Temporarily use the old way to load comments instead of Paging library. Load more parent-level comments once. Loading comments of comments is now working.

9 files changed, 238 insertions, 137 deletions

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentAdapter.java
index 0f7e191c..44bc7fe8 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentAdapter.java
@@ -21,7 +21,6 @@ import android.widget.Toast;
 
 import com.multilevelview.models.RecyclerViewItem;
 
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
 
@@ -77,7 +76,7 @@ public class CommentAdapter extends PagedListAdapter<CommentData, RecyclerView.V
     @NonNull
     @Override
     public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int i) {
-        return new CommentViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_comment, parent, false));
+        return new CommentViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_comment, parent, false));
     }
 
     @Override
@@ -122,16 +121,22 @@ public class CommentAdapter extends PagedListAdapter<CommentData, RecyclerView.V
 
         ((CommentViewHolder) viewHolder).expandButton.setOnClickListener(view -> {
             if(commentItem.hasChildren() && commentItem.getChildren().size() > 0) {
-                //mRecyclerView.toggleItemsGroup(viewHolder.getAdapterPosition());
                 setExpandButton(((CommentViewHolder) viewHolder).expandButton, commentItem.isExpanded());
             } else {
                 ((CommentViewHolder) viewHolder).loadMoreCommentsProgressBar.setVisibility(View.VISIBLE);
                 FetchComment.fetchComment(mRetrofit, subredditNamePrefixed, article, commentItem.getId(),
-                        new FetchComment.FetchCommentListener() {
+                        locale, false, commentItem.getDepth(), new FetchComment.FetchCommentListener() {
                             @Override
-                            public void onFetchCommentSuccess(String response) {
-                                ParseComment.parseComment(response, new ArrayList<CommentData>(),
-                                        locale, false, commentItem.getDepth(), 1,
+                            public void onFetchCommentSuccess(List<?> commentData,
+                                                              String parentId, String commaSeparatedChildren) {
+                                commentItem.addChildren((List<RecyclerViewItem>) commentData);
+                                ((CommentViewHolder) viewHolder).loadMoreCommentsProgressBar
+                                        .setVisibility(View.GONE);
+                                ((CommentViewHolder) viewHolder).expandButton
+                                        .setImageResource(R.drawable.ic_expand_less_black_20dp);
+
+                                /*ParseComment.parseComment(response, new ArrayList<>(),
+                                        locale, false, commentItem.getDepth(),
                                         new ParseComment.ParseCommentListener() {
                                             @Override
                                             public void onParseCommentSuccess(List<?> commentData,
@@ -139,7 +144,6 @@ public class CommentAdapter extends PagedListAdapter<CommentData, RecyclerView.V
                                                 commentItem.addChildren((List<RecyclerViewItem>) commentData);
                                                 ((CommentViewHolder) viewHolder).loadMoreCommentsProgressBar
                                                         .setVisibility(View.GONE);
-                                                //mRecyclerView.toggleItemsGroup(viewHolder.getAdapterPosition());
                                                 ((CommentViewHolder) viewHolder).expandButton
                                                         .setImageResource(R.drawable.ic_expand_less_black_20dp);
                                             }
@@ -149,12 +153,13 @@ public class CommentAdapter extends PagedListAdapter<CommentData, RecyclerView.V
                                                 ((CommentViewHolder) viewHolder).loadMoreCommentsProgressBar
                                                         .setVisibility(View.GONE);
                                             }
-                                        });
+                                        });*/
                             }
 
