Can display friendship status.

app/src/main/java/org/communiquons/android/comunic/client/data/helpers/FriendsListHelper.java

@@ -7,6 +7,7 @@ import android.util.Log;
 import org.communiquons.android.comunic.client.data.models.APIRequestParameters;
 import org.communiquons.android.comunic.client.data.models.APIResponse;
 import org.communiquons.android.comunic.client.data.models.Friend;
+import org.communiquons.android.comunic.client.data.models.FriendshipStatus;
 import org.json.JSONArray;
 import org.json.JSONObject;
 
@@ -142,7 +143,7 @@ public class FriendsListHelper {
     public void respondRequest(Friend friend, boolean accept){
         try {
 
-            //Perform a request to update the satus online
+            //Perform a request to update the status online
             APIRequestParameters reqParams = new APIRequestParameters(mContext,
                     "friends/respondRequest");
             reqParams.addInt("friendID", friend.getId());
@@ -163,4 +164,43 @@ public class FriendsListHelper {
             e.printStackTrace();
         }
     }
+
+    /**
+     * Get a friendship status
+     *
+     * @param friendID The ID of the target friend
+     * @return Information about the friendship / null in case of failure
+     */
+    @Nullable
+    public FriendshipStatus getFrienshipStatus(int friendID) {
+
+        //Perform a request on the API
+        APIRequestParameters params = new APIRequestParameters(mContext, "friends/getStatus");
+        params.addInt("friendID", friendID);
+
+        try {
+
+            //Get the response
+            APIResponse response = new APIRequestHelper().exec(params);
+
+            //Check for errors
+            if(response.getResponse_code() != 200)
+                return null;
+
+            //Parse the response
+            JSONObject object = response.getJSONObject();
+            FriendshipStatus status = new FriendshipStatus();
+            status.setAreFriend(object.getBoolean("are_friend"));
+            status.setSentRequest(object.getBoolean("sent_request"));
+            status.setReceivedRequest(object.getBoolean("received_request"));
+            status.setFollowing(object.getBoolean("following"));
+
+            return status;
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+
+    }
 }

app/src/main/java/org/communiquons/android/comunic/client/data/helpers/GetUsersHelper.java

@@ -64,7 +64,7 @@ public class GetUsersHelper {
      * Public constructor of the class
      *
      * @param context The context of execution of the application
-     * @param dbHelper Databasehelpepr
+     * @param dbHelper DatabaseHelper
      */
     public GetUsersHelper(@NonNull Context context, @NonNull DatabaseHelper dbHelper){
         mContext = context;
@@ -74,8 +74,8 @@ public class GetUsersHelper {
     /**
      * Get information about a single user from the server
      *
-     * @param id The ID of the user to get informations on
+     * @param id The ID of the user to get information on
-     * @param force Force the informations to be fetched from the server
+     * @param force Force the information to be fetched from the server
      * @return User information or null in case of failure
      */
     @Nullable
@@ -103,7 +103,7 @@ public class GetUsersHelper {
                     //Add the user to the database
                     udbHelper.insertOrUpdate(infos);
 
-                    //Return user informations
+                    //Return user information
                     return infos;
 
                 }
@@ -118,10 +118,10 @@ public class GetUsersHelper {
     }
 
     /**
-     * Get advanced informations about a single user
+     * Get advanced information about a single user
      *
      * @param userID The user to get information about
-     * @return Informations about the user / null in case of failure
+     * @return Information about the user / null in case of failure
      */
     @Nullable
     public AdvancedUserInfo get_advanced_infos(int userID){
@@ -129,13 +129,31 @@ public class GetUsersHelper {
         //Perform an API request
         APIRequestParameters params = new APIRequestParameters(mContext,
                 "user/getAdvancedUserInfos");
+        params.setTryContinueOnError(true);
         params.addInt("userID", userID);
 
         //Perform the request
         try {
             APIResponse response = new APIRequestHelper().exec(params);
 
