From e0106e23e5bae826d7e37b020d82692b5396d2b7 Mon Sep 17 00:00:00 2001
From: Alex Ning <chineseperson5@gmail.com>
Date: Fri, 26 Feb 2021 12:26:21 +0800
Subject: Multi-selection in user search result for
 CustomizePostFilterActivity.

---
 .../activities/CustomizePostFilterActivity.java    | 26 ++++---
 .../activities/SearchActivity.java                 | 14 +++-
 .../activities/SearchSubredditsResultActivity.java |  8 +-
 .../activities/SearchUsersResultActivity.java      | 34 ++++++++
 .../adapters/UserListingRecyclerViewAdapter.java   | 90 +++++++++++++---------
 .../fragments/SubredditListingFragment.java        |  6 +-
 .../fragments/UserListingFragment.java             | 25 +++++-
 .../infinityforreddit/user/UserData.java           | 12 +++
 app/src/main/res/layout/item_subreddit_listing.xml |  3 +-
 app/src/main/res/layout/item_user_listing.xml      |  9 +++
 .../main/res/menu/search_users_result_activity.xml | 10 +++
 11 files changed, 176 insertions(+), 61 deletions(-)
 create mode 100644 app/src/main/res/menu/search_users_result_activity.xml

(limited to 'app/src')

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CustomizePostFilterActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CustomizePostFilterActivity.java
index c2e48860..cf3a0f35 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CustomizePostFilterActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CustomizePostFilterActivity.java
@@ -247,6 +247,7 @@ public class CustomizePostFilterActivity extends BaseActivity {
         addUsersImageView.setOnClickListener(view -> {
             Intent intent = new Intent(this, SearchActivity.class);
             intent.putExtra(SearchActivity.EXTRA_SEARCH_ONLY_USERS, true);
+            intent.putExtra(SearchActivity.EXTRA_IS_MULTI_SELECTION, true);
             startActivityForResult(intent, ADD_USERS_REQUEST_CODE);
         });
 