                             @Override
-                            public void onFetchCommentFail() {
-
+                            public void onFetchCommentFailed() {
+                                ((CommentViewHolder) viewHolder).loadMoreCommentsProgressBar
+                                        .setVisibility(View.GONE);
                             }
                         });
             }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSource.java b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSource.java
index 1c06ba04..9e98f29a 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSource.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSource.java
@@ -74,7 +74,7 @@ public class CommentDataSource extends PageKeyedDataSource<String, Post> {
             public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
                 if(response.isSuccessful()) {
                     ParseComment.parseComment(response.body(), new ArrayList<>(), locale, isPost,
-                            0, 1, new ParseComment.ParseCommentListener() {
+                            0, new ParseComment.ParseCommentListener() {
                                 @Override
                                 public void onParseCommentSuccess(List<?> commentData, String parentId,
                                                                   String commaSeparatedChildren) {
@@ -138,8 +138,8 @@ public class CommentDataSource extends PageKeyedDataSource<String, Post> {
                                 @Override
                                 public void onResponse(Call<String> call, Response<String> response) {
                                     if(response.isSuccessful()) {
-                                        ParseComment.parseMoreComment(response.body(), new ArrayList<>(), locale, isPost,
-                                                0, 0, new ParseComment.ParseCommentListener() {
+                                        ParseComment.parseMoreComment(response.body(), new ArrayList<>(), locale,
+                                                0, new ParseComment.ParseCommentListener() {
                                                     @Override
                                                     public void onParseCommentSuccess(List<?> commentData, String parentId,
                                                                                       String commaSeparatedChildren) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentMultiLevelRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentMultiLevelRecyclerViewAdapter.java
index 719bd833..77adf5f1 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentMultiLevelRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentMultiLevelRecyclerViewAdapter.java
@@ -9,6 +9,7 @@ import android.support.annotation.NonNull;
 import android.support.customtabs.CustomTabsIntent;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.widget.RecyclerView;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -61,7 +62,7 @@ class CommentMultiLevelRecyclerViewAdapter extends MultiLevelAdapter {
     @NonNull
     @Override
     public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
-        return new CommentViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_comment, parent, false));
+        return new CommentViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_comment, parent, false));
     }
 
     @Override
@@ -78,11 +79,11 @@ class CommentMultiLevelRecyclerViewAdapter extends MultiLevelAdapter {
 
         ((CommentViewHolder) holder).commentTimeTextView.setText(commentItem.getCommentTime());
         SpannableConfiguration spannableConfiguration = SpannableConfiguration.builder(mContext).linkResolver((view, link) -> {
-            if(link.startsWith("/u/")) {
+            if (link.startsWith("/u/")) {
                 Intent intent = new Intent(mContext, ViewUserDetailActivity.class);
                 intent.putExtra(ViewUserDetailActivity.EXTRA_USER_NAME_KEY, link.substring(3));
                 mContext.startActivity(intent);
-            } else if(link.startsWith("/r/")) {
+            } else if (link.startsWith("/r/")) {
                 Intent intent = new Intent(mContext, ViewSubredditDetailActivity.class);
                 intent.putExtra(ViewSubredditDetailActivity.EXTRA_SUBREDDIT_NAME_KEY, link.substring(3));
                 mContext.startActivity(intent);
@@ -100,45 +101,36 @@ class CommentMultiLevelRecyclerViewAdapter extends MultiLevelAdapter {
         ((CommentViewHolder) holder).scoreTextView.setText(Integer.toString(commentItem.getScore()));
 
         ((CommentViewHolder) holder).verticalBlock.getLayoutParams().width = commentItem.getDepth() * 16;
-        if(commentItem.hasReply()) {
+        if (commentItem.hasReply()) {
             setExpandButton(((CommentViewHolder) holder).expandButton, commentItem.isExpanded());
         }
 
         ((CommentViewHolder) holder).expandButton.setOnClickListener(view -> {
-            if(commentItem.hasChildren() && commentItem.getChildren().size() > 0) {
+            if (commentItem.hasChildren() && commentItem.getChildren().size() > 0) {
                 mMultiLevelRecyclerView.toggleItemsGroup(holder.getAdapterPosition());
                 setExpandButton(((CommentViewHolder) holder).expandButton, commentItem.isExpanded());
             } else {
                 ((CommentViewHolder) holder).loadMoreCommentsProgressBar.setVisibility(View.VISIBLE);
                 FetchComment.fetchComment(mRetrofit, subredditNamePrefixed, article, commentItem.getId(),
-                        new FetchComment.FetchCommentListener() {
+                        locale, false, commentItem.getDepth(), new FetchComment.FetchCommentListener() {
                             @Override
-                            public void onFetchCommentSuccess(String response) {
-                                ParseComment.parseComment(response, new ArrayList<CommentData>(),
-                                        locale, false, commentItem.getDepth(), 1,
-                                        new ParseComment.ParseCommentListener() {
-                                            @Override
-                                            public void onParseCommentSuccess(List<?> commentData,
-                                                                              String parentId, String commaSeparatedChildren) {
-                                                commentItem.addChildren((List<RecyclerViewItem>) commentData);
-                                                ((CommentViewHolder) holder).loadMoreCommentsProgressBar
-                                                        .setVisibility(View.GONE);
-                                                mMultiLevelRecyclerView.toggleItemsGroup(holder.getAdapterPosition());
-                                                ((CommentViewHolder) holder).expandButton
-                                                        .setImageResource(R.drawable.ic_expand_less_black_20dp);
-                                            }
-
-                                            @Override
-                                            public void onParseCommentFailed() {
-                                                ((CommentViewHolder) holder).loadMoreCommentsProgressBar
-                                                        .setVisibility(View.GONE);
-                                            }
-                                        });
+                            public void onFetchCommentSuccess(List<?> commentData,
+                                                              String parentId, String commaSeparatedChildren) {
+                                commentItem.addChildren((List<RecyclerViewItem>) commentData);
+                                for (RecyclerViewItem r : (List<RecyclerViewItem>) commentData) {
+                                    Log.i("asdfasdfasd", Integer.toString(r.getLevel()));
+                                }
+                                ((CommentViewHolder) holder).loadMoreCommentsProgressBar
+                                        .setVisibility(View.GONE);
+                                mMultiLevelRecyclerView.toggleItemsGroup(holder.getAdapterPosition());
+                                ((CommentViewHolder) holder).expandButton
+                                        .setImageResource(R.drawable.ic_expand_less_black_20dp);
                             }
 