-            //Parse user informations
+            //Check if the request echoed because the user is not allowed to access it
+            if(response.getResponse_code() != 200){
+
+                if(response.getResponse_code() == 401){
+
+                    //Return an empty AdvancedUserInfo object with access forbidden set to true
+                    AdvancedUserInfo info = new AdvancedUserInfo();
+                    info.setAccessForbidden(true);
+                    return info;
+
+                }
+
+                //Else we can not do anything
+                return null;
+
+            }
+
+            //Parse user information
             return parse_advanced_user_json(response.getJSONObject());
 
         } catch (Exception e) {
@@ -368,7 +386,7 @@ public class GetUsersHelper {
     @Nullable
     private AdvancedUserInfo parse_advanced_user_json(JSONObject userObject){
 
-        //Parse basic informations about the user
+        //Parse basic information about the user
         AdvancedUserInfo advancedUserInfo = (AdvancedUserInfo)
                 parse_base_user_json(new AdvancedUserInfo(), userObject);
 
@@ -376,7 +394,7 @@ public class GetUsersHelper {
         if(advancedUserInfo == null)
             return null;
 
-        //Parse advanced user informations
+        //Parse advanced user information
         try {
 
             //Get account creation time
@@ -393,19 +411,19 @@ public class GetUsersHelper {
     }
 
     /**
-     * Parse user basic informations into a user object
+     * Parse user basic information into a user object
      *
-     * @param userInfos The user informations object to fill
+     * @param userInfos The user information object to fill
      * @param userObject The source JSON object
      * @return The filled user Infos object
      */
     @Nullable
     private UserInfo parse_base_user_json(UserInfo userInfos, JSONObject userObject){
 
-        //Try to retrieve basic user informations
+        //Try to retrieve basic user information
         try {
 
-            //Retrieve all user informations
+            //Retrieve all user information
             userInfos.setId(userObject.getInt("userID"));
             userInfos.setFirstName(userObject.getString("firstName"));
             userInfos.setLastName(userObject.getString("lastName"));
@@ -432,5 +450,12 @@ public class GetUsersHelper {
          * @param userID The ID of the user to create page
          */
         void openUserPage(int userID);
+
+        /**
+         * Open the page of a user for which the access has been denied
+         *
+         * @param userID The ID of the target user
+         */
+        void openUserAccessDeniedPage(int userID);
     }
 }

app/src/main/java/org/communiquons/android/comunic/client/data/models/AdvancedUserInfo.java

@@ -11,6 +11,7 @@ public class AdvancedUserInfo extends UserInfo {
 
     //Private fields
     private int account_creation_time;
+    private boolean accessForbidden = false;
 
     /**
      * Get the account creation time
@@ -29,4 +30,22 @@ public class AdvancedUserInfo extends UserInfo {
     public void setAccount_creation_time(int account_creation_time) {
         this.account_creation_time = account_creation_time;
     }
+
+    /**
+     * Check whether the access to the page is forbidden or not
+     *
+     * @return TRUE if the access to the page is forbidden / FALSE else
+     */
+    public boolean isAccessForbidden() {
+        return accessForbidden;
+    }
+
+    /**
+     * Set the forbidden state of the page
+     *
+     * @param accessForbidden TRUE if the access to the page is forbidden / FALSE else
+     */
+    public void setAccessForbidden(boolean accessForbidden) {
+        this.accessForbidden = accessForbidden;
+    }
 }

app/src/main/java/org/communiquons/android/comunic/client/data/models/FriendshipStatus.java

@@ -0,0 +1,56 @@
+package org.communiquons.android.comunic.client.data.models;
+
+/**
+ * This models handles a friendship status
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 4/12/18.
+ */
+
+public class FriendshipStatus {
+
+    //Private fields
+    private boolean isFriend;
+    private boolean sentRequest;
+    private boolean receivedRequest;
+    private boolean following;
+
+
+    //Set and get the "are friend" value
+    public void setAreFriend(boolean areFriend) {
+        this.isFriend = areFriend;
+    }
+
+    public boolean isFriend() {
+        return isFriend;
+    }
+
+
+    //Set and get the sent request status
+    public void setSentRequest(boolean sentRequest) {
+        this.sentRequest = sentRequest;
+    }
+
+    public boolean isSentRequest() {
+        return sentRequest;
+    }
+
+
+    //Set and get the received request status
+    public void setReceivedRequest(boolean receivedRequest) {
+        this.receivedRequest = receivedRequest;
+    }
+
+    public boolean isReceivedRequest() {
+        return receivedRequest;
+    }
+
+    //Set and get the following status
+    public void setFollowing(boolean following) {
+        this.following = following;
+    }
+
+    public boolean isFollowing() {
+        return following;
+    }
+}

