Sorting in SearchResultActivity is available. Switch DataSource instead of replacing fragments when changing sorting types. Minor bugs fixed.

21 files changed, 371 insertions, 101 deletions

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubredditData.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubredditData.java
index b7c5a73e..9b96e087 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubredditData.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubredditData.java
@@ -2,10 +2,11 @@ package ml.docilealligator.infinityforreddit;
 
 import android.util.Log;
 
+import androidx.annotation.NonNull;
+
 import java.util.ArrayList;
 
 import SubredditDatabase.SubredditData;
-import androidx.annotation.NonNull;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
@@ -56,10 +57,10 @@ class FetchSubredditData {
         });
     }
 
-    static void fetchSubredditListingData(Retrofit retrofit, String query, String after, final FetchSubredditListingDataListener fetchSubredditListingDataListener) {
+    static void fetchSubredditListingData(Retrofit retrofit, String query, String after, String sortType, final FetchSubredditListingDataListener fetchSubredditListingDataListener) {
         RedditAPI api = retrofit.create(RedditAPI.class);
 
-        Call<String> subredditDataCall = api.searchSubreddits(query, after);
+        Call<String> subredditDataCall = api.searchSubreddits(query, after, sortType);
         subredditDataCall.enqueue(new Callback<String>() {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchUserData.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchUserData.java
index 7f2e2528..8eadcd89 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchUserData.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchUserData.java
@@ -2,10 +2,11 @@ package ml.docilealligator.infinityforreddit;
 
 import android.util.Log;
 
+import androidx.annotation.NonNull;
+
 import java.util.ArrayList;
 
 import User.UserData;
-import androidx.annotation.NonNull;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Retrofit;
@@ -55,11 +56,11 @@ public class FetchUserData {
         });
     }
 
-    public static void fetchUserListingData(Retrofit retrofit, String query, String after,
+    public static void fetchUserListingData(Retrofit retrofit, String query, String after, String sortType,
                                             FetchUserListingDataListener fetchUserListingDataListener) {
         RedditAPI api = retrofit.create(RedditAPI.class);
 
-        Call<String> userInfo = api.searchUsers(query, after);
+        Call<String> userInfo = api.searchUsers(query, after, sortType);
         userInfo.enqueue(new Callback<String>() {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
index 08dba87e..f32613f4 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
@@ -114,7 +114,12 @@ public class MainActivity extends AppCompatActivity implements SortTypeBottomShe
             startActivityForResult(loginIntent, LOGIN_ACTIVITY_REQUEST_CODE);
         } else {
             if (savedInstanceState == null) {
-                replaceFragment(PostDataSource.SORT_TYPE_BEST);
+                mFragment = new PostFragment();
+                Bundle bundle = new Bundle();
+                bundle.putInt(PostFragment.EXTRA_POST_TYPE, PostDataSource.TYPE_FRONT_PAGE);
+                bundle.putString(PostFragment.EXTRA_SORT_TYPE, PostDataSource.SORT_TYPE_BEST);
+                mFragment.setArguments(bundle);
+                getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_content_main, mFragment).commit();
             } else {
                 mFragment = getSupportFragmentManager().getFragment(savedInstanceState, FRAGMENT_OUT_STATE);
                 getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_content_main, mFragment).commit();
@@ -176,15 +181,6 @@ public class MainActivity extends AppCompatActivity implements SortTypeBottomShe
         fab.setOnClickListener(view -> postTypeBottomSheetFragment.show(getSupportFragmentManager(), postTypeBottomSheetFragment.getTag()));
     }
 
-    private void replaceFragment(String sortType) {
-        mFragment = new PostFragment();
-        Bundle bundle = new Bundle();
-        bundle.putInt(PostFragment.EXTRA_POST_TYPE, PostDataSource.TYPE_FRONT_PAGE);
-        bundle.putString(PostFragment.EXTRA_SORT_TYPE, sortType);
-        mFragment.setArguments(bundle);
-        getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_content_main, mFragment).commit();
-    }
-
     private void loadUserData() {
         if (!mFetchUserInfoSuccess) {
             FetchMyInfo.fetchMyInfo(mOauthRetrofit, mAuthInfoSharedPreferences, new FetchMyInfo.FetchUserMyListener() {
@@ -330,7 +326,7 @@ public class MainActivity extends AppCompatActivity implements SortTypeBottomShe
 
     @Override
     public void sortTypeSelected(String sortType) {
-        replaceFragment(sortType);
+        ((PostFragment) mFragment).changeSortType(sortType);
     }
 
     @Override
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java
index 2a96524e..b596fc75 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java
@@ -31,6 +31,8 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
     static final String SORT_TYPE_RISING = "rising";
     static final String SORT_TYPE_TOP = "top";
     static final String SORT_TYPE_CONTROVERSIAL = "controversial";
+    static final String SORT_TYPE_RELEVANCE = "relevance";
+    static final String SORT_TYPE_COMMENTS = "comments";
 
     private Retrofit retrofit;
     private String accessToken;
@@ -459,7 +461,7 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
         Call<String> getPost;
 
         if(subredditName == null) {
-            getPost = api.searchPosts(query, null, RedditUtils.getOAuthHeader(accessToken));
+            getPost = api.searchPosts(query, null, sortType, RedditUtils.getOAuthHeader(accessToken));
         } else {
             getPost = api.searchPostsInSpecificSubreddit(subredditName, query, null, RedditUtils.getOAuthHeader(accessToken));
         }
@@ -467,6 +469,7 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
         getPost.enqueue(new Callback<String>() {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
+                Log.i("initial", call.request().url().toString());
                 if(response.isSuccessful()) {
                     ParsePost.parsePosts(response.body(), locale, -1,
                             new ParsePost.ParsePostsListingListener() {
@@ -507,7 +510,7 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
         Call<String> getPost;
 
         if(subredditName == null) {
-            getPost = api.searchPosts(subredditName, params.key, RedditUtils.getOAuthHeader(accessToken));
+            getPost = api.searchPosts(query, params.key, sortType, RedditUtils.getOAuthHeader(accessToken));
         } else {
             getPost = api.searchPostsInSpecificSubreddit(subredditName, query, params.key, RedditUtils.getOAuthHeader(accessToken));
         }
@@ -515,6 +518,7 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
         getPost.enqueue(new Callback<String>() {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
+                Log.i("after", call.request().url().toString());
                 if(response.isSuccessful()) {
                     ParsePost.parsePosts(response.body(), locale, -1, new ParsePost.ParsePostsListingListener() {
                         @Override
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSourceFactory.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSourceFactory.java
index 31e91c54..79a533e0 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSourceFactory.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSourceFactory.java
@@ -90,4 +90,8 @@ class PostDataSourceFactory extends DataSource.Factory {
     PostDataSource getPostDataSource() {
         return postDataSource;
     }
+
+    void changeSortType(String sortType) {
+        this.sortType = sortType;
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
index 7196e640..f78d00b6 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
@@ -287,6 +287,10 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         return rootView;
     }
 
+    void changeSortType(String sortType) {
+        mPostViewModel.changeSortType(sortType);
+    }
+
     @Override
     public void onAttach(@NonNull Context context) {
         super.onAttach(context);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostViewModel.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostViewModel.java
index 3c5548f8..c824567f 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostViewModel.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostViewModel.java
@@ -3,6 +3,7 @@ package ml.docilealligator.infinityforreddit;
 import androidx.annotation.NonNull;
 import androidx.arch.core.util.Function;
 import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.Transformations;
 import androidx.lifecycle.ViewModel;
 import androidx.lifecycle.ViewModelProvider;
@@ -18,6 +19,7 @@ public class PostViewModel extends ViewModel {
     private LiveData<NetworkState> paginationNetworkState;
     private LiveData<NetworkState> initialLoadingState;
     private LiveData<PagedList<Post>> posts;
+    private MutableLiveData<String> sortTypeLiveData;
 
     public PostViewModel(Retrofit retrofit, String accessToken, Locale locale, int postType, String sortType,
                          PostDataSource.OnPostFetchedCallback onPostFetchedCallback) {
@@ -27,13 +29,20 @@ public class PostViewModel extends ViewModel {
                 (Function<PostDataSource, LiveData<NetworkState>>) PostDataSource::getInitialLoadStateLiveData);
         paginationNetworkState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
                 (Function<PostDataSource, LiveData<NetworkState>>) PostDataSource::getPaginationNetworkStateLiveData);
+
+        sortTypeLiveData = new MutableLiveData<>();
+        sortTypeLiveData.postValue(sortType);
+
         PagedList.Config pagedListConfig =
                 (new PagedList.Config.Builder())
                         .setEnablePlaceholders(false)
                         .setPageSize(25)
                         .build();
 
-        posts = (new LivePagedListBuilder(postDataSourceFactory, pagedListConfig)).build();
+        posts = Transformations.switchMap(sortTypeLiveData, sort -> {
+            postDataSourceFactory.changeSortType(sortTypeLiveData.getValue());
+            return (new LivePagedListBuilder(postDataSourceFactory, pagedListConfig)).build();
+        });
     }
 
     public PostViewModel(Retrofit retrofit, String accessToken, Locale locale, String subredditName, int postType,
@@ -41,9 +50,12 @@ public class PostViewModel extends ViewModel {
         postDataSourceFactory = new PostDataSourceFactory(retrofit, accessToken, locale, subredditName, postType, sortType, onPostFetchedCallback);
 
         initialLoadingState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
-                dataSource -> dataSource.getInitialLoadStateLiveData());
+                (Function<PostDataSource, LiveData<NetworkState>>) PostDataSource::getInitialLoadStateLiveData);
         paginationNetworkState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
-                dataSource -> dataSource.getPaginationNetworkStateLiveData());
+                (Function<PostDataSource, LiveData<NetworkState>>) PostDataSource::getPaginationNetworkStateLiveData);
+
+        sortTypeLiveData = new MutableLiveData<>();
+        sortTypeLiveData.postValue(sortType);
 
         PagedList.Config pagedListConfig =
                 (new PagedList.Config.Builder())
@@ -51,7 +63,10 @@ public class PostViewModel extends ViewModel {
                         .setPageSize(25)
                         .build();
 
-        posts = (new LivePagedListBuilder(postDataSourceFactory, pagedListConfig)).build();
+        posts = Transformations.switchMap(sortTypeLiveData, sort -> {
+            postDataSourceFactory.changeSortType(sortTypeLiveData.getValue());
+            return (new LivePagedListBuilder(postDataSourceFactory, pagedListConfig)).build();
+        });
     }
 
     public PostViewModel(Retrofit retrofit, String accessToken, Locale locale, String subredditName, int postType,
@@ -61,7 +76,7 @@ public class PostViewModel extends ViewModel {
         initialLoadingState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
                 dataSource -> dataSource.getInitialLoadStateLiveData());
         paginationNetworkState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
-                dataSource -> dataSource.getPaginationNetworkStateLiveData());
+                (Function<PostDataSource, LiveData<NetworkState>>) PostDataSource::getPaginationNetworkStateLiveData);
 
         PagedList.Config pagedListConfig =
                 (new PagedList.Config.Builder())
@@ -82,13 +97,19 @@ public class PostViewModel extends ViewModel {
         paginationNetworkState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
                 dataSource -> dataSource.getPaginationNetworkStateLiveData());
 
+        sortTypeLiveData = new MutableLiveData<>();
+        sortTypeLiveData.postValue(sortType);
+
         PagedList.Config pagedListConfig =
                 (new PagedList.Config.Builder())
                         .setEnablePlaceholders(false)
                         .setPageSize(25)
                         .build();
 
-        posts = (new LivePagedListBuilder(postDataSourceFactory, pagedListConfig)).build();
+        posts = Transformations.switchMap(sortTypeLiveData, sort -> {
+            postDataSourceFactory.changeSortType(sortTypeLiveData.getValue());
+            return (new LivePagedListBuilder(postDataSourceFactory, pagedListConfig)).build();
+        });
     }
 
     LiveData<PagedList<Post>> getPosts() {
@@ -115,6 +136,10 @@ public class PostViewModel extends ViewModel {
         postDataSourceFactory.getPostDataSource().retryLoadingMore();
     }
 
