FeedAdapter

package com.fatos.fatos_desconhecidos.app.adapter;

import android.content.Context;
import android.os.AsyncTask;
import android.os.Handler;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.UiLifecycleHelper;
import com.facebook.widget.FacebookDialog;
import com.fatos.fatos_desconhecidos.app.R;
import com.fatos.fatos_desconhecidos.app.activity.BaseActivity;
import com.fatos.fatos_desconhecidos.app.core.Communicator;
import com.fatos.fatos_desconhecidos.app.core.DialogInterface;
import com.fatos.fatos_desconhecidos.app.core.model.impl.Feed;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.parse.ParseException;
import com.parse.ParseObject;
import com.parse.ParseQuery;

import java.util.ArrayList;
import java.util.List;

import uk.co.senab.actionbarpulltorefresh.extras.actionbarcompat.PullToRefreshLayout;

public class FeedAdapter extends BaseAdapter {

    ViewHolder mViewHolder;
    private Context mContext;
    private List<Feed> mItems = new ArrayList<Feed>();
    private boolean isLoading;
    private boolean hasNext = false;
    private int page = 0;
    private int displayLimit = 5;

    private NewsAsyncTask asyncTask = null;

    private PullToRefreshLayout pullToRefresh = null;

    List<ParseObject> responseList = null;//esse!

    public FeedAdapter(Context context, LinearLayout relativeLayout) {
        mContext = context;
        asyncTask = new NewsAsyncTask();
        asyncTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, page);
    }

    public PullToRefreshLayout getPullToRefresh() {
        return pullToRefresh;
    }

    public void setPullToRefresh(PullToRefreshLayout pullToRefresh) {
        this.pullToRefresh = pullToRefresh;
    }

    @Override
    public int getCount() {
        return mItems.size();
    }

    @Override
    public Feed getItem(int position) {
        return mItems.get(position);
    }

    @Override
    public long getItemId(int position) {
        //Feed feed = mItems.get(position);
        return position;//feed.getId();
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {

        if (!isLoading && hasNext && position > getCount() - 5) {
            page++;
            asyncTask = new NewsAsyncTask();
            asyncTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, page);
        }

        if (convertView == null) {

            convertView = LayoutInflater.from(mContext).inflate(R.layout.adapter_feed_item, parent, false);

            mViewHolder = new ViewHolder();
            mViewHolder.mTitle = (TextView) convertView.findViewById(R.id.Title);
            mViewHolder.mDescription = (TextView) convertView.findViewById(R.id.Description);
            mViewHolder.mImage = (ImageView) convertView.findViewById(R.id.Image);
            mViewHolder.mShare = (ImageButton) convertView.findViewById(R.id.share_button);
            mViewHolder.mComments = (ImageButton) convertView.findViewById(R.id.comments_button);
            mViewHolder.mLike = (ImageButton) convertView.findViewById(R.id.like_button);

            convertView.setTag(mViewHolder);

        } else {
            mViewHolder = (ViewHolder) convertView.getTag();
        }
        final Feed item = getItem(position);

        mViewHolder.mTitle.setText(item.getTitle());
        mViewHolder.mDescription.setText(item.getDescription());
        ImageLoader.getInstance().displayImage(item.getImageURL(), mViewHolder.mImage);

        View.OnClickListener onClickButton = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Feed item = getItem((Integer) view.getTag());
                ((Communicator) mContext).onItemListViewClick(item.getobjectid(), item.getImageURL(), item.getTitle(), item.getCompleteText(), item.getSiteURL());
            }
        };

        mViewHolder.mTitle.setTag(new Integer(position));
        mViewHolder.mDescription.setTag(new Integer(position));
        mViewHolder.mImage.setTag(new Integer(position));

        mViewHolder.mTitle.setOnClickListener(onClickButton);
        mViewHolder.mDescription.setOnClickListener(onClickButton);
        mViewHolder.mImage.setOnClickListener(onClickButton);

        mViewHolder.mShare.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                ((DialogInterface) mContext).openDialog();
                //dialogInterface.openDialog();
                Handler handler = new Handler();
                handler.postDelayed(new Runnable() {
                    public void run() {
                        try {
                            FacebookDialog shareDialog = new FacebookDialog.ShareDialogBuilder((BaseActivity) mContext)
                                    .setLink(item.getSiteURL())
                                    .build();

                            UiLifecycleHelper uiHelper = new UiLifecycleHelper((BaseActivity) mContext, callback);
                            uiHelper.trackPendingDialogCall(shareDialog.present());
                            ((DialogInterface) mContext).closeDialog();
                        } catch (Exception e) {
                            ((DialogInterface) mContext).closeDialog();
                            Toast.makeText(mContext, mContext.getString(R.string.error_share), Toast.LENGTH_LONG).show();
                        }
                    }
                }, 2000); //Safe delay


            }
        });
        mViewHolder.mComments.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                ((Communicator) mContext).onCommentsClick(item.getobjectid());
            }
        });

        return convertView;
    }

    public void forceReload() {
        page = 0;
        if (isLoading)
            asyncTask.cancel(true);

        asyncTask = new NewsAsyncTask();
        asyncTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, page);
    }

    private Session.StatusCallback callback = new Session.StatusCallback() {
        @Override
        public void call(Session session, SessionState state, Exception exception) {
        }
    };

    private static class ViewHolder {
        private TextView mTitle;
        private TextView mDescription;
        private ImageView mImage;
        private ImageButton mShare;
        private ImageButton mComments;
        private ImageButton mLike;
    }

    private class NewsAsyncTask extends AsyncTask<Integer, Void, ArrayList<Feed>> {
        private int page = 0;
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            isLoading = true;
        }

        @Override
        protected ArrayList<Feed> doInBackground(Integer... integers) {
            page = integers[0];
            ArrayList<Feed> backgroundItems = new ArrayList<Feed>();
            ParseQuery<ParseObject> query = ParseQuery.getQuery("FeedPost");
            query.orderByDescending("createdAt");

//            if(mFilter != null) {
//                query.whereContains("Type", mFilter);
//            }
            query.setLimit(displayLimit);//Aqui o limite da 5
            query.setSkip(page * displayLimit);
            try {
                responseList = query.find();
            } catch (ParseException e) {
                e.printStackTrace();
            }
            for (int i = 0; i < responseList.size(); i++) {
                ParseObject parseObject = responseList.get(i);
                backgroundItems.add(new Feed(parseObject.getObjectId(),
                        parseObject.getString("Title"),
                        parseObject.getString("Description"),
                        parseObject.getString("CompleteText"),
                        parseObject.getString("imageURL"),
                        parseObject.getString("Link_on_Site")));
            }
            return backgroundItems;
        }

        @Override
        protected void onPostExecute(ArrayList<Feed> newsPaginatedArrayList) {
            super.onPostExecute(newsPaginatedArrayList);
            if (isCancelled()) {
                isLoading = false;
                return;
            }
            hasNext = false;

            if (page == 0) {
                mItems.clear();
                notifyDataSetInvalidated();

            }

            if (newsPaginatedArrayList != null && newsPaginatedArrayList.size() != 0) {
                mItems.addAll(newsPaginatedArrayList);
                hasNext = true;
                notifyDataSetChanged();
            }

            if (!hasNext) {
                //mRelativeLayout.setVisibility(View.GONE);
            }
            if (getPullToRefresh() != null)
                getPullToRefresh().setRefreshComplete();
            isLoading = false;
        }
    }

}