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

@@ -24,6 +24,7 @@ import org.communiquons.android.comunic.client.data.helpers.GetUsersHelper;
 import org.communiquons.android.comunic.client.data.helpers.ConversationsListHelper;
 import org.communiquons.android.comunic.client.data.runnables.FriendRefreshLoopRunnable;
 import org.communiquons.android.comunic.client.data.services.NotificationsService;
+import org.communiquons.android.comunic.client.ui.fragments.UserAccessDeniedFragment;
 import org.communiquons.android.comunic.client.ui.utils.UiUtils;
 import org.communiquons.android.comunic.client.ui.fragments.ConversationFragment;
 import org.communiquons.android.comunic.client.ui.fragments.ConversationsListFragment;
@@ -339,6 +340,36 @@ public class MainActivity extends AppCompatActivity
 
     }
 
+    /**
+     * Open the page of a user for which the access has been denied
+     *
+     * @param userID The ID of the target user
+     */
+    @Override
+    public void openUserAccessDeniedPage(int userID) {
+
+        //Prepare the argument
+        Bundle args = new Bundle();
+        args.putInt(UserAccessDeniedFragment.ARGUMENT_USER_ID, userID);
+
+        //Create fragment
+        UserAccessDeniedFragment userAccessDeniedFragment = new UserAccessDeniedFragment();
+        userAccessDeniedFragment.setArguments(args);
+
+        //Remove the last entry of the backstack
+        //This is important in order to avoid to get the user unable to quit the page.
+        //Because it would get the user back to the user page fragment which would
+        //redirect immediately to this fragment indefinitely.
+        getFragmentManager().popBackStackImmediate();
+
+        //Perform the transition
+        FragmentTransaction transaction = getFragmentManager().beginTransaction();
+        transaction.addToBackStack(null);
+        transaction.replace(R.id.main_fragment, userAccessDeniedFragment);
+        transaction.commit();
+
+    }
+
     /**
      * Open the conversation list fragment
      */

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

@@ -19,9 +19,11 @@ import android.widget.ProgressBar;
 import android.widget.Toast;
 
 import org.communiquons.android.comunic.client.R;
+import org.communiquons.android.comunic.client.data.enums.NotifElemType;
 import org.communiquons.android.comunic.client.data.helpers.GetUsersHelper;
 import org.communiquons.android.comunic.client.data.helpers.NotificationsHelper;
 import org.communiquons.android.comunic.client.data.arrays.NotifsList;
+import org.communiquons.android.comunic.client.data.models.Notif;
 import org.communiquons.android.comunic.client.ui.activities.MainActivity;
 import org.communiquons.android.comunic.client.ui.adapters.NotificationsAdapter;
 
@@ -32,7 +34,8 @@ import org.communiquons.android.comunic.client.ui.adapters.NotificationsAdapter;
  * Created by pierre on 4/1/18.
  */
 
-public class NotificationsFragment extends Fragment implements View.OnCreateContextMenuListener {
+public class NotificationsFragment extends Fragment implements View.OnCreateContextMenuListener,
+        AdapterView.OnItemClickListener {
 
     /**
      * Notifications helper
@@ -69,6 +72,10 @@ public class NotificationsFragment extends Fragment implements View.OnCreateCont
      */
     private ProgressBar mLoadingProgress;
 
+    /**
+     * User page opener
+     */
+    private GetUsersHelper.onOpenUsersPageListener mUserPageOpener;
 
     @Override
     public void onAttach(Context context) {
@@ -118,6 +125,9 @@ public class NotificationsFragment extends Fragment implements View.OnCreateCont
         ((MainActivity) getActivity())
                 .setSelectedNavigationItem(R.id.main_bottom_navigation_notif);
 