+    void changeSortType(String sortType) {
+        sortTypeLiveData.postValue(sortType);
+    }
+
     public static class Factory extends ViewModelProvider.NewInstanceFactory {
         private Retrofit retrofit;
         private String accessToken;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/RedditAPI.java b/app/src/main/java/ml/docilealligator/infinityforreddit/RedditAPI.java
index 0aba1d50..f0a9ac5b 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/RedditAPI.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/RedditAPI.java
@@ -66,13 +66,13 @@ public interface RedditAPI {
     Call<String> getInfo(@Path("subredditNamePrefixed") String subredditNamePrefixed, @Query("id") String id);
 
     @GET("subreddits/search.json?raw_json=1&include_over_18=on")
-    Call<String> searchSubreddits(@Query("q") String subredditName, @Query("after") String after);
+    Call<String> searchSubreddits(@Query("q") String subredditName, @Query("after") String after, @Query("sort") String sort);
 
     @GET("search.json?raw_json=1&type=user&include_over_18=on")
-    Call<String> searchUsers(@Query("q") String profileName, @Query("after") String after);
+    Call<String> searchUsers(@Query("q") String profileName, @Query("after") String after, @Query("sort") String sort);
 
     @GET("search.json?raw_json=1&type=link&include_over_18=on")
-    Call<String> searchPosts(@Query("q") String query, @Query("after") String after,
+    Call<String> searchPosts(@Query("q") String query, @Query("after") String after, @Query("sort") String sort,
                              @HeaderMap Map<String, String> headers);
 
     @GET("r/{subredditName}/search.json?raw_json=1&type=link&restrict_sr=true&include_over_18=on")
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SearchPostSortTypeBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SearchPostSortTypeBottomSheetFragment.java
new file mode 100644
index 00000000..1bc862cc
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SearchPostSortTypeBottomSheetFragment.java
@@ -0,0 +1,77 @@
+package ml.docilealligator.infinityforreddit;
+
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.fragment.app.Fragment;
+
+import com.deishelon.roundedbottomsheet.RoundedBottomSheetDialogFragment;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+
+
+/**
+ * A simple {@link Fragment} subclass.
+ */
+public class SearchPostSortTypeBottomSheetFragment extends RoundedBottomSheetDialogFragment {
+
+    interface SearchSortTypeSelectionCallback {
+        void searchSortTypeSelected(String sortType);
+    }
+
+    static final String EXTRA_FRAGMENT_POSITION = "EFP";
+
+    @BindView(R.id.relevance_type_text_view_search_sort_type_bottom_sheet_fragment) TextView relevanceTypeTextView;
+    @BindView(R.id.hot_type_text_view_search_sort_type_bottom_sheet_fragment) TextView hotTypeTextView;
+    @BindView(R.id.top_type_text_view_search_sort_type_bottom_sheet_fragment) TextView topTypeTextView;
+    @BindView(R.id.new_type_text_view_search_sort_type_bottom_sheet_fragment) TextView newTypeTextView;
+    @BindView(R.id.comments_type_text_view_search_sort_type_bottom_sheet_fragment) TextView commentsTypeTextView;
+
+    public SearchPostSortTypeBottomSheetFragment() {
+        // Required empty public constructor
+    }
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.fragment_search_post_sort_type_bottom_sheet, container, false);
+        ButterKnife.bind(this, rootView);
+
+        Activity activity = getActivity();
+
+        relevanceTypeTextView.setOnClickListener(view -> {
+            ((SearchSortTypeSelectionCallback) activity).searchSortTypeSelected(PostDataSource.SORT_TYPE_RELEVANCE);
+            dismiss();
+        });
+
+        hotTypeTextView.setOnClickListener(view -> {
+            ((SearchSortTypeSelectionCallback) activity).searchSortTypeSelected(PostDataSource.SORT_TYPE_HOT);
+            dismiss();
+        });
+
+        topTypeTextView.setOnClickListener(view -> {
+            ((SearchSortTypeSelectionCallback) activity).searchSortTypeSelected(PostDataSource.SORT_TYPE_TOP);
+            dismiss();
+        });
+
+        newTypeTextView.setOnClickListener(view -> {
+            ((SearchSortTypeSelectionCallback) activity).searchSortTypeSelected(PostDataSource.SORT_TYPE_NEW);
+            dismiss();
+        });
+
+        commentsTypeTextView.setOnClickListener(view -> {
+            ((SearchSortTypeSelectionCallback) activity).searchSortTypeSelected(PostDataSource.SORT_TYPE_COMMENTS);
+            dismiss();
+        });
+
+        return rootView;
+    }
+
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SearchResultActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SearchResultActivity.java
index b8f304bd..a63f1de2 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SearchResultActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SearchResultActivity.java
@@ -19,7 +19,8 @@ import com.google.android.material.tabs.TabLayout;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 
-public class SearchResultActivity extends AppCompatActivity {
+public class SearchResultActivity extends AppCompatActivity implements SearchPostSortTypeBottomSheetFragment.SearchSortTypeSelectionCallback,
+        SearchUserAndSubredditSortTypeBottomSheetFragment.SearchUserAndSubredditSortTypeSelectionCallback {
     static final String EXTRA_QUERY = "QK";
     static final String EXTRA_SUBREDDIT_NAME = "ESN";
 
@@ -32,6 +33,9 @@ public class SearchResultActivity extends AppCompatActivity {
 
     private SectionsPagerAdapter sectionsPagerAdapter;
 
+    private SearchPostSortTypeBottomSheetFragment searchPostSortTypeBottomSheetFragment;
+    private SearchUserAndSubredditSortTypeBottomSheetFragment searchUserAndSubredditSortTypeBottomSheetFragment;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -45,8 +49,16 @@ public class SearchResultActivity extends AppCompatActivity {
         sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
         viewPager.setAdapter(sectionsPagerAdapter);
         viewPager.setOffscreenPageLimit(2);
+
         tabLayout.setupWithViewPager(viewPager);
 