                             @Override
-                            public void onFetchCommentFail() {
-
+                            public void onFetchCommentFailed() {
+                                ((CommentViewHolder) holder).loadMoreCommentsProgressBar
+                                        .setVisibility(View.GONE);
                             }
                         });
             }
@@ -162,17 +154,17 @@ class CommentMultiLevelRecyclerViewAdapter extends MultiLevelAdapter {
 
             if (((CommentViewHolder) holder).upvoteButton.getColorFilter() == null) {
                 ((CommentViewHolder) holder).upvoteButton.setColorFilter(ContextCompat.getColor(mContext, R.color.colorPrimary), android.graphics.PorterDuff.Mode.SRC_IN);
-                if(isDownvotedBefore) {
+                if (isDownvotedBefore) {
                     ((CommentViewHolder) holder).scoreTextView.setText(Integer.toString(commentItem.getScore() + 2));
                 } else {
                     ((CommentViewHolder) holder).scoreTextView.setText(Integer.toString(commentItem.getScore() + 1));
                 }
 
-                VoteThing.voteThing(mOauthRetrofit,mSharedPreferences,  new VoteThing.VoteThingListener() {
+                VoteThing.voteThing(mOauthRetrofit, mSharedPreferences, new VoteThing.VoteThingListener() {
                     @Override
                     public void onVoteThingSuccess(int position1) {
                         commentItem.setVoteType(1);
-                        if(isDownvotedBefore) {
+                        if (isDownvotedBefore) {
                             commentItem.setScore(commentItem.getScore() + 2);
                         } else {
                             commentItem.setScore(commentItem.getScore() + 1);
@@ -228,7 +220,7 @@ class CommentMultiLevelRecyclerViewAdapter extends MultiLevelAdapter {
                     @Override
                     public void onVoteThingSuccess(int position12) {
                         commentItem.setVoteType(-1);
-                        if(isUpvotedBefore) {
+                        if (isUpvotedBefore) {
                             commentItem.setScore(commentItem.getScore() - 2);
                         } else {
                             commentItem.setScore(commentItem.getScore() - 1);
@@ -269,8 +261,16 @@ class CommentMultiLevelRecyclerViewAdapter extends MultiLevelAdapter {
 
     @Override
     public void onViewRecycled(@NonNull RecyclerView.ViewHolder holder) {
-        ((CommentViewHolder) holder).expandButton.setVisibility(View.GONE);
-        ((CommentViewHolder) holder).loadMoreCommentsProgressBar.setVisibility(View.GONE);
+        if (holder instanceof CommentViewHolder) {
+            ((CommentViewHolder) holder).expandButton.setVisibility(View.GONE);
+            ((CommentViewHolder) holder).loadMoreCommentsProgressBar.setVisibility(View.GONE);
+        }
+    }
+
+    void addComments(ArrayList<CommentData> comments) {
+        int sizeBefore = mCommentData.size();
+        mCommentData.addAll(comments);
+        notifyItemRangeInserted(sizeBefore, mCommentData.size() - sizeBefore);
     }
 
     private void setExpandButton(ImageView expandButton, boolean isExpanded) {
@@ -280,16 +280,26 @@ class CommentMultiLevelRecyclerViewAdapter extends MultiLevelAdapter {
     }
 