+        //Get user page opener
+        mUserPageOpener = (GetUsersHelper.onOpenUsersPageListener) getActivity();
+
         //Check if it is required to fetch the list of notifications
         if(mNotificationsList == null){
 
@@ -251,6 +261,7 @@ public class NotificationsFragment extends Fragment implements View.OnCreateCont
 
         //Set context menu creator
         mNotificationsListView.setOnCreateContextMenuListener(this);
+        mNotificationsListView.setOnItemClickListener(this);
     }
 
     @Override
@@ -315,4 +326,23 @@ public class NotificationsFragment extends Fragment implements View.OnCreateCont
             }
         }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, notifID);
     }
+
+    @Override
+    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+
+        //Delete the notification
+        //deleteNotification(position);
+
+        //Perform notification action
+        Notif notif = mNotificationsList.get(position);
+
+        //For friendship request
+        if(notif.getOn_elem_type() == NotifElemType.FRIEND_REQUEST){
+
+            //Open user page
+            mUserPageOpener.openUserPage(notif.getFrom_user_id());
+
+        }
+
+    }
 }

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

@@ -0,0 +1,266 @@
+package org.communiquons.android.comunic.client.ui.fragments;
+
+import android.app.Fragment;
+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.Button;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import org.communiquons.android.comunic.client.R;
+import org.communiquons.android.comunic.client.data.helpers.FriendsListHelper;
+import org.communiquons.android.comunic.client.data.helpers.GetUsersHelper;
+import org.communiquons.android.comunic.client.data.helpers.ImageLoadHelper;
+import org.communiquons.android.comunic.client.data.models.FriendshipStatus;
+import org.communiquons.android.comunic.client.data.models.UserInfo;
+import org.communiquons.android.comunic.client.ui.activities.MainActivity;
+
+/**
+ * User access denied fragment
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 4/11/18.
+ */
+
+public class UserAccessDeniedFragment extends Fragment {
+
+    /**
+     * The name in the bundle of the target user ID
+     */
+    public static final String ARGUMENT_USER_ID = "user_id";
+
+    /**
+     * The ID of the target user
+     */
+    private int mUserID;
+
+    /**
+     * Get user helper
+     */
+    private GetUsersHelper mUserHelper;
+
+    /**
+     * Friend list helper
+     */
+    private FriendsListHelper mFriendListHelper;
+
+    /**
+     * Information about the user
+     */
+    private UserInfo mUserInfo;
+
+    /**
+     * Information about the friendship status
+     */
+    private FriendshipStatus mFriendshipStatus;
+
+    /**
+     * User account image
+     */
+    private ImageView mUserImage;
+
+    /**
+     * User account name
+     */
+    private TextView mUserName;
+
+    /**
+     * Send request button
+     */
+    private Button mSendRequestButton;
+
+    /**
+     * Cancel request button
+     */
+    private Button mCancelRequestButton;
+
+    /**
+     * Accept request button
+     */
+    private Button mAcceptRequestButton;
+
+    /**
+     * Reject request button
+     */
+    private Button mRejectRequestButton;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        //Create get user helper
+        mUserHelper = new GetUsersHelper(getActivity());
+
+        //Create friend info helper
+        mFriendListHelper = new FriendsListHelper(getActivity());
+
+        //Save the ID of the target user
+        mUserID = getArguments().getInt(ARGUMENT_USER_ID);
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_user_access_denied, container, false);
+    }
+
+    @Override
+    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        //Get user related fields
+        mUserImage = view.findViewById(R.id.user_account_image);
+        mUserName = view.findViewById(R.id.user_account_name);
+
+        //Get the buttons
+        mSendRequestButton = view.findViewById(R.id.button_send_request);
+        mCancelRequestButton = view.findViewById(R.id.button_cancel_request);
+        mAcceptRequestButton = view.findViewById(R.id.button_accept_request);
+        mRejectRequestButton = view.findViewById(R.id.button_reject_request);
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        //Update activity dock
+        ((MainActivity) getActivity())
+                .setSelectedNavigationItem(R.id.main_bottom_navigation_me_view);
+