+        searchPostSortTypeBottomSheetFragment = new SearchPostSortTypeBottomSheetFragment();
+        Bundle bundle = new Bundle();
+        bundle.putInt(SearchPostSortTypeBottomSheetFragment.EXTRA_FRAGMENT_POSITION, viewPager.getCurrentItem());
+        searchPostSortTypeBottomSheetFragment.setArguments(bundle);
+
+        searchUserAndSubredditSortTypeBottomSheetFragment = new SearchUserAndSubredditSortTypeBottomSheetFragment();
+
         // Get the intent, verify the action and get the query
         Intent intent = getIntent();
         String query = intent.getExtras().getString(EXTRA_QUERY);
@@ -73,6 +85,21 @@ public class SearchResultActivity extends AppCompatActivity {
             case android.R.id.home:
                 onBackPressed();
                 return true;
+            case R.id.action_sort_search_result_activity:
+                switch (viewPager.getCurrentItem()) {
+                    case 0: {
+                        searchPostSortTypeBottomSheetFragment.show(getSupportFragmentManager(), searchPostSortTypeBottomSheetFragment.getTag());
+                        break;
+                    }
+                    case 1:
+                    case 2:
+                        Bundle bundle = new Bundle();
+                        bundle.putInt(SearchUserAndSubredditSortTypeBottomSheetFragment.EXTRA_FRAGMENT_POSITION, viewPager.getCurrentItem());
+                        searchUserAndSubredditSortTypeBottomSheetFragment.setArguments(bundle);
+                        searchUserAndSubredditSortTypeBottomSheetFragment.show(getSupportFragmentManager(), searchUserAndSubredditSortTypeBottomSheetFragment.getTag());
+                        break;
+                }
+                return true;
             case R.id.action_search_search_result_activity:
                 Intent intent = new Intent(this, SearchActivity.class);
                 finish();
@@ -85,7 +112,18 @@ public class SearchResultActivity extends AppCompatActivity {
         return super.onOptionsItemSelected(item);
     }
 
+    @Override
+    public void searchSortTypeSelected(String sortType) {
+        sectionsPagerAdapter.changeSortType(sortType, 0);
+    }
+
+    @Override
+    public void searchUserAndSubredditSortTypeSelected(String sortType, int fragmentPosition) {
+        sectionsPagerAdapter.changeSortType(sortType, fragmentPosition);
+    }
+
     private class SectionsPagerAdapter extends FragmentPagerAdapter {
+
         private PostFragment postFragment;
         private SubredditListingFragment subredditListingFragment;
         private UserListingFragment userListingFragment;
@@ -102,7 +140,7 @@ public class SearchResultActivity extends AppCompatActivity {
                     PostFragment mFragment = new PostFragment();
                     Bundle bundle = new Bundle();
                     bundle.putInt(PostFragment.EXTRA_POST_TYPE, PostDataSource.TYPE_SEARCH);
-                    bundle.putString(PostFragment.EXTRA_SORT_TYPE, PostDataSource.SORT_TYPE_BEST);
+                    bundle.putString(PostFragment.EXTRA_SORT_TYPE, PostDataSource.SORT_TYPE_RELEVANCE);
                     bundle.putString(PostFragment.EXTRA_SUBREDDIT_NAME, mSubredditName);
                     bundle.putString(PostFragment.EXTRA_QUERY, mQuery);
                     mFragment.setArguments(bundle);
@@ -115,8 +153,7 @@ public class SearchResultActivity extends AppCompatActivity {
                     mFragment.setArguments(bundle);
                     return mFragment;
                 }
-                default:
-                {
+                default: {
                     UserListingFragment mFragment = new UserListingFragment();
                     Bundle bundle = new Bundle();
                     bundle.putString(UserListingFragment.QUERY_KEY, mQuery);
@@ -162,6 +199,19 @@ public class SearchResultActivity extends AppCompatActivity {
             return fragment;
         }
 
+        void changeSortType(String sortType, int fragmentPosition) {
+            switch (fragmentPosition) {
+                case 0:
+                    postFragment.changeSortType(sortType);
+                    break;
+                case 1:
+                    subredditListingFragment.changeSortType(sortType);
+                    break;
+                case 2:
+                    userListingFragment.changeSortType(sortType);
+            }
+        }
+
         public void refresh() {
             if(postFragment != null) {
                 ((FragmentCommunicator) postFragment).refresh();
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SearchUserAndSubredditSortTypeBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SearchUserAndSubredditSortTypeBottomSheetFragment.java
new file mode 100644
index 00000000..ae652fd4
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SearchUserAndSubredditSortTypeBottomSheetFragment.java
@@ -0,0 +1,61 @@
+package ml.docilealligator.infinityforreddit;
+
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.fragment.app.Fragment;
+
+import com.deishelon.roundedbottomsheet.RoundedBottomSheetDialogFragment;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+
+
+/**
+ * A simple {@link Fragment} subclass.
+ */
+public class SearchUserAndSubredditSortTypeBottomSheetFragment extends RoundedBottomSheetDialogFragment {
+
+    interface SearchUserAndSubredditSortTypeSelectionCallback {
+        void searchUserAndSubredditSortTypeSelected(String sortType, int fragmentPosition);
+    }
+
+    static final String EXTRA_FRAGMENT_POSITION = "EFP";
+
+    @BindView(R.id.relevance_type_text_view_search_user_and_subreddit_sort_type_bottom_sheet_fragment) TextView relevanceTypeTextView;
+    @BindView(R.id.activity_type_text_view_search_user_and_subreddit_sort_type_bottom_sheet_fragment) TextView activityTypeTextView;
+
+    public SearchUserAndSubredditSortTypeBottomSheetFragment() {
+        // Required empty public constructor
+    }
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.fragment_search_user_and_subreddit_sort_type_bottom_sheet, container, false);
+        ButterKnife.bind(this, rootView);
+
+        Activity activity = getActivity();
+
+        int position = getArguments().getInt(EXTRA_FRAGMENT_POSITION);
+
+        relevanceTypeTextView.setOnClickListener(view -> {
+            ((SearchUserAndSubredditSortTypeSelectionCallback) activity).searchUserAndSubredditSortTypeSelected(PostDataSource.SORT_TYPE_RELEVANCE, position);
+            dismiss();
+        });
+
+        activityTypeTextView.setOnClickListener(view -> {
+            ((SearchUserAndSubredditSortTypeSelectionCallback) activity).searchUserAndSubredditSortTypeSelected(PostDataSource.SORT_TYPE_HOT, position);
+            dismiss();
+        });
+
+        return rootView;
+    }
+
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SortTypeBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SortTypeBottomSheetFragment.java
index 8e25c271..16fbb961 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SortTypeBottomSheetFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SortTypeBottomSheetFragment.java
@@ -78,7 +78,7 @@ public class SortTypeBottomSheetFragment extends RoundedBottomSheetDialogFragmen
         });
 
         controversialTypeTextView.setOnClickListener(view -> {
-            ((SortTypeSelectionCallback) activity).sortTypeSelected(PostDataSource.SORT_TYPE_BEST);
+            ((SortTypeSelectionCallback) activity).sortTypeSelected(PostDataSource.SORT_TYPE_CONTROVERSIAL);
             dismiss();
         });
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingDataSource.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingDataSource.java
index 80e024d6..261c390b 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingDataSource.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingDataSource.java
@@ -1,11 +1,12 @@
 package ml.docilealligator.infinityforreddit;
 