@@ -423,28 +424,35 @@ public class CustomizePostFilterActivity extends BaseActivity {
         super.onActivityResult(requestCode, resultCode, data);
         if (resultCode == RESULT_OK && data != null) {
             if (requestCode == ADD_SUBREDDITS_REQUEST_CODE) {
-                ArrayList<String> subreddits = data.getStringArrayListExtra(SubredditMultiselectionActivity.EXTRA_RETURN_SELECTED_SUBREDDITS);
+                ArrayList<String> subredditNames = data.getStringArrayListExtra(SubredditMultiselectionActivity.EXTRA_RETURN_SELECTED_SUBREDDITS);
                 String currentSubreddits = excludesSubredditsTextInputEditText.getText().toString().trim();
-                if (!currentSubreddits.isEmpty() && currentSubreddits.charAt(currentSubreddits.length() - 1) != ',') {
+                if (subredditNames != null && !currentSubreddits.isEmpty() && currentSubreddits.charAt(currentSubreddits.length() - 1) != ',') {
                     String newString = currentSubreddits + ",";
                     excludesSubredditsTextInputEditText.setText(newString);
                 }
-                if (subreddits != null) {
+                if (subredditNames != null) {
                     StringBuilder stringBuilder = new StringBuilder();
-                    for (String s : subreddits) {
+                    for (String s : subredditNames) {
                         stringBuilder.append(s).append(",");
                     }
                     stringBuilder.deleteCharAt(stringBuilder.length() - 1);
                     excludesSubredditsTextInputEditText.append(stringBuilder.toString());
                 }
             } else if (requestCode == ADD_USERS_REQUEST_CODE) {
-                String username = data.getStringExtra(SearchActivity.EXTRA_RETURN_USER_NAME);
-                String currentUsers = excludesSubredditsTextInputEditText.getText().toString().trim();
-                if (!currentUsers.isEmpty() && currentUsers.charAt(currentUsers.length() - 1) != ',') {
+                ArrayList<String> usernames = data.getStringArrayListExtra(SearchActivity.RETURN_EXTRA_SELECTED_USERNAMES);
+                String currentUsers = excludesUsersTextInputEditText.getText().toString().trim();
+                if (usernames != null && !currentUsers.isEmpty() && currentUsers.charAt(currentUsers.length() - 1) != ',') {
                     String newString = currentUsers + ",";
-                    excludesSubredditsTextInputEditText.setText(newString);
+                    excludesUsersTextInputEditText.setText(newString);
+                }
+                if (usernames != null) {
+                    StringBuilder stringBuilder = new StringBuilder();
+                    for (String s : usernames) {
+                        stringBuilder.append(s).append(",");
+                    }
+                    stringBuilder.deleteCharAt(stringBuilder.length() - 1);
+                    excludesUsersTextInputEditText.append(stringBuilder.toString());
                 }
-                excludesUsersTextInputEditText.append(username);
             }
         }
     }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchActivity.java
index 903f2180..6cb3b1e4 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchActivity.java
@@ -54,6 +54,7 @@ public class SearchActivity extends BaseActivity {
     static final String EXTRA_RETURN_SUBREDDIT_NAME = "ERSN";
     static final String EXTRA_RETURN_SUBREDDIT_ICON_URL = "ERSIU";
     static final String RETURN_EXTRA_SELECTED_SUBREDDIT_NAMES = "RESSN";
+    static final String RETURN_EXTRA_SELECTED_USERNAMES = "RESU";
     static final String EXTRA_RETURN_USER_NAME = "ERUN";
     static final String EXTRA_RETURN_USER_ICON_URL = "ERUIU";
     static final String EXTRA_IS_MULTI_SELECTION = "EIMS";
@@ -256,6 +257,7 @@ public class SearchActivity extends BaseActivity {
         } else if (searchOnlyUsers) {
             Intent intent = new Intent(this, SearchUsersResultActivity.class);
             intent.putExtra(SearchUsersResultActivity.EXTRA_QUERY, query);
+            intent.putExtra(SearchUsersResultActivity.EXTRA_IS_MULTI_SELECTION, getIntent().getBooleanExtra(EXTRA_IS_MULTI_SELECTION, false));
             startActivityForResult(intent, USER_SEARCH_REQUEST_CODE);
         } else {
             Intent intent = new Intent(SearchActivity.this, SearchResultActivity.class);
@@ -355,11 +357,15 @@ public class SearchActivity extends BaseActivity {
                 setResult(Activity.RESULT_OK, returnIntent);
                 finish();
             } else if (requestCode == USER_SEARCH_REQUEST_CODE) {
-                String username = data.getStringExtra(SearchUsersResultActivity.EXTRA_RETURN_USER_NAME);
-                String iconUrl = data.getStringExtra(SearchUsersResultActivity.EXTRA_RETURN_USER_ICON_URL);
                 Intent returnIntent = new Intent();
-                returnIntent.putExtra(EXTRA_RETURN_USER_NAME, username);
-                returnIntent.putExtra(EXTRA_RETURN_USER_ICON_URL, iconUrl);
+                if (getIntent().getBooleanExtra(EXTRA_IS_MULTI_SELECTION, false)) {
+                    returnIntent.putStringArrayListExtra(RETURN_EXTRA_SELECTED_USERNAMES, data.getStringArrayListExtra(SearchUsersResultActivity.RETURN_EXTRA_SELECTED_USERNAMES));
+                } else {
+                    String username = data.getStringExtra(SearchUsersResultActivity.EXTRA_RETURN_USER_NAME);
+                    String iconUrl = data.getStringExtra(SearchUsersResultActivity.EXTRA_RETURN_USER_ICON_URL);
+                    returnIntent.putExtra(EXTRA_RETURN_USER_NAME, username);
+                    returnIntent.putExtra(EXTRA_RETURN_USER_ICON_URL, iconUrl);
+                }
                 setResult(Activity.RESULT_OK, returnIntent);
                 finish();
             }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchSubredditsResultActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchSubredditsResultActivity.java
index 597c9ca2..3b6ead1a 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchSubredditsResultActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchSubredditsResultActivity.java
@@ -169,13 +169,9 @@ public class SearchSubredditsResultActivity extends BaseActivity implements Acti
             return true;
         } else if (item.getItemId() == R.id.action_save_search_subreddits_result_activity) {
             if (mFragment != null) {
-                List<SubredditData> subreddits = ((SubredditListingFragment) mFragment).getSelectedSubreddits();
-                ArrayList<String> subredditNames = new ArrayList<>();
-                for (SubredditData s : subreddits) {
-                    subredditNames.add(s.getName());
-                }
+                ArrayList<String> selectedSubredditNames = ((SubredditListingFragment) mFragment).getSelectedSubredditNames();
                 Intent returnIntent = new Intent();
-                returnIntent.putStringArrayListExtra(RETURN_EXTRA_SELECTED_SUBREDDIT_NAMES, subredditNames);
+                returnIntent.putStringArrayListExtra(RETURN_EXTRA_SELECTED_SUBREDDIT_NAMES, selectedSubredditNames);
                 setResult(Activity.RESULT_OK, returnIntent);
                 finish();
             }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchUsersResultActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchUsersResultActivity.java
index 37c470b3..2fbfc150 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchUsersResultActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/SearchUsersResultActivity.java
@@ -5,6 +5,8 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Build;
 import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.Window;
 import android.view.WindowManager;
@@ -20,6 +22,8 @@ import com.r0adkll.slidr.Slidr;
 import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
 
