Caching images and displaying

Question

Hello Am facing a particular problem in which I need to download images and display them onto a ListView corresponding to their particular TextView\'s

Answer 1

Please try this with universal image loader

public class DetailsListViewAdapter extends ArrayAdapter{
    private Context context;
    private List detailList;
    DisplayImageOptions options;
    public ImageLoader imageLoader;

    public DetailsListViewAdapter(Context context, int textViewResourceId,List detailList) {
        super(context, textViewResourceId,detailList);
        this.detailList = detailList;
        this.context = context;
        imageLoader = ImageLoader.getInstance();
        imageLoader.init(ImageLoaderConfiguration.createDefault(context));
        options = new DisplayImageOptions.Builder()
        .showImageForEmptyUri(R.drawable.blankimage)
        .showImageOnFail(R.drawable.blankimage)
        .resetViewBeforeLoading()
        .cacheOnDisc()
        .imageScaleType(ImageScaleType.IN_SAMPLE_INT)
        .bitmapConfig(Bitmap.Config.RGB_565)
        .displayer(new FadeInBitmapDisplayer(300))
        .build();
    }

    static class ViewHolder{
        private TextView popupDetails;
        private TextView pubDate;
        private ImageView image;
        private ProgressBar progress;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View v = convertView;
        ViewHolder holder;
        if (v == null) {
            LayoutInflater vi = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            v = vi.inflate(R.layout.details_list_item, null);
            holder = new ViewHolder();
            holder.popupDetails=(TextView)v.findViewById(R.id.detailHeading);
            holder.pubDate = (TextView)v.findViewById(R.id.pubDate);
            holder.image = (ImageView)v.findViewById(R.id.listImg);
            holder.progress = (ProgressBar)v.findViewById(R.id.progressBar);
            v.setTag(holder);
        } else {
            holder = (ViewHolder) v.getTag();
        }
        Entry value = detailList.get(position);
        holder.popupDetails.setText(value.getTitle());
        holder.pubDate.setText(value.getPubDate());
        String url = value.getImageLink();
        try {
            if(url.length() > 5) {
                holder.image.setVisibility(View.VISIBLE);
                loadImage(holder.image,url,holder.progress);
            } else {
                if(url.equals("NO")) {
                    holder.image.setVisibility(View.INVISIBLE);
                } else {
                    holder.image.setVisibility(View.GONE);
                }
            }
        } catch (Exception e) {
            Logger.show(e);
        }
        v.setBackgroundColor(Color.WHITE);
        return v;

    }
    public void loadImage(ImageView imageView, String loadURL,final ProgressBar progress) {
        imageLoader.displayImage(loadURL, imageView, options, new SimpleImageLoadingListener() {
            @Override
            public void onLoadingStarted(String imageUri, View view) {
                progress.setVisibility(View.VISIBLE);
            }

            @Override
            public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
                String message = null;
                switch (failReason) {
                case IO_ERROR:
                    message = "Input/Output error";
                    break;
                case OUT_OF_MEMORY:
                    message = "Out Of Memory error";
                    break;
                case NETWORK_DENIED:
                    message = "Downloads are denied";
                    break;
                case UNSUPPORTED_URI_SCHEME:
                    message = "Unsupported URI scheme";
                    break;
                case UNKNOWN:
                    message = "Unknown error";
                    break;
                }
                Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onLoadingComplete(final String imageUri, View view, final Bitmap loadedImage) {
                progress.setVisibility(View.INVISIBLE);
            }  
        });
    }
}