-import java.util.ArrayList;
-
-import SubredditDatabase.SubredditData;
 import androidx.annotation.NonNull;
 import androidx.lifecycle.MutableLiveData;
 import androidx.paging.PageKeyedDataSource;
+
+import java.util.ArrayList;
+
+import SubredditDatabase.SubredditData;
 import retrofit2.Retrofit;
 
 public class SubredditListingDataSource extends PageKeyedDataSource<String, SubredditData> {
@@ -15,6 +16,7 @@ public class SubredditListingDataSource extends PageKeyedDataSource<String, Subr
     }
     private Retrofit retrofit;
     private String query;
+    private String sortType;
     private OnSubredditListingDataFetchedCallback onSubredditListingDataFetchedCallback;
 
     private MutableLiveData<NetworkState> paginationNetworkStateLiveData;
@@ -25,10 +27,11 @@ public class SubredditListingDataSource extends PageKeyedDataSource<String, Subr
     private LoadParams<String> params;
     private LoadCallback<String, SubredditData> callback;
 
-    SubredditListingDataSource(Retrofit retrofit, String query,
+    SubredditListingDataSource(Retrofit retrofit, String query, String sortType,
                                OnSubredditListingDataFetchedCallback onSubredditListingDataFetchedCallback) {
         this.retrofit = retrofit;
         this.query = query;
+        this.sortType = sortType;
         this.onSubredditListingDataFetchedCallback = onSubredditListingDataFetchedCallback;
         paginationNetworkStateLiveData = new MutableLiveData();
         initialLoadStateLiveData = new MutableLiveData();
@@ -49,7 +52,7 @@ public class SubredditListingDataSource extends PageKeyedDataSource<String, Subr
 
         initialLoadStateLiveData.postValue(NetworkState.LOADING);
 
-        FetchSubredditData.fetchSubredditListingData(retrofit, query, null, new FetchSubredditData.FetchSubredditListingDataListener() {
+        FetchSubredditData.fetchSubredditListingData(retrofit, query, null, sortType, new FetchSubredditData.FetchSubredditListingDataListener() {
             @Override
             public void onFetchSubredditListingDataSuccess(ArrayList<SubredditData> subredditData, String after) {
                 if(subredditData.size() == 0) {
@@ -83,7 +86,7 @@ public class SubredditListingDataSource extends PageKeyedDataSource<String, Subr
             return;
         }
 
-        FetchSubredditData.fetchSubredditListingData(retrofit, query, params.key, new FetchSubredditData.FetchSubredditListingDataListener() {
+        FetchSubredditData.fetchSubredditListingData(retrofit, query, params.key, sortType, new FetchSubredditData.FetchSubredditListingDataListener() {
             @Override
             public void onFetchSubredditListingDataSuccess(ArrayList<SubredditData> subredditData, String after) {
                 callback.onResult(subredditData, after);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingDataSourceFactory.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingDataSourceFactory.java
index bc64c052..f31cff7a 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingDataSourceFactory.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingDataSourceFactory.java
@@ -8,15 +8,17 @@ import retrofit2.Retrofit;
 public class SubredditListingDataSourceFactory extends DataSource.Factory {
     private Retrofit retrofit;
     private String query;
+    private String sortType;
     private SubredditListingDataSource.OnSubredditListingDataFetchedCallback onSubredditListingDataFetchedCallback;
 
     private SubredditListingDataSource subredditListingDataSource;
     private MutableLiveData<SubredditListingDataSource> subredditListingDataSourceMutableLiveData;
 
-    SubredditListingDataSourceFactory(Retrofit retrofit, String query,
+    SubredditListingDataSourceFactory(Retrofit retrofit, String query, String sortType,
                                       SubredditListingDataSource.OnSubredditListingDataFetchedCallback onSubredditListingDataFetchedCallback) {
         this.retrofit = retrofit;
         this.query = query;
+        this.sortType = sortType;
         this.onSubredditListingDataFetchedCallback = onSubredditListingDataFetchedCallback;
         subredditListingDataSourceMutableLiveData = new MutableLiveData<>();
     }
@@ -25,7 +27,7 @@ public class SubredditListingDataSourceFactory extends DataSource.Factory {
     @Override
     public DataSource create() {
         subredditListingDataSource = new SubredditListingDataSource(retrofit,
-                query, onSubredditListingDataFetchedCallback);
+                query, sortType, onSubredditListingDataFetchedCallback);
         subredditListingDataSourceMutableLiveData.postValue(subredditListingDataSource);
         return subredditListingDataSource;
     }
@@ -37,4 +39,8 @@ public class SubredditListingDataSourceFactory extends DataSource.Factory {
     SubredditListingDataSource getSubredditListingDataSource() {
         return subredditListingDataSource;
     }
+
+    void changeSortType(String sortType) {
+        this.sortType = sortType;
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingFragment.java
index 1972be71..2168bddd 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingFragment.java
@@ -10,6 +10,12 @@ import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProviders;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
 import com.bumptech.glide.Glide;
 import com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar;
 
@@ -17,11 +23,6 @@ import javax.inject.Inject;
 import javax.inject.Named;
 
 import SubscribedSubredditDatabase.SubscribedSubredditRoomDatabase;
-import androidx.coordinatorlayout.widget.CoordinatorLayout;
-import androidx.fragment.app.Fragment;
-import androidx.lifecycle.ViewModelProviders;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import retrofit2.Retrofit;
@@ -79,7 +80,7 @@ public class SubredditListingFragment extends Fragment implements FragmentCommun
         mQuery = getArguments().getString(QUERY_KEY);
 
