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Code Issues Packages Projects Releases Wiki Activity

Load parent-level comments using pagination. Only load comments of comments once more.

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This commit is contained in:
Alex Ning 2019-02-22 17:00:09 +08:00
parent a4f664d428
commit 2e72f0d4aa
7 changed files with 85 additions and 55 deletions
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17
app/src/main/java/ml/docilealligator/infinityforreddit/CommentAdapter.java
View File

@ -1,16 +1,10 @@
package ml.docilealligator.infinityforreddit;
import androidx.paging.PagedListAdapter;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.ColorFilter;
import android.net.Uri;
import androidx.annotation.NonNull;
import androidx.browser.customtabs.CustomTabsIntent;
import androidx.core.content.ContextCompat;
import androidx.recyclerview.widget.DiffUtil;
import androidx.recyclerview.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
@ -21,9 +15,16 @@ import android.widget.Toast;
import com.multilevelview.models.RecyclerViewItem;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import androidx.annotation.NonNull;
import androidx.browser.customtabs.CustomTabsIntent;
import androidx.core.content.ContextCompat;
import androidx.paging.PagedListAdapter;
import androidx.recyclerview.widget.DiffUtil;
import androidx.recyclerview.widget.RecyclerView;
import butterknife.BindView;
import butterknife.ButterKnife;
import retrofit2.Retrofit;
@ -128,7 +129,7 @@ public class CommentAdapter extends PagedListAdapter<CommentData, RecyclerView.V
locale, false, commentItem.getDepth(), new FetchComment.FetchCommentListener() {
@Override
public void onFetchCommentSuccess(List<?> commentData,
String parentId, String commaSeparatedChildren) {
String parentId, ArrayList<String> children) {
commentItem.addChildren((List<RecyclerViewItem>) commentData);
((CommentViewHolder) viewHolder).loadMoreCommentsProgressBar
.setVisibility(View.GONE);
@ -140,7 +141,7 @@ public class CommentAdapter extends PagedListAdapter<CommentData, RecyclerView.V
new ParseComment.ParseCommentListener() {
@Override
public void onParseCommentSuccess(List<?> commentData,
String parentId, String commaSeparatedChildren) {
String parentId, String children) {
commentItem.addChildren((List<RecyclerViewItem>) commentData);
((CommentViewHolder) viewHolder).loadMoreCommentsProgressBar
.setVisibility(View.GONE);

20
app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSource.java
View File

@ -1,17 +1,11 @@
package ml.docilealligator.infinityforreddit;
import androidx.lifecycle.MutableLiveData;
import androidx.paging.PageKeyedDataSource;
import androidx.annotation.NonNull;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import androidx.annotation.NonNull;
import androidx.lifecycle.MutableLiveData;
import androidx.paging.PageKeyedDataSource;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
public class CommentDataSource extends PageKeyedDataSource<String, Post> {
@ -69,7 +63,7 @@ public class CommentDataSource extends PageKeyedDataSource<String, Post> {
RedditAPI api = retrofit.create(RedditAPI.class);
Call<String> comments = api.getComments(subredditNamePrefixed, article, comment);
comments.enqueue(new Callback<String>() {
/*comments.enqueue(new Callback<String>() {
@Override
public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
if(response.isSuccessful()) {
@ -104,7 +98,7 @@ public class CommentDataSource extends PageKeyedDataSource<String, Post> {
public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, "Error fetching comment"));
}
});
});*/
}
@Override
@ -126,7 +120,7 @@ public class CommentDataSource extends PageKeyedDataSource<String, Post> {
RedditAPI api = retrofit.create(RedditAPI.class);
Call<String> moreChildrenBasicInfo = api.getMoreChildren(mParentId, params.key);
moreChildrenBasicInfo.enqueue(new Callback<String>() {
/*moreChildrenBasicInfo.enqueue(new Callback<String>() {
@Override
public void onResponse(Call<String> call, Response<String> response) {
if(response.isSuccessful()) {
@ -182,7 +176,7 @@ public class CommentDataSource extends PageKeyedDataSource<String, Post> {
String errorMessage = t == null ? "unknown error" : t.getMessage();
paginationNetworkStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, errorMessage));
}
});
});*/
}
void retry() {