     class CommentViewHolder extends RecyclerView.ViewHolder {
-        @BindView(R.id.author_text_view_item_post_comment) TextView authorTextView;
-        @BindView(R.id.comment_time_text_view_item_post_comment) TextView commentTimeTextView;
-        @BindView(R.id.comment_markdown_view_item_post_comment) MarkwonView commentMarkdownView;
-        @BindView(R.id.plus_button_item_post_comment) ImageView upvoteButton;
-        @BindView(R.id.score_text_view_item_post_comment) TextView scoreTextView;
-        @BindView(R.id.minus_button_item_post_comment) ImageView downvoteButton;
-        @BindView(R.id.expand_button_item_post_comment) ImageView expandButton;
-        @BindView(R.id.load_more_comments_progress_bar) ProgressBar loadMoreCommentsProgressBar;
-        @BindView(R.id.reply_button_item_post_comment) ImageView replyButton;
-        @BindView(R.id.vertical_block_item_post_comment) View verticalBlock;
+        @BindView(R.id.author_text_view_item_post_comment)
+        TextView authorTextView;
+        @BindView(R.id.comment_time_text_view_item_post_comment)
+        TextView commentTimeTextView;
+        @BindView(R.id.comment_markdown_view_item_post_comment)
+        MarkwonView commentMarkdownView;
+        @BindView(R.id.plus_button_item_post_comment)
+        ImageView upvoteButton;
+        @BindView(R.id.score_text_view_item_post_comment)
+        TextView scoreTextView;
+        @BindView(R.id.minus_button_item_post_comment)
+        ImageView downvoteButton;
+        @BindView(R.id.expand_button_item_post_comment)
+        ImageView expandButton;
+        @BindView(R.id.load_more_comments_progress_bar)
+        ProgressBar loadMoreCommentsProgressBar;
+        @BindView(R.id.reply_button_item_post_comment)
+        ImageView replyButton;
+        @BindView(R.id.vertical_block_item_post_comment)
+        View verticalBlock;
 
         CommentViewHolder(View itemView) {
             super(itemView);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java
index c0844122..7faf76fb 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java
@@ -3,6 +3,10 @@ package ml.docilealligator.infinityforreddit;
 import android.support.annotation.NonNull;
 import android.util.Log;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
@@ -10,30 +14,115 @@ import retrofit2.Retrofit;
 
 class FetchComment {
     interface FetchCommentListener {
-        void onFetchCommentSuccess(String response);
-        void onFetchCommentFail();
+        void onFetchCommentSuccess(List<?> commentData,
+                                   String parentId, String commaSeparatedChildren);
+        void onFetchCommentFailed();
+    }
+
+    interface FetchMoreCommentListener {
+        void onFetchMoreCommentSuccess(List<?> commentData);
+        void onFetchMoreCommentFailed();
     }
 
-    static void fetchComment(Retrofit retrofit, String subredditNamePrefixed, String article, String comment,
+    static void fetchComment(Retrofit retrofit, String subredditNamePrefixed, String article,
+                             String comment, Locale locale, boolean isPost, int parentDepth,
                              final FetchCommentListener fetchCommentListener) {
         RedditAPI api = retrofit.create(RedditAPI.class);
-
         Call<String> comments = api.getComments(subredditNamePrefixed, article, comment);
         comments.enqueue(new Callback<String>() {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
                 if(response.isSuccessful()) {
-                    fetchCommentListener.onFetchCommentSuccess(response.body());
+                    ParseComment.parseComment(response.body(), new ArrayList<>(),
+                            locale, isPost, parentDepth,
+                            new ParseComment.ParseCommentListener() {
+                                @Override
+                                public void onParseCommentSuccess(List<?> commentData,
+                                                                  String parentId, String commaSeparatedChildren) {
+                                    fetchCommentListener.onFetchCommentSuccess(commentData, parentId,
+                                            commaSeparatedChildren);
+                                }
+
+                                @Override
+                                public void onParseCommentFailed() {
+                                    Log.i("parse failed", "parse failed");
+                                    fetchCommentListener.onFetchCommentFailed();
+                                }
+                            });
                 } else {
                     Log.i("call failed", response.message());
-                    fetchCommentListener.onFetchCommentFail();
+                    fetchCommentListener.onFetchCommentFailed();
                 }
             }
 