         SubredditListingViewModel.Factory factory = new SubredditListingViewModel.Factory(mRetrofit, mQuery,
-                new SubredditListingDataSource.OnSubredditListingDataFetchedCallback() {
+                PostDataSource.SORT_TYPE_RELEVANCE, new SubredditListingDataSource.OnSubredditListingDataFetchedCallback() {
             @Override
             public void hasSubreddit() {
                 mFetchSubredditListingInfoLinearLayout.setVisibility(View.GONE);
@@ -87,11 +88,8 @@ public class SubredditListingFragment extends Fragment implements FragmentCommun
 
             @Override
             public void noSubreddit() {
-                mFetchSubredditListingInfoLinearLayout.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View view) {
-                        //Do nothing
-                    }
+                mFetchSubredditListingInfoLinearLayout.setOnClickListener(view -> {
+                    //Do nothing
                 });
                 showErrorView(R.string.no_subreddits);
             }
@@ -135,6 +133,10 @@ public class SubredditListingFragment extends Fragment implements FragmentCommun
         }
     }
 
+    void changeSortType(String sortType) {
+        mSubredditListingViewModel.changeSortType(sortType);
+    }
+
     @Override
     public void refresh() {
         mSubredditListingViewModel.refresh();
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingViewModel.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingViewModel.java
index 1ebb2dc3..3c304b90 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingViewModel.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditListingViewModel.java
@@ -1,14 +1,16 @@
 package ml.docilealligator.infinityforreddit;
 
-import SubredditDatabase.SubredditData;
 import androidx.annotation.NonNull;
 import androidx.arch.core.util.Function;
 import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.Transformations;
 import androidx.lifecycle.ViewModel;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.paging.LivePagedListBuilder;
 import androidx.paging.PagedList;
+
+import SubredditDatabase.SubredditData;
 import retrofit2.Retrofit;
 
 public class SubredditListingViewModel extends ViewModel {
@@ -16,22 +18,30 @@ public class SubredditListingViewModel extends ViewModel {
     private LiveData<NetworkState> paginationNetworkState;
     private LiveData<NetworkState> initialLoadingState;
     private LiveData<PagedList<SubredditData>> subreddits;
+    private MutableLiveData<String> sortTypeLiveData;
 
-    SubredditListingViewModel(Retrofit retrofit, String query,
+    SubredditListingViewModel(Retrofit retrofit, String query, String sortType,
                               SubredditListingDataSource.OnSubredditListingDataFetchedCallback onSubredditListingDataFetchedCallback) {
-        subredditListingDataSourceFactory = new SubredditListingDataSourceFactory(retrofit, query, onSubredditListingDataFetchedCallback);
+        subredditListingDataSourceFactory = new SubredditListingDataSourceFactory(retrofit, query, sortType, onSubredditListingDataFetchedCallback);
 
         initialLoadingState = Transformations.switchMap(subredditListingDataSourceFactory.getSubredditListingDataSourceMutableLiveData(),
                 (Function<SubredditListingDataSource, LiveData<NetworkState>>) SubredditListingDataSource::getInitialLoadStateLiveData);
         paginationNetworkState = Transformations.switchMap(subredditListingDataSourceFactory.getSubredditListingDataSourceMutableLiveData(),
                 (Function<SubredditListingDataSource, LiveData<NetworkState>>) SubredditListingDataSource::getPaginationNetworkStateLiveData);
+
+        sortTypeLiveData = new MutableLiveData<>();
+        sortTypeLiveData.postValue(sortType);
+
         PagedList.Config pagedListConfig =
                 (new PagedList.Config.Builder())
                         .setEnablePlaceholders(false)
                         .setPageSize(25)
                         .build();
 
-        subreddits = (new LivePagedListBuilder(subredditListingDataSourceFactory, pagedListConfig)).build();
+        subreddits = Transformations.switchMap(sortTypeLiveData, sort -> {
+            subredditListingDataSourceFactory.changeSortType(sortTypeLiveData.getValue());
+            return new LivePagedListBuilder(subredditListingDataSourceFactory, pagedListConfig).build();
+        });
     }
 
     LiveData<PagedList<SubredditData>> getSubreddits() {
@@ -58,22 +68,28 @@ public class SubredditListingViewModel extends ViewModel {
         subredditListingDataSourceFactory.getSubredditListingDataSource().retryLoadingMore();
     }
 
+    void changeSortType(String sortType) {
+        sortTypeLiveData.postValue(sortType);
+    }
+
     public static class Factory extends ViewModelProvider.NewInstanceFactory {
         private Retrofit retrofit;
         private String query;
+        private String sortType;
         private SubredditListingDataSource.OnSubredditListingDataFetchedCallback onSubredditListingDataFetchedCallback;
 
-        public Factory(Retrofit retrofit, String query,
+        public Factory(Retrofit retrofit, String query, String sortType,
                        SubredditListingDataSource.OnSubredditListingDataFetchedCallback onSubredditListingDataFetchedCallback) {
             this.retrofit = retrofit;
             this.query = query;
+            this.sortType = sortType;
             this.onSubredditListingDataFetchedCallback = onSubredditListingDataFetchedCallback;
         }
 
         @NonNull
         @Override
         public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
-            return (T) new SubredditListingViewModel(retrofit, query, onSubredditListingDataFetchedCallback);
+            return (T) new SubredditListingViewModel(retrofit, query, sortType, onSubredditListingDataFetchedCallback);
         }
     }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingDataSource.java b/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingDataSource.java
index 9273c32b..e2873052 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingDataSource.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingDataSource.java
@@ -1,11 +1,12 @@
 package ml.docilealligator.infinityforreddit;
 
-import java.util.ArrayList;
-
-import User.UserData;
 import androidx.annotation.NonNull;
 import androidx.lifecycle.MutableLiveData;
 import androidx.paging.PageKeyedDataSource;
+
+import java.util.ArrayList;
+
+import User.UserData;
 import retrofit2.Retrofit;
 
 public class UserListingDataSource extends PageKeyedDataSource<String, UserData> {
@@ -13,8 +14,10 @@ public class UserListingDataSource extends PageKeyedDataSource<String, UserData>
         void hasUser();
         void noUser();
     }
+
     private Retrofit retrofit;
     private String query;
+    private String sortType;
     private UserListingDataSource.OnUserListingDataFetchedCallback onUserListingDataFetchedCallback;
 
     private MutableLiveData<NetworkState> paginationNetworkStateLiveData;
@@ -25,10 +28,11 @@ public class UserListingDataSource extends PageKeyedDataSource<String, UserData>
     private PageKeyedDataSource.LoadParams<String> params;
     private PageKeyedDataSource.LoadCallback<String, UserData> callback;
 
