Added feature: View users' best posts.

app/src/main/java/ml/docilealligator/infinityforreddit/JSONUtils.java

@@ -67,4 +67,5 @@ public class JSONUtils {
     static final String LINK_ID_KEY = "link_id";
     public static final String IS_GOLD_KEY = "is_gold";
     public static final String IS_FRIEND_KEY = "is_friend";
+    static final String KIND_KEY = "kind";
 }

app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java

@@ -116,7 +116,7 @@ public class MainActivity extends AppCompatActivity {
             if(savedInstanceState == null) {
                 mFragment = new PostFragment();
                 Bundle bundle = new Bundle();
-                bundle.putBoolean(PostFragment.IS_BEST_POST_KEY, true);
+                bundle.putInt(PostFragment.POST_TYPE_KEY, PostDataSource.TYPE_FRONT_PAGE);
                 mFragment.setArguments(bundle);
                 getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_content_main, mFragment).commit();
             } else {

app/src/main/java/ml/docilealligator/infinityforreddit/ParsePost.java

@@ -55,6 +55,10 @@ class ParsePost {
 
                 lastItem = jsonResponse.getJSONObject(JSONUtils.DATA_KEY).getString(JSONUtils.AFTER_KEY);
                 for(int i = 0; i < allData.length(); i++) {
+                    String kind = allData.getJSONObject(i).getString(JSONUtils.KIND_KEY);
+                    if(!kind.equals("t3")) {
+                        continue;
+                    }
                     JSONObject data = allData.getJSONObject(i).getJSONObject(JSONUtils.DATA_KEY);
                     String id = data.getString(JSONUtils.ID_KEY);
                     String fullName = data.getString(JSONUtils.NAME_KEY);

app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java

@@ -13,11 +13,14 @@ import retrofit2.Callback;
 import retrofit2.Retrofit;
 
 class PostDataSource extends PageKeyedDataSource<String, Post> {
+    static final int TYPE_FRONT_PAGE = 0;
+    static final int TYPE_SUBREDDIT = 1;
+    static final int TYPE_USER = 2;
     private Retrofit retrofit;
     private String accessToken;
     private Locale locale;
-    private boolean isBestPost;
+    private String name;
-    private String subredditName;
+    private int postType;
 
     private MutableLiveData<NetworkState> paginationNetworkStateLiveData;
     private MutableLiveData<NetworkState> initialLoadStateLiveData;
@@ -27,23 +30,22 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
     private LoadParams<String> params;
     private LoadCallback<String, Post> callback;
 
-    PostDataSource(Retrofit retrofit, String accessToken, Locale locale, boolean isBestPost) {
+    PostDataSource(Retrofit retrofit, String accessToken, Locale locale, int postType) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.locale = locale;
-        this.isBestPost = isBestPost;
         paginationNetworkStateLiveData = new MutableLiveData();
         initialLoadStateLiveData = new MutableLiveData();
-
+        this.postType = postType;
     }
 
-    PostDataSource(Retrofit retrofit, Locale locale, boolean isBestPost, String subredditName) {
+    PostDataSource(Retrofit retrofit, Locale locale, String name, int postType) {
         this.retrofit = retrofit;
         this.locale = locale;
-        this.isBestPost = isBestPost;
+        this.name = name;
-        this.subredditName = subredditName;
         paginationNetworkStateLiveData = new MutableLiveData();
         initialLoadStateLiveData = new MutableLiveData();
+        this.postType = postType;
     }
 
     MutableLiveData getPaginationNetworkStateLiveData() {
@@ -61,10 +63,47 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
 
         initialLoadStateLiveData.postValue(NetworkState.LOADING);
 
-        if(isBestPost) {
+        switch (postType) {
+            case TYPE_FRONT_PAGE:
+                loadBestPostsInitial(callback);
+                break;
+            case TYPE_SUBREDDIT:
+                loadSubredditPostsInitial(callback);
+                break;
+            case TYPE_USER:
+                loadUserPostsInitial(callback);
+                break;
+        }
+    }
+
+    @Override
+    public void loadBefore(@NonNull LoadParams<String> params, @NonNull LoadCallback<String, Post> callback) {
+
+    }
+
+    @Override
+    public void loadAfter(@NonNull LoadParams<String> params, @NonNull final LoadCallback<String, Post> callback) {
+        this.params = params;
+        this.callback = callback;
+
+        paginationNetworkStateLiveData.postValue(NetworkState.LOADING);
+
+        switch (postType) {
+            case TYPE_FRONT_PAGE:
+                loadBestPostsAfter(params, callback);
+                break;
+            case TYPE_SUBREDDIT:
+                loadSubredditPostsAfter(params, callback);
+                break;
+            case TYPE_USER:
+                loadUserPostsAfter(params, callback);
+        }
+    }
+
+    private void loadBestPostsInitial(@NonNull final LoadInitialCallback<String, Post> callback) {
         RedditAPI api = retrofit.create(RedditAPI.class);
 