+        //Check if it is required to fetch user information
+        if(mUserInfo == null){
+            getUserInfo();
+        }
+        else
+            onGotUserInfos(mUserInfo);
+    }
+
+    /**
+     * This method get user information. Once it got it, it shows these information on the screen
+     */
+    private void getUserInfo(){
+
+        //Perform the task in the background
+        new AsyncTask<Integer, Void, UserInfo>(){
+
+            @Override
+            protected UserInfo doInBackground(Integer... params) {
+                //Force information about the user to be pulled
+                return mUserHelper.getSingle(mUserID, true);
+            }
+
+            @Override
+            protected void onPostExecute(@Nullable UserInfo userInfo) {
+                if(getActivity() == null)
+                    return;
+
+                onGotUserInfos(userInfo);
+            }
+        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, mUserID);
+    }
+
+    /**
+     * This method is called once we got information about the user
+     *
+     * @param info Information about the user / null in case of failure
+     */
+    private void onGotUserInfos(@Nullable UserInfo info){
+
+        //Check for error
+        if(info == null){
+            Toast.makeText(getActivity(), R.string.err_get_user_info, Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        //Save user information
+        mUserInfo = info;
+
+        //Update activity name
+        getActivity().setTitle(mUserInfo.getDisplayFullName());
+
+        //Append user information
+        mUserName.setText(mUserInfo.getDisplayFullName());
+        ImageLoadHelper.load(getActivity(), mUserInfo.getAcountImageURL(), mUserImage);
+
+        //Check if we have got the friends
+        if(mFriendshipStatus == null){
+            getFrienshipStatus();
+        }
+        else {
+            onGotFriendshipStatus(mFriendshipStatus);
+        }
+    }
+
+    /**
+     * Get the information about the friendship between the two users
+     */
+    private void getFrienshipStatus(){
+
+        //Perform the request in the background
+        new AsyncTask<Integer, Void, FriendshipStatus>(){
+
+            @Override
+            protected FriendshipStatus doInBackground(Integer... params) {
+                return mFriendListHelper.getFrienshipStatus(params[0]);
+            }
+
+            @Override
+            protected void onPostExecute(FriendshipStatus status) {
+                if(getActivity() == null)
+                    return;
+
+                onGotFriendshipStatus(status);
+            }
+        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, mUserID);
+
+    }
+
+    /**
+     * This method is called once we got information about the friendship status
+     *
+     * @param status The status of the frienship or null in case of failure
+     */
+    private void onGotFriendshipStatus(@Nullable FriendshipStatus status){
+
+        //Check for errors
+        if(status == null){
+            Toast.makeText(getActivity(), R.string.err_get_friendship_status,
+                    Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        //Save the friendship status
+        mFriendshipStatus = status;
+
+        //Hide all the button by default
+        mSendRequestButton.setVisibility(View.GONE);
+        mCancelRequestButton.setVisibility(View.GONE);
+        mAcceptRequestButton.setVisibility(View.GONE);
+        mRejectRequestButton.setVisibility(View.GONE);
+
+        //Check if the users are friend
+        if(mFriendshipStatus.isFriend())
+            return;
+
+        //Check if the current user has sent a friendship request
+        if(mFriendshipStatus.isSentRequest()){
+            mCancelRequestButton.setVisibility(View.VISIBLE);
+        }
+
+        //Check if the current user has received a friendship request
+        else if(mFriendshipStatus.isReceivedRequest()){
+            mAcceptRequestButton.setVisibility(View.VISIBLE);
+            mRejectRequestButton.setVisibility(View.VISIBLE);
+        }
+
+        //Else the users have not pending request
+        else {
+            mSendRequestButton.setVisibility(View.VISIBLE);
+        }
+    }
+}

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

@@ -107,6 +107,11 @@ public class UserPageFragment extends Fragment implements PostsCreateFormFragmen
      */
     private View mCreatePostForm;
 
+    /**
+     * User page open listener
+     */
+    private GetUsersHelper.onOpenUsersPageListener mOpenUsersPageListener;
+
 
