainActivity;
 
 /**
@@ -19,12 +25,44 @@ import org.communiquons.android.comunic.client.ui.activities.MainActivity;
 
 public class NotificationsFragment extends Fragment {
 
+    /**
+     * Notifications helper
+     */
+    private NotificationsHelper mNotificationsHelper;
+
+    /**
+     * Delete all the notifications button
+     */
+    private View mDeleteNotificationsBtn;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+
+        //Create notifications helper
+        mNotificationsHelper = new NotificationsHelper(context);
+    }
+
     @Nullable
     @Override
     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
         return inflater.inflate(R.layout.fragment_notifications, container, false);
     }
 
+    @Override
+    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        //Delete all the notifications action
+        mDeleteNotificationsBtn = view.findViewById(R.id.delete_all_notif_btn);
+        mDeleteNotificationsBtn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                confirmNotificationsDeletion();
+            }
+        });
+    }
+
     @Override
     public void onResume() {
         super.onResume();
@@ -36,4 +74,62 @@ public class NotificationsFragment extends Fragment {
         ((MainActivity) getActivity())
                 .setSelectedNavigationItem(R.id.main_bottom_navigation_notif);
     }
+
+    /**
+     * Ask the user to confirm the deletion of all the notifications
+     */
+    private void confirmNotificationsDeletion(){
+
+        //Create and display a confirmation dialog
+        new AlertDialog.Builder(getActivity())
+                .setTitle(R.string.dialog_deleteallnotifs_title)
+                .setMessage(R.string.dialog_deleteallnotifs_message)
+                .setNegativeButton(R.string.dialog_deleteallnotifs_cancel, null)
+
+                .setPositiveButton(R.string.dialog_deleteallnotifs_confirm,
+                        new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        processAllNotificationsDeletion();
+                    }
+                })
+
+                .show();
+
+    }
+
+    /**
+     * Do the deletion of all the notifications
+     */
+    private void processAllNotificationsDeletion(){
+
+        //Perform the operation in the background
+        new AsyncTask<Void, Void, Boolean>(){
+
+            @Override
+            protected Boolean doInBackground(Void... params) {
+                return mNotificationsHelper.deleteAllNotifs();
+            }
+
+            @Override
+            protected void onPostExecute(Boolean result) {
+
+                //Check if the activity has been destroyed
+                if(getActivity() == null)
+                    return;
+
+                //Check for error
+                if(!result) {
+                    Toast.makeText(getActivity(), R.string.err_delete_all_notifs,
+                            Toast.LENGTH_SHORT).show();
+                    return;
+                }
+
+                //Success
+                Toast.makeText(getActivity(), R.string.success_delete_all_notifs,
+                        Toast.LENGTH_SHORT).show();
+            }
+        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+
+    }
 }

app/src/main/res/layout/fragment_notifications.xml

@@ -3,4 +3,26 @@
     android:orientation="vertical" android:layout_width="match_parent"
     android:layout_height="match_parent">
 
+    <!-- Notification loading progress -->
+    <ProgressBar
+        android:id="@+id/loading_progress"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:layout_marginTop="10dp"/>
+
+    <!-- Notifications list -->
+    <ListView
+        android:id="@+id/notificcation_list"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"/>
+
+    <!-- Delete all the notifications button -->
+    <Button
+        android:id="@+id/delete_all_notif_btn"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/action_delete_all_notifications"/>
+
 </LinearLayout>

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

@@ -149,4 +149,11 @@
     <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>
     <string name="notification_notif_available_title">New activity on Comunic</string>
     <string name="notification_notif_available_content"> %1$d notification(s) and %2$d unread conversations(s)</string>
+    <string name="action_delete_all_notifications">Delete all the notifications</string>
+    <string name="dialog_deleteallnotifs_title">Delete all the notifications</string>
+    <string name="dialog_deleteallnotifs_message">Are you sure do you want to delete all the notifications ? This can not be undone!</string>
+    <string name="dialog_deleteallnotifs_cancel">No</string>
+    <string name="dialog_deleteallnotifs_confirm">Yes</string>
+    <string name="err_delete_all_notifs">An error occurred while trying to delete the entire list of notifications!</string>
+    <string name="success_delete_all_notifs">All the notifications have been deleted!</string>
 </resources>