             @Override
             public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
                 Log.i("call failed", t.getMessage());
-                fetchCommentListener.onFetchCommentFail();
+                fetchCommentListener.onFetchCommentFailed();
+            }
+        });
+    }
+
+    static void fetchMoreComment(Retrofit retrofit, String subredditNamePrefixed, String mParentId,
+                                 String children, Locale locale, FetchMoreCommentListener fetchMoreCommentListener) {
+        RedditAPI api = retrofit.create(RedditAPI.class);
+        Call<String> moreChildrenBasicInfo = api.getMoreChildren(mParentId, children);
+        moreChildrenBasicInfo.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, Response<String> response) {
+                if(response.isSuccessful()) {
+                    ParseComment.parseMoreCommentBasicInfo(response.body(), new ParseComment.ParseMoreCommentBasicInfoListener() {
+                        @Override
+                        public void onParseMoreCommentBasicInfoSuccess(String commaSeparatedChildrenId) {
+                            Call<String> moreComments = api.getInfo(subredditNamePrefixed, commaSeparatedChildrenId);
+                            moreComments.enqueue(new Callback<String>() {
+                                @Override
+                                public void onResponse(Call<String> call, Response<String> response) {
+                                    if(response.isSuccessful()) {
+                                        ParseComment.parseMoreComment(response.body(), new ArrayList<>(), locale,
+                                                0, new ParseComment.ParseCommentListener() {
+                                                    @Override
+                                                    public void onParseCommentSuccess(List<?> commentData, String parentId,
+                                                                                      String commaSeparatedChildren) {
+                                                        fetchMoreCommentListener.onFetchMoreCommentSuccess(commentData);
+                                                    }
+
+                                                    @Override
+                                                    public void onParseCommentFailed() {
+                                                        fetchMoreCommentListener.onFetchMoreCommentFailed();
+                                                        Log.i("comment parse failed", "comment parse failed");
+                                                    }
+                                                });
+                                    } else {
+                                        Log.i("more comment failed", response.message());
+                                        fetchMoreCommentListener.onFetchMoreCommentFailed();
+                                    }
+                                }
+
+                                @Override
+                                public void onFailure(Call<String> call, Throwable t) {
+                                    Log.i("more comment failed", t.getMessage());
+                                    fetchMoreCommentListener.onFetchMoreCommentFailed();
+                                }
+                            });
+                        }
+
+                        @Override
+                        public void onParseMoreCommentBasicInfoFailed() {
+                            Log.i("comment parse failed", "comment parse failed");
+                            fetchMoreCommentListener.onFetchMoreCommentFailed();
+                        }
+                    });
+                } else {
+                    Log.i("basic info failed", response.message());
+                    fetchMoreCommentListener.onFetchMoreCommentFailed();
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                Log.i("basic info failed", t.getMessage());
+                fetchMoreCommentListener.onFetchMoreCommentFailed();
             }
         });
     }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ParseComment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ParseComment.java
index 54b4af1d..33b83084 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ParseComment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ParseComment.java
@@ -25,18 +25,18 @@ class ParseComment {
     }
 
     static void parseComment(String response, ArrayList<CommentData> commentData, Locale locale,
-                             boolean isPost, int parentDepth, int childrenStartIndex, ParseCommentListener parseCommentListener) {
+                             boolean isPost, int parentDepth, ParseCommentListener parseCommentListener) {
         try {
             JSONArray childrenArray = new JSONArray(response);
 
             if(isPost) {
-                childrenArray = childrenArray.getJSONObject(childrenStartIndex).getJSONObject(JSONUtils.DATA_KEY).getJSONArray(JSONUtils.CHILDREN_KEY);
+                childrenArray = childrenArray.getJSONObject(1).getJSONObject(JSONUtils.DATA_KEY).getJSONArray(JSONUtils.CHILDREN_KEY);
             } else {
-                childrenArray = childrenArray.getJSONObject(childrenStartIndex).getJSONObject(JSONUtils.DATA_KEY).getJSONArray(JSONUtils.CHILDREN_KEY)
+                childrenArray = childrenArray.getJSONObject(1).getJSONObject(JSONUtils.DATA_KEY).getJSONArray(JSONUtils.CHILDREN_KEY)
                         .getJSONObject(0).getJSONObject(JSONUtils.DATA_KEY).getJSONObject(JSONUtils.REPLIES_KEY)
                         .getJSONObject(JSONUtils.DATA_KEY).getJSONArray(JSONUtils.CHILDREN_KEY);
             }
-            new ParseCommentAsyncTask(childrenArray, commentData, locale, isPost, parentDepth, childrenStartIndex, parseCommentListener).execute();
+            new ParseCommentAsyncTask(childrenArray, commentData, locale, parentDepth, parseCommentListener).execute();
         } catch (JSONException e) {
             e.printStackTrace();
             Log.i("comment json error", e.getMessage());
@@ -49,10 +49,10 @@ class ParseComment {
     }
 