+import java.util.ArrayList;
+
 import javax.inject.Inject;
 import javax.inject.Named;
 
@@ -36,8 +40,10 @@ import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 public class SearchUsersResultActivity extends BaseActivity implements ActivityToolbarInterface {
 
     static final String EXTRA_QUERY = "EQ";
+    static final String EXTRA_IS_MULTI_SELECTION = "EIMS";
     static final String EXTRA_RETURN_USER_NAME = "ERUN";
     static final String EXTRA_RETURN_USER_ICON_URL = "ERUIU";
+    static final String RETURN_EXTRA_SELECTED_USERNAMES = "RESU";
 
     private static final String FRAGMENT_OUT_STATE = "FOS";
 
@@ -111,6 +117,7 @@ public class SearchUsersResultActivity extends BaseActivity implements ActivityT
             bundle.putBoolean(UserListingFragment.EXTRA_IS_GETTING_USER_INFO, true);
             bundle.putString(UserListingFragment.EXTRA_ACCESS_TOKEN, mAccessToken);
             bundle.putString(UserListingFragment.EXTRA_ACCOUNT_NAME, mAccountName);
+            bundle.putBoolean(UserListingFragment.EXTRA_IS_MULTI_SELECTION, getIntent().getBooleanExtra(EXTRA_IS_MULTI_SELECTION, false));
             mFragment.setArguments(bundle);
             getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_search_users_result_activity, mFragment).commit();
         } else {
@@ -143,6 +150,33 @@ public class SearchUsersResultActivity extends BaseActivity implements ActivityT
         finish();
     }
 
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        if (getIntent().getBooleanExtra(EXTRA_IS_MULTI_SELECTION, false)) {
+            getMenuInflater().inflate(R.menu.search_users_result_activity, menu);
+            applyMenuItemTheme(menu);
+        }
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            finish();
+            return true;
+        } else if (item.getItemId() == R.id.action_save_search_users_result_activity) {
+            if (mFragment != null) {
+                ArrayList<String> selectedUsernames = ((UserListingFragment) mFragment).getSelectedUsernames();
+                Intent returnIntent = new Intent();
+                returnIntent.putStringArrayListExtra(RETURN_EXTRA_SELECTED_USERNAMES, selectedUsernames);
+                setResult(Activity.RESULT_OK, returnIntent);
+                finish();
+            }
+            return true;
+        }
+        return false;
+    }
+
     @Override
     protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/UserListingRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/UserListingRecyclerViewAdapter.java
index f8c9f993..5beedeef 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/UserListingRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/UserListingRecyclerViewAdapter.java
@@ -22,6 +22,7 @@ import androidx.recyclerview.widget.RecyclerView;
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.RequestManager;
 import com.bumptech.glide.request.RequestOptions;
+import com.google.android.material.checkbox.MaterialCheckBox;
 
 import java.util.concurrent.Executor;
 