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
@@ -123,6 +128,9 @@ public class UserPageFragment extends Fragment implements PostsCreateFormFragmen
 
         //Create posts helper instance
         mPostsHelper = new PostsHelper(getActivity());
+
+        //Get the open user page listener
+        mOpenUsersPageListener = (GetUsersHelper.onOpenUsersPageListener) getActivity();
     }
 
     @Nullable
@@ -215,6 +223,14 @@ public class UserPageFragment extends Fragment implements PostsCreateFormFragmen
             return;
         }
 
+        //Check if the user is not allowed to access user information
+        if(info.isAccessForbidden()){
+            //Open appropriate fragment
+            mOpenUsersPageListener.openUserAccessDeniedPage(mUserID);
+            return;
+        }
+
+
         //Save user information
         userInfo = info;
 

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

@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <!-- Basic account information -->
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:layout_marginTop="16dp">
+
+        <ImageView
+            android:id="@+id/user_account_image"
+            android:layout_width="@dimen/account_image_default_width"
+            android:layout_height="@dimen/account_image_default_height"
+            android:src="@drawable/default_account_image"
+            android:contentDescription="@string/user_image_description"
+            android:layout_marginEnd="10dp"/>
+
+        <TextView
+            android:id="@+id/user_account_name"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            tools:text="User account name"
+            android:layout_gravity="center_vertical"/>
+
+    </LinearLayout>
+
+
+
+    <!-- Available actions -->
+    <LinearLayout
+        android:id="@+id/buttons_list"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        android:layout_marginTop="0dp">
+
+        <Button
+            android:id="@+id/button_send_request"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/button_send_friend_request"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent" />
+
+        <Button
+            android:id="@+id/button_cancel_request"
+            style="@style/Widget.AppCompat.Button.Colored"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/button_cancel_friend_request"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/button_send_request" />
+
+        <Button
+            android:id="@+id/button_accept_request"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/button_accept_friend_request"
+            app:layout_constraintTop_toBottomOf="@+id/button_cancel_request"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintLeft_toLeftOf="parent" />
+
+        <Button
+            android:id="@+id/button_reject_request"
+            style="@style/Widget.AppCompat.Button.Colored"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/button_reject_friend_request"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/button_accept_request" />
+    </LinearLayout>
+
+    <!-- Account private notice -->
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="0dp"
+        android:text="@string/notice_user_page_private"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/buttons_list"
+        android:layout_marginBottom="8dp" />
+
+</android.support.constraint.ConstraintLayout>

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

@@ -7,7 +7,7 @@
     <color name="holo_green_dark">#ff669900</color>
     <color name="darker_gray">#aaa</color>
     <color name="darker_darker_gray">#5b5b5b</color>
-    <color name="dark_blue">#303F9F</color>
+    <color name="dark_blue">#303f9f</color>
 
     <!-- Conversation messages -->
     <color name="conversation_user_messages_background">#3F51B5</color>

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

@@ -50,7 +50,7 @@
     <string name="date_m">m</string>
     <string name="date_s">s</string>
     <string name="date_hours">date_hours</string>
-    <string name="err_get_user_info">Couldn\'t get user information !</string>
+    <string name="err_get_user_info">Could not get user information !</string>
     <string name="fragment_conversation_err_load_message">Could not load messages!</string>
     <string name="fragment_conversation_message_image">Conversation message image</string>
     <string name="conversation_message_send">Send</string>
@@ -166,4 +166,10 @@
     <string name="notif_on_user_page">on %1$s\'s page</string>
     <string name="action_delete_notification">Delete</string>
     <string name="err_delete_notification">An error occurred while trying to delete the notification!</string>
+    <string name="notice_user_page_private">This account is private.</string>
+    <string name="button_send_friend_request">Send request</string>
+    <string name="button_cancel_friend_request">Cancel request</string>
+    <string name="button_accept_friend_request">Accept request</string>
+    <string name="button_reject_friend_request">Reject request</string>
+    <string name="err_get_friendship_status">An error occurred while retrieving friendship status!</string>
 </resources>