     static void parseMoreComment(String response, ArrayList<CommentData> commentData, Locale locale,
-                                 boolean isPost, int parentDepth, int childrenStartIndex, ParseCommentListener parseCommentListener) {
+                                 int parentDepth, ParseCommentListener parseCommentListener) {
         try {
             JSONArray childrenArray = new JSONObject(response).getJSONObject(JSONUtils.DATA_KEY).getJSONArray(JSONUtils.CHILDREN_KEY);
-            new ParseCommentAsyncTask(childrenArray, commentData, locale, isPost, parentDepth, childrenStartIndex, parseCommentListener).execute();
+            new ParseCommentAsyncTask(childrenArray, commentData, locale, parentDepth, parseCommentListener).execute();
         } catch (JSONException e) {
             e.printStackTrace();
             Log.i("comment json error", e.getMessage());
@@ -66,23 +66,19 @@ class ParseComment {
         private ArrayList<CommentData> newcommentData;
         private StringBuilder commaSeparatedChildren;
         private Locale locale;
-        private boolean isPost;
         private int parentDepth;
-        private int childrenStartIndex;
         private ParseCommentListener parseCommentListener;
         private boolean parseFailed;
         private String parentId;
 
         ParseCommentAsyncTask(JSONArray comments, ArrayList<CommentData> commentData, Locale locale,
-                              boolean isPost, int parentDepth, int childrenStartIndex, ParseCommentListener parseCommentListener){
+                              int parentDepth, ParseCommentListener parseCommentListener){
             this.comments = comments;
             this.commentData = commentData;
             newcommentData = new ArrayList<>();
             commaSeparatedChildren = new StringBuilder();
             this.locale = locale;
-            this.isPost = isPost;
             this.parentDepth = parentDepth;
-            this.childrenStartIndex =  childrenStartIndex;
             parseFailed = false;
             this.parseCommentListener = parseCommentListener;
         }
@@ -93,13 +89,6 @@ class ParseComment {
                 int actualCommentLength;
                 ArrayList<String> children = new ArrayList<>();
 
-                /*if(isPost) {
-                    allComments = comments.getJSONObject(childrenStartIndex).getJSONObject(JSONUtils.DATA_KEY).getJSONArray(JSONUtils.CHILDREN_KEY);
-                } else {
-                    allComments = comments.getJSONObject(childrenStartIndex).getJSONObject(JSONUtils.DATA_KEY).getJSONArray(JSONUtils.CHILDREN_KEY)
-                            .getJSONObject(0).getJSONObject(JSONUtils.DATA_KEY).getJSONObject(JSONUtils.REPLIES_KEY)
-                            .getJSONObject(JSONUtils.DATA_KEY).getJSONArray(JSONUtils.CHILDREN_KEY);
-                }*/
                 if(comments.length() == 0) {
                     return null;
                 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java
index 854a75dd..181700cd 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java
@@ -1,6 +1,5 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.ViewModelProviders;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.ColorFilter;
@@ -19,7 +18,6 @@ import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.CardView;
 import android.support.v7.widget.DividerItemDecoration;
 import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.ImageView;
@@ -38,8 +36,12 @@ import com.bumptech.glide.request.RequestListener;
 import com.bumptech.glide.request.RequestOptions;
 import com.bumptech.glide.request.target.Target;
 import com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar;
+import com.multilevelview.MultiLevelRecyclerView;
 import com.santalu.aspectratioimageview.AspectRatioImageView;
 
+import java.util.ArrayList;
+import java.util.List;
+
 import javax.inject.Inject;
 import javax.inject.Named;
 
@@ -65,6 +67,8 @@ public class ViewPostDetailActivity extends AppCompatActivity {
 
     private Post mPost;
 
+    private String mCommaSeparatedChildren;
+
     @BindView(R.id.coordinator_layout_view_post_detail) CoordinatorLayout mCoordinatorLayout;
     @BindView(R.id.subreddit_icon_name_linear_layout_view_post_detail) LinearLayout mSubredditIconNameLinearLayout;
     @BindView(R.id.subreddit_icon_circle_image_view_view_post_detail) AspectRatioGifImageView mSubredditIconGifImageView;
@@ -91,11 +95,13 @@ public class ViewPostDetailActivity extends AppCompatActivity {
 
     @BindView(R.id.comment_progress_bar_view_post_detail) CircleProgressBar mCommentProgressbar;
     @BindView(R.id.comment_card_view_view_post_detail) CardView mCommentCardView;
-    @BindView(R.id.recycler_view_view_post_detail) RecyclerView mRecyclerView;
+    @BindView(R.id.recycler_view_view_post_detail) MultiLevelRecyclerView mRecyclerView;
 
     @BindView(R.id.no_comment_wrapper_linear_layout_view_post_detail) LinearLayout mNoCommentWrapperLinearLayout;
     @BindView(R.id.no_comment_image_view_view_post_detail) ImageView mNoCommentImageView;
 