@@ -61,6 +62,7 @@ public class UserListingRecyclerViewAdapter extends PagedListAdapter<UserData, R
     private String accessToken;
     private String accountName;
     private RedditDataRoomDatabase redditDataRoomDatabase;
+    private boolean isMultiSelection;
 
     private int primaryTextColor;
     private int buttonTextColor;
@@ -74,7 +76,7 @@ public class UserListingRecyclerViewAdapter extends PagedListAdapter<UserData, R
     public UserListingRecyclerViewAdapter(Context context, Executor executor, Retrofit oauthRetrofit, Retrofit retrofit,
                                           CustomThemeWrapper customThemeWrapper, String accessToken,
                                           String accountName, RedditDataRoomDatabase redditDataRoomDatabase,
-                                          Callback callback) {
+                                          boolean isMultiSelection, Callback callback) {
         super(DIFF_CALLBACK);
         this.context = context;
         this.executor = executor;
@@ -83,6 +85,7 @@ public class UserListingRecyclerViewAdapter extends PagedListAdapter<UserData, R
         this.accessToken = accessToken;
         this.accountName = accountName;
         this.redditDataRoomDatabase = redditDataRoomDatabase;
+        this.isMultiSelection = isMultiSelection;
         this.callback = callback;
         glide = Glide.with(context);
         primaryTextColor = customThemeWrapper.getPrimaryTextColor();
@@ -97,7 +100,7 @@ public class UserListingRecyclerViewAdapter extends PagedListAdapter<UserData, R
     public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
         if (viewType == VIEW_TYPE_DATA) {
             ConstraintLayout constraintLayout = (ConstraintLayout) LayoutInflater.from(parent.getContext()).inflate(R.layout.item_user_listing, parent, false);
-            return new UserListingRecyclerViewAdapter.DataViewHolder(constraintLayout);
+            return new DataViewHolder(constraintLayout);
         } else if (viewType == VIEW_TYPE_ERROR) {
             RelativeLayout relativeLayout = (RelativeLayout) LayoutInflater.from(parent.getContext()).inflate(R.layout.item_footer_error, parent, false);
             return new UserListingRecyclerViewAdapter.ErrorViewHolder(relativeLayout);
@@ -109,11 +112,15 @@ public class UserListingRecyclerViewAdapter extends PagedListAdapter<UserData, R
 
     @Override
     public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
-        if (holder instanceof UserListingRecyclerViewAdapter.DataViewHolder) {
+        if (holder instanceof DataViewHolder) {
             UserData userData = getItem(position);
             if (userData != null) {
-                ((UserListingRecyclerViewAdapter.DataViewHolder) holder).constraintLayout.setOnClickListener(view -> {
-                    callback.userSelected(userData.getName(), userData.getIconUrl());
+                ((DataViewHolder) holder).constraintLayout.setOnClickListener(view -> {
+                    if (isMultiSelection) {
+                        ((DataViewHolder) holder).checkBox.performClick();
+                    } else {
+                        callback.userSelected(userData.getName(), userData.getIconUrl());
+                    }
                 });
 
                 if (!userData.getIconUrl().equals("")) {
@@ -121,43 +128,47 @@ public class UserListingRecyclerViewAdapter extends PagedListAdapter<UserData, R
                             .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
                             .error(glide.load(R.drawable.subreddit_default_icon)
                                     .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0))))
-                            .into(((UserListingRecyclerViewAdapter.DataViewHolder) holder).iconGifImageView);
+                            .into(((DataViewHolder) holder).iconGifImageView);
                 } else {
                     glide.load(R.drawable.subreddit_default_icon)
                             .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
-                            .into(((UserListingRecyclerViewAdapter.DataViewHolder) holder).iconGifImageView);
+                            .into(((DataViewHolder) holder).iconGifImageView);
                 }
 