-    UserListingDataSource(Retrofit retrofit, String query,
+    UserListingDataSource(Retrofit retrofit, String query, String sortType,
                                UserListingDataSource.OnUserListingDataFetchedCallback onUserListingDataFetchedCallback) {
         this.retrofit = retrofit;
         this.query = query;
+        this.sortType = sortType;
         this.onUserListingDataFetchedCallback = onUserListingDataFetchedCallback;
         paginationNetworkStateLiveData = new MutableLiveData();
         initialLoadStateLiveData = new MutableLiveData();
@@ -49,7 +53,7 @@ public class UserListingDataSource extends PageKeyedDataSource<String, UserData>
 
         initialLoadStateLiveData.postValue(NetworkState.LOADING);
 
-        FetchUserData.fetchUserListingData(retrofit, query, null, new FetchUserData.FetchUserListingDataListener() {
+        FetchUserData.fetchUserListingData(retrofit, query, null, sortType, new FetchUserData.FetchUserListingDataListener() {
             @Override
             public void onFetchUserListingDataSuccess(ArrayList<UserData> UserData, String after) {
                 if(UserData.size() == 0) {
@@ -83,7 +87,7 @@ public class UserListingDataSource extends PageKeyedDataSource<String, UserData>
             return;
         }
 
-        FetchUserData.fetchUserListingData(retrofit, query, params.key, new FetchUserData.FetchUserListingDataListener() {
+        FetchUserData.fetchUserListingData(retrofit, query, params.key, sortType, new FetchUserData.FetchUserListingDataListener() {
             @Override
             public void onFetchUserListingDataSuccess(ArrayList<UserData> UserData, String after) {
                 callback.onResult(UserData, after);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingDataSourceFactory.java b/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingDataSourceFactory.java
index 99e1fcfb..c014687c 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingDataSourceFactory.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingDataSourceFactory.java
@@ -8,15 +8,17 @@ import retrofit2.Retrofit;
 public class UserListingDataSourceFactory extends DataSource.Factory {
     private Retrofit retrofit;
     private String query;
+    private String sortType;
     private UserListingDataSource.OnUserListingDataFetchedCallback onUserListingDataFetchedCallback;
 
     private UserListingDataSource userListingDataSource;
     private MutableLiveData<UserListingDataSource> userListingDataSourceMutableLiveData;
 
-    UserListingDataSourceFactory(Retrofit retrofit, String query,
+    UserListingDataSourceFactory(Retrofit retrofit, String query, String sortType,
                                       UserListingDataSource.OnUserListingDataFetchedCallback onUserListingDataFetchedCallback) {
         this.retrofit = retrofit;
         this.query = query;
+        this.sortType = sortType;
         this.onUserListingDataFetchedCallback = onUserListingDataFetchedCallback;
         userListingDataSourceMutableLiveData = new MutableLiveData<>();
     }
@@ -25,7 +27,7 @@ public class UserListingDataSourceFactory extends DataSource.Factory {
     @Override
     public DataSource create() {
         userListingDataSource = new UserListingDataSource(retrofit,
-                query, onUserListingDataFetchedCallback);
+                query, sortType, onUserListingDataFetchedCallback);
         userListingDataSourceMutableLiveData.postValue(userListingDataSource);
         return userListingDataSource;
     }
@@ -37,4 +39,8 @@ public class UserListingDataSourceFactory extends DataSource.Factory {
     UserListingDataSource getUserListingDataSource() {
         return userListingDataSource;
     }
+
+    void changeSortType(String sortType) {
+        this.sortType = sortType;
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingFragment.java
index 78153fdc..4b111a51 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingFragment.java
@@ -1,7 +1,6 @@
 package ml.docilealligator.infinityforreddit;
 
 
-import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -11,6 +10,12 @@ import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProviders;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
 import com.bumptech.glide.Glide;
 import com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar;
 
@@ -18,11 +23,6 @@ import javax.inject.Inject;
 import javax.inject.Named;
 
 import SubscribedUserDatabase.SubscribedUserRoomDatabase;
-import androidx.coordinatorlayout.widget.CoordinatorLayout;
-import androidx.fragment.app.Fragment;
-import androidx.lifecycle.ViewModelProviders;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import retrofit2.Retrofit;
@@ -85,11 +85,8 @@ public class UserListingFragment extends Fragment implements FragmentCommunicato
 
         mQuery = getArguments().getString(QUERY_KEY);
 
-        String accessToken = getActivity().getSharedPreferences(SharedPreferencesUtils.AUTH_CODE_FILE_KEY, Context.MODE_PRIVATE)
-                .getString(SharedPreferencesUtils.ACCESS_TOKEN_KEY, "");
-
         UserListingViewModel.Factory factory = new UserListingViewModel.Factory(mRetrofit, mQuery,
-                new UserListingDataSource.OnUserListingDataFetchedCallback() {
+                PostDataSource.SORT_TYPE_RELEVANCE, new UserListingDataSource.OnUserListingDataFetchedCallback() {
                     @Override
                     public void hasUser() {
                         mFetchUserListingInfoLinearLayout.setVisibility(View.GONE);
@@ -97,11 +94,8 @@ public class UserListingFragment extends Fragment implements FragmentCommunicato
 
                     @Override
                     public void noUser() {
-                        mFetchUserListingInfoLinearLayout.setOnClickListener(new View.OnClickListener() {
-                            @Override
-                            public void onClick(View view) {
-                                //Do nothing
-                            }
+                        mFetchUserListingInfoLinearLayout.setOnClickListener(view -> {
+                            //Do nothing
                         });
                         showErrorView(R.string.no_users);
                     }
@@ -145,6 +139,10 @@ public class UserListingFragment extends Fragment implements FragmentCommunicato
         }
     }
 