-            Call<String> bestPost = api.getBestPost(null, RedditUtils.getOAuthHeader(accessToken));
+        Call<String> bestPost = api.getBestPosts(null, RedditUtils.getOAuthHeader(accessToken));
         bestPost.enqueue(new Callback<String>() {
             @Override
             public void onResponse(Call<String> call, retrofit2.Response<String> response) {
@@ -95,57 +134,11 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
                 initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, errorMessage));
             }
         });
-        } else {
+    }
+
+    private void loadBestPostsAfter(@NonNull LoadParams<String> params, @NonNull final LoadCallback<String, Post> callback) {
         RedditAPI api = retrofit.create(RedditAPI.class);
-            Call<String> getPost = api.getPost(subredditName, null);
+        Call<String> bestPost = api.getBestPosts(params.key, RedditUtils.getOAuthHeader(accessToken));
-            getPost.enqueue(new Callback<String>() {
-                @Override
-                public void onResponse(Call<String> call, retrofit2.Response<String> response) {
-                        if(response.isSuccessful()) {
-                            ParsePost.parsePost(response.body(), locale,
-                                    new ParsePost.ParsePostListener() {
-                                        @Override
-                                        public void onParsePostSuccess(ArrayList<Post> newPosts, String lastItem) {
-                                            callback.onResult(newPosts, null, lastItem);
-                                            initialLoadStateLiveData.postValue(NetworkState.LOADED);
-                                        }
-
-                                        @Override
-                                        public void onParsePostFail() {
-                                            Log.i("Post fetch error", "Error parsing data");
-                                            initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, "Error parsing data"));
-                                        }
-                                    });
-                        } else {
-                            Log.i("Post fetch error", response.message());
-                            initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, response.message()));
-                        }
-                }
-
-                @Override
-                public void onFailure(Call<String> call, Throwable t) {
-                    String errorMessage = t == null ? "unknown error" : t.getMessage();
-                    initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, errorMessage));
-                }
-            });
-        }
-    }
-
-    @Override
-    public void loadBefore(@NonNull LoadParams<String> params, @NonNull LoadCallback<String, Post> callback) {
-
-    }
-
-    @Override
-    public void loadAfter(@NonNull LoadParams<String> params, @NonNull final LoadCallback<String, Post> callback) {
-        this.params = params;
-        this.callback = callback;
-
-        paginationNetworkStateLiveData.postValue(NetworkState.LOADING);
-
-        if(isBestPost) {
-            RedditAPI api = retrofit.create(RedditAPI.class);
-            Call<String> bestPost = api.getBestPost(params.key, RedditUtils.getOAuthHeader(accessToken));
 