-                ((UserListingRecyclerViewAdapter.DataViewHolder) holder).userNameTextView.setText(userData.getName());
+                ((DataViewHolder) holder).userNameTextView.setText(userData.getName());
 
-                CheckIsFollowingUser.checkIsFollowingUser(executor, new Handler(), redditDataRoomDatabase,
-                        userData.getName(), accountName, new CheckIsFollowingUser.CheckIsFollowingUserListener() {
-                            @Override
-                            public void isSubscribed() {
-                                ((UserListingRecyclerViewAdapter.DataViewHolder) holder).subscribeButton.setVisibility(View.GONE);
-                            }
+                if (!isMultiSelection) {
+                    CheckIsFollowingUser.checkIsFollowingUser(executor, new Handler(), redditDataRoomDatabase,
+                            userData.getName(), accountName, new CheckIsFollowingUser.CheckIsFollowingUserListener() {
+                                @Override
+                                public void isSubscribed() {
+                                    ((DataViewHolder) holder).subscribeButton.setVisibility(View.GONE);
+                                }
 
-                            @Override
-                            public void isNotSubscribed() {
-                                ((UserListingRecyclerViewAdapter.DataViewHolder) holder).subscribeButton.setVisibility(View.VISIBLE);
-                                ((UserListingRecyclerViewAdapter.DataViewHolder) holder).subscribeButton.setOnClickListener(view -> {
-                                    UserFollowing.followUser(oauthRetrofit, retrofit,
-                                            accessToken, userData.getName(), accountName, redditDataRoomDatabase,
-                                            new UserFollowing.UserFollowingListener() {
-                                                @Override
-                                                public void onUserFollowingSuccess() {
-                                                    ((UserListingRecyclerViewAdapter.DataViewHolder) holder).subscribeButton.setVisibility(View.GONE);
-                                                    Toast.makeText(context, R.string.followed, Toast.LENGTH_SHORT).show();
-                                                }
+                                @Override
+                                public void isNotSubscribed() {
+                                    ((DataViewHolder) holder).subscribeButton.setVisibility(View.VISIBLE);
+                                    ((DataViewHolder) holder).subscribeButton.setOnClickListener(view -> {
+                                        UserFollowing.followUser(oauthRetrofit, retrofit,
+                                                accessToken, userData.getName(), accountName, redditDataRoomDatabase,
+                                                new UserFollowing.UserFollowingListener() {
+                                                    @Override
+                                                    public void onUserFollowingSuccess() {
+                                                        ((DataViewHolder) holder).subscribeButton.setVisibility(View.GONE);
+                                                        Toast.makeText(context, R.string.followed, Toast.LENGTH_SHORT).show();
+                                                    }
 
-                                                @Override
-                                                public void onUserFollowingFail() {
-                                                    Toast.makeText(context, R.string.follow_failed, Toast.LENGTH_SHORT).show();
-                                                }
-                                            });
-                                });
-                            }
-                        });
+                                                    @Override
+                                                    public void onUserFollowingFail() {
+                                                        Toast.makeText(context, R.string.follow_failed, Toast.LENGTH_SHORT).show();
+                                                    }
+                                                });
+                                    });
+                                }
+                            });
+                } else {
+                    ((DataViewHolder) holder).checkBox.setOnCheckedChangeListener((compoundButton, b) -> userData.setSelected(b));
+                }
             }
         }
     }
@@ -206,9 +217,9 @@ public class UserListingRecyclerViewAdapter extends PagedListAdapter<UserData, R
 