+    private CommentMultiLevelRecyclerViewAdapter mAdapter;
+    private LinearLayoutManager mLayoutManager;
     private LoadSubredditIconAsyncTask mLoadSubredditIconAsyncTask;
 
     @Inject @Named("no_oauth")
@@ -208,8 +214,9 @@ public class ViewPostDetailActivity extends AppCompatActivity {
             mCrosspostImageView.setVisibility(View.VISIBLE);
         }
 
+        mLayoutManager = new LinearLayoutManager(this);
         mRecyclerView.setNestedScrollingEnabled(false);
-        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
+        mRecyclerView.setLayoutManager(mLayoutManager);
         mRecyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
 
         mSubredditTextView.setText(mPost.getSubredditNamePrefixed());
@@ -327,9 +334,10 @@ public class ViewPostDetailActivity extends AppCompatActivity {
                 }
                 break;
         }
-        //queryComment();
 
-        CommentAdapter adapter = new CommentAdapter(this, mRetrofit, mOauthRetrofit, mSharedPreferences,
+        fetchComment();
+
+        /*CommentAdapter mAdapter = new CommentAdapter(this, mRetrofit, mOauthRetrofit, mSharedPreferences,
                 mRecyclerView, mPost.getSubredditNamePrefixed(), mPost.getId(), getResources().getConfiguration().locale);
 
         CommentViewModel.Factory factory = new CommentViewModel.Factory(mRetrofit, getResources().getConfiguration().locale,
@@ -337,10 +345,7 @@ public class ViewPostDetailActivity extends AppCompatActivity {
             @Override
             public void hasComment() {
                 mCommentProgressbar.setVisibility(View.GONE);
-                /*mRecyclerView.removeItemClickListeners();
-                mRecyclerView.setToggleItemOnClick(false);
-                mRecyclerView.setAccordion(false);*/
-                mRecyclerView.setAdapter(adapter);
+                mRecyclerView.setAdapter(mAdapter);
                 mCommentCardView.setVisibility(View.VISIBLE);
             }
 
@@ -351,7 +356,7 @@ public class ViewPostDetailActivity extends AppCompatActivity {
         });
 
         CommentViewModel commentViewModel = ViewModelProviders.of(this, factory).get(CommentViewModel.class);
-        commentViewModel.getComments().observe(this, posts -> adapter.submitList(posts));
+        commentViewModel.getComments().observe(this, posts -> mAdapter.submitList(posts));*/
 
 
         mUpvoteButton.setOnClickListener(view -> {
@@ -467,52 +472,59 @@ public class ViewPostDetailActivity extends AppCompatActivity {
         });
     }
 
-    /*private void queryComment() {
+    private void fetchComment() {
         mCommentProgressbar.setVisibility(View.VISIBLE);
         mNoCommentWrapperLinearLayout.setVisibility(View.GONE);
         FetchComment.fetchComment(mRetrofit, mPost.getSubredditNamePrefixed(), mPost.getId(),
-                null, new FetchComment.FetchCommentListener() {
+                null, getResources().getConfiguration().locale, true, 0, new FetchComment.FetchCommentListener() {
                     @Override
-                    public void onFetchCommentSuccess(String response) {
-                        ParseComment.parseComment(response, new ArrayList<CommentData>(),
-                                getResources().getConfiguration().locale, true, 0, 1,
-                                new ParseComment.ParseCommentListener() {
-                                    @Override
-                                    public void onParseCommentSuccess(List<?> commentData,
-                                                                      String parentId, String commaSeparatedChildren) {
-                                        mCommentProgressbar.setVisibility(View.GONE);
-                                        if (commentData.size() > 0) {
-                                            CommentMultiLevelRecyclerViewAdapter adapter = new CommentMultiLevelRecyclerViewAdapter(
-                                                    ViewPostDetailActivity.this, mRetrofit, mOauthRetrofit,
-                                                    mSharedPreferences, (ArrayList<CommentData>) commentData,
-                                                    mRecyclerView, mPost.getSubredditNamePrefixed(),
-                                                    mPost.getId(), getResources().getConfiguration().locale);
-                                            mRecyclerView.removeItemClickListeners();
-                                            mRecyclerView.setToggleItemOnClick(false);
-                                            mRecyclerView.setAccordion(false);
-                                            mRecyclerView.setAdapter(adapter);
-                                            mCommentCardView.setVisibility(View.VISIBLE);
-                                        } else {
-                                            mNoCommentWrapperLinearLayout.setVisibility(View.VISIBLE);
-                                            glide.load(R.drawable.no_comment_indicator).into(mNoCommentImageView);
-                                        }
-                                    }
-
-                                    @Override
-                                    public void onParseCommentFailed() {
-                                        mCommentProgressbar.setVisibility(View.GONE);
-                                        showRetrySnackbar();
-                                    }
-                                });
+                    public void onFetchCommentSuccess(List<?> commentData,
+                                                      String parentId, String commaSeparatedChildren) {
+                        mCommaSeparatedChildren = commaSeparatedChildren;
+                        mCommentProgressbar.setVisibility(View.GONE);
+                        if (commentData.size() > 0) {
+                            mAdapter = new CommentMultiLevelRecyclerViewAdapter(
+                                    ViewPostDetailActivity.this, mRetrofit, mOauthRetrofit,
+                                    mSharedPreferences, (ArrayList<CommentData>) commentData,
+                                    mRecyclerView, mPost.getSubredditNamePrefixed(),
+                                    mPost.getId(), getResources().getConfiguration().locale);
+                            mRecyclerView.removeItemClickListeners();
+                            mRecyclerView.setToggleItemOnClick(false);
+                            mRecyclerView.setAccordion(false);
+                            mRecyclerView.setAdapter(mAdapter);
+                            mCommentCardView.setVisibility(View.VISIBLE);
+
+                            fetchMoreComment();
+                        } else {
+                            mNoCommentWrapperLinearLayout.setVisibility(View.VISIBLE);
+                            glide.load(R.drawable.no_comment_indicator).into(mNoCommentImageView);
+                        }
                     }
 