         bestPost.enqueue(new Callback<String>() {
             @Override
@@ -176,9 +169,46 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
                 paginationNetworkStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, errorMessage));
             }
         });
-        } else {
+    }
+
+    private void loadSubredditPostsInitial(@NonNull final LoadInitialCallback<String, Post> callback) {
         RedditAPI api = retrofit.create(RedditAPI.class);
-            Call<String> getPost = api.getPost(subredditName, params.key);
+        Call<String> getPost = api.getSubredditBestPosts(name, null);
+        getPost.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, retrofit2.Response<String> response) {
+                if(response.isSuccessful()) {
+                    ParsePost.parsePost(response.body(), locale,
+                            new ParsePost.ParsePostListener() {
+                                @Override
+                                public void onParsePostSuccess(ArrayList<Post> newPosts, String lastItem) {
+                                    callback.onResult(newPosts, null, lastItem);
+                                    initialLoadStateLiveData.postValue(NetworkState.LOADED);
+                                }
+
+                                @Override
+                                public void onParsePostFail() {
+                                    Log.i("Post fetch error", "Error parsing data");
+                                    initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, "Error parsing data"));
+                                }
+                            });
+                } else {
+                    Log.i("Post fetch error", response.message());
+                    initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, response.message()));
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                String errorMessage = t == null ? "unknown error" : t.getMessage();
+                initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, errorMessage));
+            }
+        });
+    }
+
+    private void loadSubredditPostsAfter(@NonNull LoadParams<String> params, @NonNull final LoadCallback<String, Post> callback) {
+        RedditAPI api = retrofit.create(RedditAPI.class);
+        Call<String> getPost = api.getSubredditBestPosts(name, params.key);
         getPost.enqueue(new Callback<String>() {
             @Override
             public void onResponse(Call<String> call, retrofit2.Response<String> response) {
@@ -209,6 +239,74 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
             }
         });
     }
+
+    private void loadUserPostsInitial(@NonNull final LoadInitialCallback<String, Post> callback) {
+        RedditAPI api = retrofit.create(RedditAPI.class);
+        Call<String> getPost = api.getUserBestPosts(name, null);
+        getPost.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, retrofit2.Response<String> response) {
+                if(response.isSuccessful()) {
+                    ParsePost.parsePost(response.body(), locale,
+                            new ParsePost.ParsePostListener() {
+                                @Override
+                                public void onParsePostSuccess(ArrayList<Post> newPosts, String lastItem) {
+                                    callback.onResult(newPosts, null, lastItem);
+                                    initialLoadStateLiveData.postValue(NetworkState.LOADED);
+                                }
+
+                                @Override
+                                public void onParsePostFail() {
+                                    Log.i("Post fetch error", "Error parsing data");
+                                    initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, "Error parsing data"));
+                                }
+                            });
+                } else {
+                    Log.i("Post fetch error", response.message());
+                    initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, response.message()));
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                String errorMessage = t == null ? "unknown error" : t.getMessage();
+                initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, errorMessage));
+            }
+        });
+    }
+
+    private void loadUserPostsAfter(@NonNull LoadParams<String> params, @NonNull final LoadCallback<String, Post> callback) {
+        RedditAPI api = retrofit.create(RedditAPI.class);
+        Call<String> getPost = api.getUserBestPosts(name, params.key);
+        getPost.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, retrofit2.Response<String> response) {
+                if(response.isSuccessful()) {
+                    ParsePost.parsePost(response.body(), locale, new ParsePost.ParsePostListener() {
+                        @Override
+                        public void onParsePostSuccess(ArrayList<Post> newPosts, String lastItem) {
+                            callback.onResult(newPosts, lastItem);
+                            paginationNetworkStateLiveData.postValue(NetworkState.LOADED);
+                        }
+
+                        @Override
+                        public void onParsePostFail() {
+                            Log.i("Best post", "Error parsing data");
+                            paginationNetworkStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, "Error parsing data"));
+                        }
+                    });
+                } else {
+                    Log.i("Best post", response.message());
+                    paginationNetworkStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, response.message()));
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                String errorMessage = t == null ? "unknown error" : t.getMessage();
+                paginationNetworkStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, errorMessage));
+            }
+        });
     }
 
     void retry() {

app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSourceFactory.java

@@ -12,33 +12,33 @@ class PostDataSourceFactory extends DataSource.Factory {
     private String accessToken;
     private Locale locale;
     private String subredditName;
-    private boolean isBestPost;
+    private int postType;
 
     private PostDataSource postDataSource;
     private MutableLiveData<PostDataSource> postDataSourceLiveData;
 
-    PostDataSourceFactory(Retrofit retrofit, String accessToken, Locale locale, boolean isBestPost) {
+    PostDataSourceFactory(Retrofit retrofit, String accessToken, Locale locale, int postType) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.locale = locale;
         postDataSourceLiveData = new MutableLiveData<>();
-        this.isBestPost = isBestPost;
+        this.postType = postType;
     }
 
-    PostDataSourceFactory(Retrofit retrofit, Locale locale, boolean isBestPost, String subredditName) {
+    PostDataSourceFactory(Retrofit retrofit, Locale locale, String subredditName, int postType) {
         this.retrofit = retrofit;
         this.locale = locale;
         this.subredditName = subredditName;
         postDataSourceLiveData = new MutableLiveData<>();
-        this.isBestPost = isBestPost;
+        this.postType = postType;
     }
 