     @Override
     public void onViewRecycled(@NonNull RecyclerView.ViewHolder holder) {
-        if (holder instanceof UserListingRecyclerViewAdapter.DataViewHolder) {
-            glide.clear(((UserListingRecyclerViewAdapter.DataViewHolder) holder).iconGifImageView);
-            ((UserListingRecyclerViewAdapter.DataViewHolder) holder).subscribeButton.setVisibility(View.GONE);
+        if (holder instanceof DataViewHolder) {
+            glide.clear(((DataViewHolder) holder).iconGifImageView);
+            ((DataViewHolder) holder).subscribeButton.setVisibility(View.GONE);
         }
     }
 
@@ -227,12 +238,17 @@ public class UserListingRecyclerViewAdapter extends PagedListAdapter<UserData, R
         TextView userNameTextView;
         @BindView(R.id.subscribe_image_view_item_user_listing)
         ImageView subscribeButton;
+        @BindView(R.id.checkbox__item_user_listing)
+        MaterialCheckBox checkBox;
 
         DataViewHolder(View itemView) {
             super(itemView);
             ButterKnife.bind(this, itemView);
             userNameTextView.setTextColor(primaryTextColor);
             subscribeButton.setColorFilter(unsubscribedColor, android.graphics.PorterDuff.Mode.SRC_IN);
+            if (isMultiSelection) {
+                checkBox.setVisibility(View.VISIBLE);
+            }
         }
     }
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/SubredditListingFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/SubredditListingFragment.java
index 5d42a1d8..0f26b06e 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/SubredditListingFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/SubredditListingFragment.java
@@ -260,17 +260,17 @@ public class SubredditListingFragment extends Fragment implements FragmentCommun
         return sortType;
     }
 
-    public List<SubredditData> getSelectedSubreddits() {
+    public ArrayList<String> getSelectedSubredditNames() {
         if (mSubredditListingViewModel != null) {
             List<SubredditData> allSubreddits = mSubredditListingViewModel.getSubreddits().getValue();
             if (allSubreddits == null) {
                 return null;
             }
 
-            List<SubredditData> selectedSubreddits = new ArrayList<>();
+            ArrayList<String> selectedSubreddits = new ArrayList<>();
             for (SubredditData s : allSubreddits) {
                 if (s.isSelected()) {
-                    selectedSubreddits.add(s);
+                    selectedSubreddits.add(s.getName());
                 }
             }
             return selectedSubreddits;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/UserListingFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/UserListingFragment.java
index b1c09395..603a4b8c 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/UserListingFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/UserListingFragment.java
@@ -25,6 +25,8 @@ import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 
 import com.bumptech.glide.Glide;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.concurrent.Executor;
 
 import javax.inject.Inject;
@@ -35,8 +37,8 @@ import butterknife.ButterKnife;
 import ml.docilealligator.infinityforreddit.FragmentCommunicator;
 import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.NetworkState;
-import ml.docilealligator.infinityforreddit.RecyclerViewContentScrollingInterface;
 import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.RecyclerViewContentScrollingInterface;
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
 import ml.docilealligator.infinityforreddit.SortType;
 import ml.docilealligator.infinityforreddit.activities.BaseActivity;
@@ -44,6 +46,7 @@ import ml.docilealligator.infinityforreddit.activities.SearchUsersResultActivity
 import ml.docilealligator.infinityforreddit.activities.ViewUserDetailActivity;
 import ml.docilealligator.infinityforreddit.adapters.UserListingRecyclerViewAdapter;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.user.UserData;
 import ml.docilealligator.infinityforreddit.user.UserListingViewModel;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 import retrofit2.Retrofit;
@@ -56,6 +59,7 @@ public class UserListingFragment extends Fragment implements FragmentCommunicato
 
     public static final String EXTRA_QUERY = "EQ";
     public static final String EXTRA_IS_GETTING_USER_INFO = "EIGUI";
+    public static final String EXTRA_IS_MULTI_SELECTION = "EIMS";
     public static final String EXTRA_ACCESS_TOKEN = "EAT";
     public static final String EXTRA_ACCOUNT_NAME = "EAN";
 