46
app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java
View File

@ -15,12 +15,12 @@ import retrofit2.Retrofit;
class FetchComment {
interface FetchCommentListener {
void onFetchCommentSuccess(List<?> commentData,
String parentId, String commaSeparatedChildren);
String parentId, ArrayList<String> children);
void onFetchCommentFailed();
}
interface FetchMoreCommentListener {
void onFetchMoreCommentSuccess(List<?> commentData);
void onFetchMoreCommentSuccess(List<?> commentData, int childrenStartingIndex);
void onFetchMoreCommentFailed();
}
@ -43,9 +43,9 @@ class FetchComment {
new ParseComment.ParseCommentListener() {
@Override
public void onParseCommentSuccess(List<?> commentData,
String parentId, String commaSeparatedChildren) {
String parentId, ArrayList<String> children) {
fetchCommentListener.onFetchCommentSuccess(commentData, parentId,
commaSeparatedChildren);
children);
}
@Override
@ -69,9 +69,25 @@ class FetchComment {
}
static void fetchMoreComment(Retrofit retrofit, String subredditNamePrefixed, String mParentId,
String children, Locale locale, FetchMoreCommentListener fetchMoreCommentListener) {
ArrayList<String> allChildren, int startingIndex, Locale locale,
FetchMoreCommentListener fetchMoreCommentListener) {
StringBuilder stringBuilder = new StringBuilder();
for(int i = 0; i < 100; i++) {
if(allChildren.size() <= startingIndex + i) {
break;
}
stringBuilder.append(allChildren.get(startingIndex + i)).append(",");
}
if(stringBuilder.length() == 0) {
return;
}
stringBuilder.deleteCharAt(stringBuilder.length() - 1);
//final int finalStartingIndex = startingIndex + 100;
RedditAPI api = retrofit.create(RedditAPI.class);
Call<String> moreChildrenBasicInfo = api.getMoreChildren(mParentId, children);
Call<String> moreChildrenBasicInfo = api.getMoreChildren(mParentId, stringBuilder.toString());
moreChildrenBasicInfo.enqueue(new Callback<String>() {
@Override
public void onResponse(Call<String> call, Response<String> response) {
@ -88,8 +104,11 @@ class FetchComment {
0, new ParseComment.ParseCommentListener() {
@Override
public void onParseCommentSuccess(List<?> commentData, String parentId,
String commaSeparatedChildren) {
fetchMoreCommentListener.onFetchMoreCommentSuccess(commentData);
ArrayList<String> children) {
fetchMoreCommentListener.onFetchMoreCommentSuccess(commentData, startingIndex + 100);
/*fetchMoreComment(retrofit, subredditNamePrefixed,
mParentId, allChildren, finalStartingIndex,
locale, fetchMoreCommentListener);*/
}
@Override
@ -138,12 +157,13 @@ class FetchComment {
fetchComment(retrofit, subredditNamePrefixed, article, comment, locale, isPost, parentDepth,
new FetchCommentListener() {
@Override
public void onFetchCommentSuccess(List<?> commentData, String parentId, String commaSeparatedChildren) {
if(!commaSeparatedChildren.equals("")) {
fetchMoreComment(retrofit, subredditNamePrefixed, parentId, commaSeparatedChildren,
locale, new FetchMoreCommentListener() {
public void onFetchCommentSuccess(List<?> commentData, String parentId, ArrayList<String> children) {
if(children.size() != 0) {
fetchMoreComment(retrofit, subredditNamePrefixed, parentId, children,
0, locale, new FetchMoreCommentListener() {
@Override
public void onFetchMoreCommentSuccess(List<?> moreCommentData) {
public void onFetchMoreCommentSuccess(List<?> moreCommentData,
int childrenStartingIndex) {
((ArrayList<CommentData>)commentData).addAll((ArrayList<CommentData>) moreCommentData);
fetchAllCommentListener.onFetchAllCommentSuccess(commentData);
}

2
app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
View File

@ -147,7 +147,7 @@ public class MainActivity extends AppCompatActivity {
@Override
public void onSearchViewClosed() {
transparentOverlay.setVisibility(View.GONE);
getWindow().setStatusBarColor(getResources().getColor(R.color.colorPrimaryDark));
getWindow().setStatusBarColor(Color.TRANSPARENT);
}
@Override

14
app/src/main/java/ml/docilealligator/infinityforreddit/ParseComment.java
View File

@ -15,7 +15,7 @@ import java.util.Locale;
class ParseComment {
interface ParseCommentListener {
void onParseCommentSuccess(List<?> commentData, String parentId, String commaSeparatedChildren);
void onParseCommentSuccess(List<?> commentData, String parentId, ArrayList<String> children);
void onParseCommentFailed();
}
@ -64,7 +64,7 @@ class ParseComment {
private JSONArray comments;
private ArrayList<CommentData> commentData;
private ArrayList<CommentData> newcommentData;
private StringBuilder commaSeparatedChildren;
private ArrayList<String> children;
private Locale locale;
private int parentDepth;
private ParseCommentListener parseCommentListener;
@ -76,7 +76,7 @@ class ParseComment {
this.comments = comments;
this.commentData = commentData;
newcommentData = new ArrayList<>();
commaSeparatedChildren = new StringBuilder();
children = new ArrayList<>();
this.locale = locale;
this.parentDepth = parentDepth;
parseFailed = false;
@ -87,7 +87,6 @@ class ParseComment {
protected Void doInBackground(Void... voids) {
try {
int actualCommentLength;
ArrayList<String> children = new ArrayList<>();
if(comments.length() == 0) {
return null;
@ -104,11 +103,6 @@ class ParseComment {
children.add(childrenArray.getString(i));
}
for(String c : children) {
commaSeparatedChildren.append(c).append(",");
}
commaSeparatedChildren.deleteCharAt(commaSeparatedChildren.length() - 1);
actualCommentLength = comments.length() - 1;
} else {
actualCommentLength = comments.length();
@ -156,7 +150,7 @@ class ParseComment {
protected void onPostExecute(Void aVoid) {
if(!parseFailed) {
commentData.addAll(newcommentData);
parseCommentListener.onParseCommentSuccess(commentData, parentId, commaSeparatedChildren.toString());
parseCommentListener.onParseCommentSuccess(commentData, parentId, children);
} else {
parseCommentListener.onParseCommentFailed();
}