     @Override
     public DataSource create() {
-        if(isBestPost) {
+        if(postType == PostDataSource.TYPE_FRONT_PAGE) {
-            postDataSource = new PostDataSource(retrofit, accessToken, locale, isBestPost);
+            postDataSource = new PostDataSource(retrofit, accessToken, locale, postType);
         } else {
-            postDataSource = new PostDataSource(retrofit, locale, isBestPost, subredditName);
+            postDataSource = new PostDataSource(retrofit, locale, subredditName, postType);
         }
 
         postDataSourceLiveData.postValue(postDataSource);

app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java

@@ -31,8 +31,8 @@ import retrofit2.Retrofit;
  */
 public class PostFragment extends Fragment implements FragmentCommunicator {
 
-    static final String SUBREDDIT_NAME_KEY = "SNK";
+    static final String NAME_KEY = "NK";
-    static final String IS_BEST_POST_KEY = "IBPK";
+    static final String POST_TYPE_KEY = "PTK";
 
     private CoordinatorLayout mCoordinatorLayout;
     private RecyclerView mPostRecyclerView;
@@ -41,8 +41,8 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
     private LinearLayout mFetchPostErrorLinearLayout;
     private ImageView mFetchPostErrorImageView;
 
-    private boolean mIsBestPost;
+    private String mName;
-    private String mSubredditName;
+    private int mPostType;
 
     private PostRecyclerViewAdapter mAdapter;
 
@@ -93,20 +93,20 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             }
         });*/
 
-        mIsBestPost = getArguments().getBoolean(IS_BEST_POST_KEY);
+        mPostType = getArguments().getInt(POST_TYPE_KEY);
 
-        if(!mIsBestPost) {
+        if(mPostType != PostDataSource.TYPE_FRONT_PAGE) {
-            mSubredditName = getArguments().getString(SUBREDDIT_NAME_KEY);
+            mName = getArguments().getString(NAME_KEY);
         } else {
             mFetchPostErrorLinearLayout.setOnClickListener(view -> mPostViewModel.retry());
         }
 
-        if(mIsBestPost) {
+        if(mPostType == PostDataSource.TYPE_FRONT_PAGE) {
             mAdapter = new PostRecyclerViewAdapter(getActivity(), mOauthRetrofit,
-                    mSharedPreferences, mIsBestPost, () -> mPostViewModel.retryLoadingMore());
+                    mSharedPreferences, mPostType, () -> mPostViewModel.retryLoadingMore());
         } else {
             mAdapter = new PostRecyclerViewAdapter(getActivity(), mRetrofit,
-                    mSharedPreferences, mIsBestPost, () -> mPostViewModel.retryLoadingMore());
+                    mSharedPreferences, mPostType, () -> mPostViewModel.retryLoadingMore());
         }
         mPostRecyclerView.setAdapter(mAdapter);
 
@@ -114,12 +114,12 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                 .getString(SharedPreferencesUtils.ACCESS_TOKEN_KEY, "");
 
         PostViewModel.Factory factory;
-        if(mIsBestPost) {
+        if(mPostType == PostDataSource.TYPE_FRONT_PAGE) {
             factory = new PostViewModel.Factory(mOauthRetrofit, accessToken,
-                    getResources().getConfiguration().locale, mIsBestPost);
+                    getResources().getConfiguration().locale, mPostType);
         } else {
             factory = new PostViewModel.Factory(mRetrofit,
-                    getResources().getConfiguration().locale, mIsBestPost, mSubredditName);
+                    getResources().getConfiguration().locale, mName, mPostType);
         }
         mPostViewModel = ViewModelProviders.of(this, factory).get(PostViewModel.class);
         mPostViewModel.getPosts().observe(this, posts -> mAdapter.submitList(posts));
@@ -149,7 +149,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
 
     private void showErrorView() {
         mProgressBar.setVisibility(View.GONE);
-        if(mIsBestPost) {
+        if(mPostType == PostDataSource.TYPE_FRONT_PAGE) {
             if(getActivity() != null && isAdded()) {
                 mFetchPostErrorLinearLayout.setVisibility(View.VISIBLE);
                 Glide.with(this).load(R.drawable.load_post_error_indicator).into(mFetchPostErrorImageView);

app/src/main/java/ml/docilealligator/infinityforreddit/PostRecyclerViewAdapter.java

@@ -60,7 +60,7 @@ class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView.ViewHo
     private SubredditDao subredditDao;
     private UserDao userDao;
     private boolean canStartActivity = true;
-    private boolean hasMultipleSubreddits;
+    private int postType;
 
     private static final int VIEW_TYPE_DATA = 0;
     private static final int VIEW_TYPE_ERROR = 1;
@@ -73,14 +73,14 @@ class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView.ViewHo
         void retryLoadingMore();
     }
 