+    void changeSortType(String sortType) {
+        mUserListingViewModel.changeSortType(sortType);
+    }
+
     @Override
     public void refresh() {
         mUserListingViewModel.refresh();
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingViewModel.java b/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingViewModel.java
index 6a1804db..45317ccf 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingViewModel.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/UserListingViewModel.java
@@ -1,41 +1,51 @@
 package ml.docilealligator.infinityforreddit;
 
-import User.UserData;
 import androidx.annotation.NonNull;
 import androidx.arch.core.util.Function;
 import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.Transformations;
 import androidx.lifecycle.ViewModel;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.paging.LivePagedListBuilder;
 import androidx.paging.PagedList;
+
+import User.UserData;
 import retrofit2.Retrofit;
 
 public class UserListingViewModel extends ViewModel {
     private UserListingDataSourceFactory UserListingDataSourceFactory;
     private LiveData<NetworkState> paginationNetworkState;
     private LiveData<NetworkState> initialLoadingState;
-    private LiveData<PagedList<UserData>> Users;
+    private LiveData<PagedList<UserData>> users;
+    private MutableLiveData<String> sortTypeLiveData;
 
-    UserListingViewModel(Retrofit retrofit, String query,
+    UserListingViewModel(Retrofit retrofit, String query, String sortType,
                               UserListingDataSource.OnUserListingDataFetchedCallback onUserListingDataFetchedCallback) {
-        UserListingDataSourceFactory = new UserListingDataSourceFactory(retrofit, query, onUserListingDataFetchedCallback);
+        UserListingDataSourceFactory = new UserListingDataSourceFactory(retrofit, query, sortType, onUserListingDataFetchedCallback);
 
         initialLoadingState = Transformations.switchMap(UserListingDataSourceFactory.getUserListingDataSourceMutableLiveData(),
                 (Function<UserListingDataSource, LiveData<NetworkState>>) UserListingDataSource::getInitialLoadStateLiveData);
         paginationNetworkState = Transformations.switchMap(UserListingDataSourceFactory.getUserListingDataSourceMutableLiveData(),
                 (Function<UserListingDataSource, LiveData<NetworkState>>) UserListingDataSource::getPaginationNetworkStateLiveData);
+
+        sortTypeLiveData = new MutableLiveData<>();
+        sortTypeLiveData.postValue(sortType);
+
         PagedList.Config pagedListConfig =
                 (new PagedList.Config.Builder())
                         .setEnablePlaceholders(false)
                         .setPageSize(25)
                         .build();
 
-        Users = (new LivePagedListBuilder(UserListingDataSourceFactory, pagedListConfig)).build();
+        users = Transformations.switchMap(sortTypeLiveData, sort -> {
+            UserListingDataSourceFactory.changeSortType(sortTypeLiveData.getValue());
+            return (new LivePagedListBuilder(UserListingDataSourceFactory, pagedListConfig)).build();
+        });
     }
 
     LiveData<PagedList<UserData>> getUsers() {
-        return Users;
+        return users;
     }
 
     LiveData<NetworkState> getPaginationNetworkState() {
@@ -58,22 +68,28 @@ public class UserListingViewModel extends ViewModel {
         UserListingDataSourceFactory.getUserListingDataSource().retryLoadingMore();
     }
 
+    void changeSortType(String sortType) {
+        sortTypeLiveData.postValue(sortType);
+    }
+
     public static class Factory extends ViewModelProvider.NewInstanceFactory {
         private Retrofit retrofit;
         private String query;
+        private String sortType;
         private UserListingDataSource.OnUserListingDataFetchedCallback onUserListingDataFetchedCallback;
 
-        public Factory(Retrofit retrofit, String query,
+        public Factory(Retrofit retrofit, String query, String sortType,
                        UserListingDataSource.OnUserListingDataFetchedCallback onUserListingDataFetchedCallback) {
             this.retrofit = retrofit;
             this.query = query;
+            this.sortType = sortType;
             this.onUserListingDataFetchedCallback = onUserListingDataFetchedCallback;
         }
 
         @NonNull
         @Override
         public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
-            return (T) new UserListingViewModel(retrofit, query, onUserListingDataFetchedCallback);
+            return (T) new UserListingViewModel(retrofit, query, sortType, onUserListingDataFetchedCallback);
         }
     }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
index 9996a4af..ef58c820 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
@@ -253,7 +253,13 @@ public class ViewSubredditDetailActivity extends AppCompatActivity implements So
         });
 
         if(savedInstanceState == null) {
-            replaceFragment(PostDataSource.SORT_TYPE_BEST);
+            mFragment = new PostFragment();
+            Bundle bundle = new Bundle();
+            bundle.putString(PostFragment.EXTRA_SUBREDDIT_NAME, subredditName);
+            bundle.putInt(PostFragment.EXTRA_POST_TYPE, PostDataSource.TYPE_SUBREDDIT);
+            bundle.putString(PostFragment.EXTRA_SORT_TYPE, PostDataSource.SORT_TYPE_BEST);
+            mFragment.setArguments(bundle);
+            getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_view_subreddit_detail_activity, mFragment).commit();
         } else {
             mFragment = getSupportFragmentManager().getFragment(savedInstanceState, FRAGMENT_OUT_STATE_KEY);
             if(mFragment == null) {
@@ -330,16 +336,6 @@ public class ViewSubredditDetailActivity extends AppCompatActivity implements So
         return false;
     }
 
-    private void replaceFragment(String sortType) {
-        mFragment = new PostFragment();
-        Bundle bundle = new Bundle();
-        bundle.putString(PostFragment.EXTRA_SUBREDDIT_NAME, subredditName);
-        bundle.putInt(PostFragment.EXTRA_POST_TYPE, PostDataSource.TYPE_SUBREDDIT);
-        bundle.putString(PostFragment.EXTRA_SORT_TYPE, sortType);
-        mFragment.setArguments(bundle);
-        getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_view_subreddit_detail_activity, mFragment).commit();
-    }
-
     @Override
     protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
@@ -353,7 +349,7 @@ public class ViewSubredditDetailActivity extends AppCompatActivity implements So
 
     @Override
     public void sortTypeSelected(String sortType) {
-        replaceFragment(sortType);
+        ((PostFragment) mFragment).changeSortType(sortType);
     }
 
     @Override