38
app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java
View File

@ -9,6 +9,7 @@ import android.net.Uri;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewTreeObserver;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
@ -44,6 +45,7 @@ import androidx.browser.customtabs.CustomTabsIntent;
import androidx.cardview.widget.CardView;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.core.content.ContextCompat;
import androidx.core.widget.NestedScrollView;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.LinearLayoutManager;
import butterknife.BindView;
@ -66,9 +68,12 @@ public class ViewPostDetailActivity extends AppCompatActivity {
private Post mPost;
private String mCommaSeparatedChildren;
private boolean isLoadingMoreChildren = false;
private ArrayList<String> children;
private int mChildrenStartingIndex = 0;
@BindView(R.id.coordinator_layout_view_post_detail) CoordinatorLayout mCoordinatorLayout;
@BindView(R.id.nested_scroll_view_view_post_detail_activity) NestedScrollView mNestedScrollView;
@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;
@BindView(R.id.subreddit_text_view_view_post_detail) TextView mSubredditTextView;
@ -446,8 +451,8 @@ public class ViewPostDetailActivity extends AppCompatActivity {
null, getResources().getConfiguration().locale, true, 0, new FetchComment.FetchCommentListener() {
@Override
public void onFetchCommentSuccess(List<?> commentData,
String parentId, String commaSeparatedChildren) {
mCommaSeparatedChildren = commaSeparatedChildren;
String parentId, ArrayList<String> children) {
ViewPostDetailActivity.this.children = children;
mCommentProgressbar.setVisibility(View.GONE);
if (commentData.size() > 0) {
mAdapter = new CommentMultiLevelRecyclerViewAdapter(
@ -461,9 +466,19 @@ public class ViewPostDetailActivity extends AppCompatActivity {
mRecyclerView.setAdapter(mAdapter);
mCommentCardView.setVisibility(View.VISIBLE);
if(!mCommaSeparatedChildren.equals("")) {
fetchMoreComment();
mNestedScrollView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
@Override
public void onScrollChanged() {
if(!isLoadingMoreChildren) {
View view = mNestedScrollView.getChildAt(mNestedScrollView.getChildCount() - 1);
int diff = view.getBottom() - (mNestedScrollView.getHeight() +
mNestedScrollView.getScrollY());
if(diff == 0) {
fetchMoreComment(mChildrenStartingIndex);
}
}
}
});
} else {
mNoCommentWrapperLinearLayout.setVisibility(View.VISIBLE);
glide.load(R.drawable.no_comment_indicator).into(mNoCommentImageView);
@ -478,18 +493,23 @@ public class ViewPostDetailActivity extends AppCompatActivity {
});
}
private void fetchMoreComment() {
private void fetchMoreComment(int startingIndex) {
isLoadingMoreChildren = true;
FetchComment.fetchMoreComment(mRetrofit, mPost.getSubredditNamePrefixed(), mPost.getFullName(),
mCommaSeparatedChildren, getResources().getConfiguration().locale, new FetchComment.FetchMoreCommentListener() {
children, startingIndex, getResources().getConfiguration().locale,
new FetchComment.FetchMoreCommentListener() {
@Override
public void onFetchMoreCommentSuccess(List<?> commentData) {
public void onFetchMoreCommentSuccess(List<?> commentData, int childrenStartingIndex) {
mAdapter.addComments((ArrayList<CommentData>) commentData);
mChildrenStartingIndex = childrenStartingIndex;
isLoadingMoreChildren = false;
}
@Override
public void onFetchMoreCommentFailed() {
isLoadingMoreChildren = false;
Snackbar snackbar = Snackbar.make(mCoordinatorLayout, R.string.load_more_comment_failed, Snackbar.LENGTH_INDEFINITE);
snackbar.setAction(R.string.retry, view -> fetchMoreComment());
snackbar.setAction(R.string.retry, view -> fetchMoreComment(startingIndex));
snackbar.show();
}
});

1
app/src/main/res/layout/activity_view_post_detail.xml
View File

@ -8,6 +8,7 @@
tools:context=".ViewPostDetailActivity">
<androidx.core.widget.NestedScrollView
android:id="@+id/nested_scroll_view_view_post_detail_activity"
android:layout_width="match_parent"
android:layout_height="wrap_content">