                     @Override
-                    public void onFetchCommentFail() {
+                    public void onFetchCommentFailed() {
                         mCommentProgressbar.setVisibility(View.GONE);
                         showRetrySnackbar();
                     }
                 });
-    }*/
+    }
+
+    private void fetchMoreComment() {
+        FetchComment.fetchMoreComment(mRetrofit, mPost.getSubredditNamePrefixed(), mPost.getFullName(),
+                mCommaSeparatedChildren, getResources().getConfiguration().locale, new FetchComment.FetchMoreCommentListener() {
+                    @Override
+                    public void onFetchMoreCommentSuccess(List<?> commentData) {
+                        mAdapter.addComments((ArrayList<CommentData>) commentData);
+                    }
+
+                    @Override
+                    public void onFetchMoreCommentFailed() {
+                        Snackbar snackbar = Snackbar.make(mCoordinatorLayout, R.string.load_more_comment_failed, Snackbar.LENGTH_INDEFINITE);
+                        snackbar.setAction(R.string.retry, view -> fetchMoreComment());
+                        snackbar.show();
+                    }
+                });
+    }
 
     private void loadImage() {
         RequestBuilder imageRequestBuilder = glide.load(mPost.getPreviewUrl())
@@ -568,12 +580,7 @@ public class ViewPostDetailActivity extends AppCompatActivity {
 
     private void showRetrySnackbar() {
         Snackbar snackbar = Snackbar.make(mCoordinatorLayout, R.string.load_comment_failed, Snackbar.LENGTH_INDEFINITE);
-        snackbar.setAction(R.string.retry, new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                //queryComment();
-            }
-        });
+        snackbar.setAction(R.string.retry, view -> fetchComment());
         snackbar.show();
     }
 
diff --git a/app/src/main/res/layout/activity_view_post_detail.xml b/app/src/main/res/layout/activity_view_post_detail.xml
index e32ac9ab..103edf40 100644
--- a/app/src/main/res/layout/activity_view_post_detail.xml
+++ b/app/src/main/res/layout/activity_view_post_detail.xml
@@ -293,7 +293,7 @@
                         android:textColor="#000000"
                         android:textSize="18sp" />
 
-                    <android.support.v7.widget.RecyclerView
+                    <com.multilevelview.MultiLevelRecyclerView
                         android:id="@+id/recycler_view_view_post_detail"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content" />
diff --git a/app/src/main/res/layout/item_post_comment.xml b/app/src/main/res/layout/item_comment.xml
index 81748bbd..81748bbd 100644
--- a/app/src/main/res/layout/item_post_comment.xml
+++ b/app/src/main/res/layout/item_comment.xml
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index c42202ca..486fd853 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -15,6 +15,7 @@
 
     <string name="load_data_failed">Cannot load posts</string>
     <string name="load_comment_failed">Error loading comments</string>
+    <string name="load_more_comment_failed">Error loading more comments</string>
     <string name="retry">Retry</string>
     <string name="comments">Comments</string>
     <string name="no_comments_yet">No comments yet. Write a comment?</string>