@@ -141,6 +145,7 @@ public class UserListingFragment extends Fragment implements FragmentCommunicato
 
         mAdapter = new UserListingRecyclerViewAdapter(getActivity(), mExecutor, mOauthRetrofit, mRetrofit,
                 mCustomThemeWrapper, accessToken, accountName, mRedditDataRoomDatabase,
+                getArguments().getBoolean(EXTRA_IS_MULTI_SELECTION, false),
                 new UserListingRecyclerViewAdapter.Callback() {
                     @Override
                     public void retryLoadingMore() {
@@ -256,4 +261,22 @@ public class UserListingFragment extends Fragment implements FragmentCommunicato
     public SortType getSortType() {
         return sortType;
     }
+
+    public ArrayList<String> getSelectedUsernames() {
+        if (mUserListingViewModel != null) {
+            List<UserData> allUsers = mUserListingViewModel.getUsers().getValue();
+            if (allUsers != null) {
+                ArrayList<String> selectedUsernames = new ArrayList<>();
+                for (UserData u : allUsers) {
+                    if (u.isSelected()) {
+                        selectedUsernames.add(u.getName());
+                    }
+                }
+                return selectedUsernames;
+            } else {
+                return null;
+            }
+        }
+        return null;
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/user/UserData.java b/app/src/main/java/ml/docilealligator/infinityforreddit/user/UserData.java
index 69b93740..06be82f1 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/user/UserData.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/user/UserData.java
@@ -3,6 +3,7 @@ package ml.docilealligator.infinityforreddit.user;
 import androidx.annotation.NonNull;
 import androidx.room.ColumnInfo;
 import androidx.room.Entity;
+import androidx.room.Ignore;
 import androidx.room.PrimaryKey;
 
 @Entity(tableName = "users")
@@ -37,6 +38,8 @@ public class UserData {
     private boolean isNSFW;
     @ColumnInfo(name = "description")
     private String description;
+    @Ignore
+    private boolean isSelected;
 
     public UserData(@NonNull String name, String iconUrl, String banner, int linkKarma, int commentKarma,
                     int awarderKarma, int awardeeKarma, int totalKarma, long cakeday, boolean isGold,
@@ -55,6 +58,7 @@ public class UserData {
         this.canBeFollowed = canBeFollowed;
         this.isNSFW = isNSFW;
         this.description = description;
+        this.isSelected = false;
     }
 
     @NonNull
@@ -113,4 +117,12 @@ public class UserData {
     public String getDescription() {
         return description;
     }
+
+    public boolean isSelected() {
+        return isSelected;
+    }
+
+    public void setSelected(boolean selected) {
+        isSelected = selected;
+    }
 }
diff --git a/app/src/main/res/layout/item_subreddit_listing.xml b/app/src/main/res/layout/item_subreddit_listing.xml
index a308e347..bae636fe 100644
--- a/app/src/main/res/layout/item_subreddit_listing.xml
+++ b/app/src/main/res/layout/item_subreddit_listing.xml
@@ -50,6 +50,7 @@
         android:layout_height="wrap_content"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintBottom_toBottomOf="parent" />
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:visibility="gone" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/item_user_listing.xml b/app/src/main/res/layout/item_user_listing.xml
index 5178c5be..ce0831d0 100644
--- a/app/src/main/res/layout/item_user_listing.xml
+++ b/app/src/main/res/layout/item_user_listing.xml
@@ -44,4 +44,13 @@
         android:background="?attr/selectableItemBackground"
         android:visibility="gone" />
 
+    <com.google.android.material.checkbox.MaterialCheckBox
+        android:id="@+id/checkbox__item_user_listing"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:visibility="gone" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/menu/search_users_result_activity.xml b/app/src/main/res/menu/search_users_result_activity.xml
new file mode 100644
index 00000000..fa0b678c
--- /dev/null
+++ b/app/src/main/res/menu/search_users_result_activity.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/action_save_search_users_result_activity"
+        android:orderInCategory="1"
+        android:title="@string/action_save"
+        android:icon="@drawable/ic_check_circle_toolbar_24dp"
+        app:showAsAction="ifRoom" />
+</menu>
\ No newline at end of file
-- 
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