Question

我只是想在其父活动中显示片段recyclerView。数据在那里，但没有任何东西出现。有什么想法吗？这是PagerAdapter，包含xmls的父类和片段类，以便可以查看所有部分。我希望RV适合在CardView和评论行之间。谢谢你的帮助！

PagerAdapter

select distinct  a.file_number_fk,
       a.received_date,
       b.submitted_date from(
       select file_number_fk,received_date as received_date from fl_file_movement 
where recipient_post_fk='735' 
and file_number_fk='98223')a LEFT JOIN (
select file_number_fk,sent_date as submitted_date from fl_file_movement 
where sent_by_post_fk='735' 
and file_number_fk='98223')b ON a.file_number_fk=b.file_number_fk

Fragment.java

public class DropPagerAdapter extends FragmentPagerAdapter{

final int PAGE_COUNT = 2;
private String tabTitles[] = new String[] { "Comments", "Riples"};
private Context context;

public DropPagerAdapter(FragmentManager fm, Context context) {
    super(fm);
    this.context = context;
}

@Override
public int getCount() {
    return PAGE_COUNT;
}

@Override
public Fragment getItem(int position) {
    return CommentFragment.newInstance(position + 1);
}

@Override
public CharSequence getPageTitle(int position) {
    // Generate title based on item position
    return tabTitles[position];
}
}

片段XML

public class CommentFragment extends Fragment {

public static final String ARG_PAGE = "ARG_PAGE";

private int mPage;
private String mDropObjectId;
private String mAuthorId;
private String mAuthorRank;
private String mAuthorName;
private String mAuthorFacebookId;
private String mDropDescription;
private String mRipleCount;
private String mCommentCount;
private Date mCreatedAt;
private String mTabName;
private RecyclerView mRecyclerView;
private TextView mViewDropEmptyView;
private ArrayList<CommentItem> mCommentList;
private CommentAdapter mCommentAdapter;

public static CommentFragment newInstance(int page) {
    Bundle args = new Bundle();
    args.putInt(ARG_PAGE, page);
    CommentFragment fragment = new CommentFragment();
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mPage = getArguments().getInt(ARG_PAGE);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_comment, container, false);

    mRecyclerView = (RecyclerView) view.findViewById(R.id.comment_recycler_view);
    mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));

    mViewDropEmptyView = (TextView) view.findViewById(R.id.comment_empty_view);

    Intent intent = getActivity().getIntent();
    mDropObjectId = intent.getStringExtra("dropObjectId");
    mAuthorId = intent.getStringExtra("authorId");
    mAuthorRank = intent.getStringExtra("authorRank");
    mAuthorName = intent.getStringExtra("commenterName");
    mAuthorFacebookId = intent.getStringExtra("authorFacebookId");
    mDropDescription = intent.getStringExtra("dropDescription");
    mRipleCount = intent.getStringExtra("ripleCount");
    mCommentCount = intent.getStringExtra("commentCount");
    mCreatedAt = (Date) intent.getSerializableExtra("createdAt");
    mTabName = intent.getStringExtra("mTabName");

    loadCommentsFromParse();

    return view;
}

public void loadCommentsFromParse() {
    final ArrayList<CommentItem> commentList = new ArrayList<>();

    final ParseQuery<ParseObject> query = ParseQuery.getQuery("Comments");
    query.whereEqualTo("dropId", mDropObjectId);
    query.orderByDescending("createdAt");
    query.include("commenterPointer");
//        query.setLimit(25);

    query.findInBackground(new FindCallback<ParseObject>() {
        @Override
        public void done(List<ParseObject> list, ParseException e) {

            if (e != null) {
                Log.d("KEVIN", "error error");

            } else {
                for (int i = 0; i < list.size(); i++) {

                    final CommentItem commentItem = new CommentItem();

                    ParseObject commenterData = (ParseObject) list.get(i).get("commenterPointer");

                    //Commenter data////////////////////////////////////////////////////////////
                    ParseFile profilePicture = (ParseFile) commenterData.get("parseProfilePicture");
                    if (profilePicture != null) {
                        profilePicture.getDataInBackground(new GetDataCallback() {

                            @Override
                            public void done(byte[] data, ParseException e) {
                                if (e == null) {
                                    Bitmap bmp = BitmapFactory.decodeByteArray(data, 0, data.length);
//                                            Bitmap resized = Bitmap.createScaledBitmap(bmp, 100, 100, true);
                                    commentItem.setParseProfilePicture(bmp);
                                    updateRecyclerView(commentList);
                                }
                            }
                        });
                    }


                    //CommenterId
                    commentItem.setCommenterId(commenterData.getObjectId());

                    //Commenter Name
                    commentItem.setCommenterName((String) commenterData.get("displayName"));

                    //Rank
                    commentItem.setCommenterRank((String) commenterData.get("userRank"));

                    //Comment Data/////////////////////////////////////////////////////////////
                    // DropId
                    commentItem.setDropId(list.get(i).getString("dropId"));

                    //Comment
                    commentItem.setCommentText(list.get(i).getString("commentText"));

                    //Date
                    commentItem.setCreatedAt(list.get(i).getCreatedAt());

                    commentList.add(commentItem);
                }

                Log.i("KEVIN", "Comment list size: " + commentList.size());

            }
        }
    });
}

private void updateRecyclerView(ArrayList<CommentItem> comments) {

    if (comments.isEmpty()) {
        mRecyclerView.setVisibility(View.GONE);
        mViewDropEmptyView.setVisibility(View.VISIBLE);
    }
    else {
        mRecyclerView.setVisibility(View.VISIBLE);
        mViewDropEmptyView.setVisibility(View.GONE);
    }

    mCommentAdapter = new CommentAdapter(getActivity(), comments);
    ScaleInAnimationAdapter scaleAdapter = new ScaleInAnimationAdapter(mCommentAdapter);
    mRecyclerView.setAdapter(new AlphaInAnimationAdapter(scaleAdapter));
    mRecyclerView.setAdapter(mCommentAdapter);
}
}

父XML

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
         android:layout_width="match_parent"
         android:layout_height="match_parent">

<android.support.v7.widget.RecyclerView
    android:id="@+id/comment_recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/Primary_Background_Color"
    />

<TextView
    android:id="@+id/comment_empty_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="bottom|center_horizontal"
    android:visibility="visible"
    android:text="Post a comment on this Drop!"
    android:textSize="18sp"
    android:textStyle="italic"
    android:foregroundGravity="center"
    android:paddingBottom="200dp"
    android:textAlignment="center"/>

在父活动中显示片段recyclelerViews

0 个答案: