SimilarAdapter.java

/*
 *  Copyright 2015 sourcestream GmbH
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package de.sourcestream.movieDB.adapter;


import android.content.Context;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;

import java.util.ArrayList;

import de.sourcestream.movieDB.R;
import de.sourcestream.movieDB.model.SimilarModel;


/**
 * Gallery adapter. Used to load gallery images in the gallery list.
 */
public class SimilarAdapter extends ArrayAdapter<SimilarModel> {
    private ArrayList<SimilarModel> similarList;
    private LayoutInflater vi;
    private int Resource;
    private ViewHolder holder;
    private ImageLoader imageLoader;
    private DisplayImageOptions options;

    public SimilarAdapter(Context context, int resource, ArrayList<SimilarModel> objects) {
        super(context, resource, objects);
        vi = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        Resource = resource;
        similarList = objects;
        imageLoader = ImageLoader.getInstance();
        options = new DisplayImageOptions.Builder()
                // Bitmaps in RGB_565 consume 2 times less memory than in ARGB_8888. Caching images in memory else
                // flicker while toolbar hiding
                .bitmapConfig(Bitmap.Config.RGB_565)
                .imageScaleType(ImageScaleType.EXACTLY)
                .cacheInMemory(true)
                .showImageOnLoading(R.drawable.placeholder_default)
                .showImageForEmptyUri(R.drawable.placeholder_default)
                .showImageOnFail(R.drawable.placeholder_default)
                .cacheOnDisk(true)
                .build();
    }

    /**
     * Get a View that displays the data at the specified position in the data set.
     *
     * @param position    The position of the item within the adapter's data set of the item whose view we want.
     * @param convertView The old view to reuse, if possible. Note: You should check that this view is non-null and of an appropriate type before using.
     * @param parent      The parent that this view will eventually be attached to.
     * @return A View corresponding to the data at the specified position.
     */
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // convert view = design
        View v = convertView;
        if (v == null) {
            holder = new ViewHolder();
            v = vi.inflate(Resource, null);
            holder.title = (TextView) v.findViewById(R.id.title);
            holder.posterPath = (ImageView) v.findViewById(R.id.posterPath);
            holder.releaseDate = (TextView) v.findViewById(R.id.releaseDate);
            v.setTag(holder);
        } else {
            holder = (ViewHolder) v.getTag();
        }


        holder.title.setText(similarList.get(position).getTitle());


        if (similarList.get(position).getReleaseDate() != null)
            holder.releaseDate.setText(similarList.get(position).getReleaseDate());


        // if getPosterPath returns null imageLoader automatically sets default image
        imageLoader.displayImage(similarList.get(position).getPosterPath(), holder.posterPath, options);

        return v;

    }

    /**
     * Defines gallery list row elements.
     */
    static class ViewHolder {
        public TextView title;
        public ImageView posterPath;
        public TextView releaseDate;
    }


}