-    PostRecyclerViewAdapter(Context context, Retrofit oauthRetrofit, SharedPreferences sharedPreferences, boolean hasMultipleSubreddits,
+    PostRecyclerViewAdapter(Context context, Retrofit oauthRetrofit, SharedPreferences sharedPreferences, int postType,
                             RetryLoadingMoreCallback retryLoadingMoreCallback) {
         super(DIFF_CALLBACK);
         if(context != null) {
             mContext = context;
             mOauthRetrofit = oauthRetrofit;
             mSharedPreferences = sharedPreferences;
-            this.hasMultipleSubreddits = hasMultipleSubreddits;
+            this.postType = postType;
             glide = Glide.with(mContext.getApplicationContext());
             subredditDao = SubredditRoomDatabase.getDatabase(mContext.getApplicationContext()).subredditDao();
             userDao = UserRoomDatabase.getDatabase(mContext.getApplicationContext()).userDao();
@@ -148,7 +148,7 @@ class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView.ViewHo
                     }
                 });
 
-                if(hasMultipleSubreddits) {
+                if(postType != PostDataSource.TYPE_SUBREDDIT) {
                     if(post.getSubredditIconUrl() == null) {
                         new LoadSubredditIconAsyncTask(subredditDao, subredditName,
                                 iconImageUrl -> {
@@ -355,7 +355,7 @@ class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView.ViewHo
                     loadImage(holder, post);
                 }
 
-                if(!hasMultipleSubreddits && post.isStickied()) {
+                if(postType == PostDataSource.TYPE_SUBREDDIT && post.isStickied()) {
                     ((DataViewHolder) holder).stickiedPostImageView.setVisibility(View.VISIBLE);
                     glide.load(R.drawable.thumbtack).into(((DataViewHolder) holder).stickiedPostImageView);
                 }

app/src/main/java/ml/docilealligator/infinityforreddit/PostViewModel.java

@@ -18,8 +18,8 @@ public class PostViewModel extends ViewModel {
     private LiveData<NetworkState> initialLoadingState;
     private LiveData<PagedList<Post>> posts;
 
-    public PostViewModel(Retrofit retrofit, String accessToken, Locale locale, boolean isBestPost) {
+    public PostViewModel(Retrofit retrofit, String accessToken, Locale locale, int postType) {
-        postDataSourceFactory = new PostDataSourceFactory(retrofit, accessToken, locale, isBestPost);
+        postDataSourceFactory = new PostDataSourceFactory(retrofit, accessToken, locale, postType);
 
         initialLoadingState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
                 dataSource -> dataSource.getInitialLoadStateLiveData());
@@ -34,8 +34,8 @@ public class PostViewModel extends ViewModel {
         posts = (new LivePagedListBuilder(postDataSourceFactory, pagedListConfig)).build();
     }
 
-    public PostViewModel(Retrofit retrofit, Locale locale, boolean isBestPost, String subredditName) {
+    public PostViewModel(Retrofit retrofit, Locale locale, String subredditName, int postType) {
-        postDataSourceFactory = new PostDataSourceFactory(retrofit, locale, isBestPost, subredditName);
+        postDataSourceFactory = new PostDataSourceFactory(retrofit, locale, subredditName, postType);
 
         initialLoadingState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
                 dataSource -> dataSource.getInitialLoadStateLiveData());
@@ -79,30 +79,30 @@ public class PostViewModel extends ViewModel {
         private Retrofit retrofit;
         private String accessToken;
         private Locale locale;
-        private boolean isBestPost;
         private String subredditName;
+        private int postType;
 
-        public Factory(Retrofit retrofit, String accessToken, Locale locale, boolean isBestPost) {
+        public Factory(Retrofit retrofit, String accessToken, Locale locale, int postType) {
             this.retrofit = retrofit;
             this.accessToken = accessToken;
             this.locale = locale;
-            this.isBestPost = isBestPost;
+            this.postType = postType;
         }
 
-        public Factory(Retrofit retrofit, Locale locale, boolean isBestPost, String subredditName) {
+        public Factory(Retrofit retrofit, Locale locale, String subredditName, int postType) {
             this.retrofit = retrofit;
             this.locale = locale;
-            this.isBestPost = isBestPost;
             this.subredditName = subredditName;
+            this.postType = postType;
         }
 
         @NonNull
         @Override
         public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
-            if(isBestPost) {
+            if(postType == PostDataSource.TYPE_FRONT_PAGE) {
-                return (T) new PostViewModel(retrofit, accessToken, locale, isBestPost);
+                return (T) new PostViewModel(retrofit, accessToken, locale, postType);
             } else {
-                return (T) new PostViewModel(retrofit, locale, isBestPost, subredditName);
+                return (T) new PostViewModel(retrofit, locale, subredditName, postType);
             }
         }
     }

app/src/main/java/ml/docilealligator/infinityforreddit/RedditAPI.java

@@ -36,10 +36,13 @@ public interface RedditAPI {
     Call<String> voteThing(@HeaderMap Map<String, String> headers, @FieldMap Map<String, String> params);
 
     @GET("best?raw_json=1")
-    Call<String> getBestPost(@Query("after") String lastItem, @HeaderMap Map<String, String> headers);
+    Call<String> getBestPosts(@Query("after") String lastItem, @HeaderMap Map<String, String> headers);
 
     @GET("r/{subredditName}.json?raw_json=1&limit=25")
-    Call<String> getPost(@Path("subredditName") String subredditName, @Query("after") String lastItem);
+    Call<String> getSubredditBestPosts(@Path("subredditName") String subredditName, @Query("after") String lastItem);
+
+    @GET("user/{userName}.json?raw_json=1&limit=25")
+    Call<String> getUserBestPosts(@Path("userName") String userName, @Query("after") String lastItem);
 
     @GET("user/{username}/about.json?raw_json=1")
     Call<String> getUserData(@Path("username") String username);

app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java

@@ -293,8 +293,8 @@ public class ViewSubredditDetailActivity extends AppCompatActivity {
         if(savedInstanceState == null) {
             mFragment = new PostFragment();
             Bundle bundle = new Bundle();
-            bundle.putString(PostFragment.SUBREDDIT_NAME_KEY, subredditName);
+            bundle.putString(PostFragment.NAME_KEY, subredditName);
-            bundle.putBoolean(PostFragment.IS_BEST_POST_KEY, false);
+            bundle.putInt(PostFragment.POST_TYPE_KEY, PostDataSource.TYPE_SUBREDDIT);
             mFragment.setArguments(bundle);
             getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_view_subreddit_detail_activity, mFragment).commit();
         } else {

app/src/main/java/ml/docilealligator/infinityforreddit/ViewUserDetailActivity.java

@@ -13,6 +13,7 @@ import android.support.design.widget.AppBarLayout;
 import android.support.design.widget.CollapsingToolbarLayout;
 import android.support.design.widget.CoordinatorLayout;
 import android.support.design.widget.Snackbar;
+import android.support.v4.app.Fragment;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.MenuItem;
@@ -49,6 +50,8 @@ public class ViewUserDetailActivity extends AppCompatActivity {
 
     static final String EXTRA_USER_NAME_KEY = "EUNK";
 
+    private static final String FRAGMENT_OUT_STATE_KEY = "FOSK";
+
     @BindView(R.id.coordinator_layout_view_user_detail_activity) CoordinatorLayout coordinatorLayout;
     @BindView(R.id.banner_image_view_view_user_detail_activity) ImageView bannerImageView;
     @BindView(R.id.icon_gif_image_view_view_user_detail_activity) GifImageView iconGifImageView;
@@ -56,6 +59,7 @@ public class ViewUserDetailActivity extends AppCompatActivity {
     @BindView(R.id.subscribe_user_chip_view_user_detail_activity) Chip subscribeUserChip;
     @BindView(R.id.karma_text_view_view_user_detail_activity) TextView karmaTextView;
 
+    private Fragment mFragment;
     private SubscribedUserDao subscribedUserDao;
     private RequestManager glide;
     private UserViewModel userViewModel;
@@ -268,6 +272,18 @@ public class ViewUserDetailActivity extends AppCompatActivity {
                 makeSnackbar(R.string.cannot_fetch_user_info);
             }
         });
+
+        if(savedInstanceState == null) {
+            mFragment = new PostFragment();
+            Bundle bundle = new Bundle();
+            bundle.putString(PostFragment.NAME_KEY, userName);
+            bundle.putInt(PostFragment.POST_TYPE_KEY, PostDataSource.TYPE_USER);
+            mFragment.setArguments(bundle);
+            getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_view_user_detail_activity, mFragment).commit();
+        } else {
+            mFragment = getSupportFragmentManager().getFragment(savedInstanceState, FRAGMENT_OUT_STATE_KEY);
+            getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_view_user_detail_activity, mFragment).commit();
+        }
     }
 
     @Override