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POAndroid ListView ArrayAdapter
 

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    <p>I'm trying to use a lazylist to load my images and I'm using an array for my datas. But I cant figure out how to implement it into my view holder. Please check my codes below. this line of code</p> <pre><code>imageLoader.DisplayImage(worldpopulationlist.get(position).getFlag(), holder.flag); </code></pre> <p>The method DisplayImage(String, ImageView) in the type ImageLoader is not applicable for the arguments (int, ImageView)</p> <p>ListViewAdapter</p> <pre><code>public class ListViewAdapter extends BaseAdapter { // Declare Variables Context mContext; LayoutInflater inflater; private List&lt;WorldPopulation&gt; worldpopulationlist = null; private ArrayList&lt;WorldPopulation&gt; arraylist; ImageLoader imageLoader; public ListViewAdapter(Context context, List&lt;WorldPopulation&gt; worldpopulationlist) { mContext = context; this.worldpopulationlist = worldpopulationlist; inflater = LayoutInflater.from(mContext); this.arraylist = new ArrayList&lt;WorldPopulation&gt;(); this.arraylist.addAll(worldpopulationlist); imageLoader = new ImageLoader(mContext); } public class ViewHolder { TextView rank; TextView country; TextView population; ImageView flag; } @Override public int getCount() { return worldpopulationlist.size(); } @Override public WorldPopulation getItem(int position) { return worldpopulationlist.get(position); } @Override public long getItemId(int position) { return position; } public View getView(final int position, View view, ViewGroup parent) { final ViewHolder holder; if (view == null) { holder = new ViewHolder(); view = inflater.inflate(R.layout.listview_item, null); holder.rank = (TextView) view.findViewById(R.id.rank); holder.country = (TextView) view.findViewById(R.id.country); holder.population = (TextView) view.findViewById(R.id.population); holder.flag = (ImageView) view.findViewById(R.id.flag); view.setTag(holder); } else { holder = (ViewHolder) view.getTag(); } holder.rank.setText(worldpopulationlist.get(position).getRank()); holder.country.setText(worldpopulationlist.get(position).getCountry()); holder.population.setText(worldpopulationlist.get(position).getPopulation()); //holder.flag.setImageResource(worldpopulationlist.get(position).getFlag()); imageLoader.DisplayImage(worldpopulationlist.get(position).getFlag(), holder.flag); </code></pre> <p>Imageloader</p> <pre><code>public class ImageLoader { MemoryCache memoryCache = new MemoryCache(); private Map&lt;ImageView, String&gt; imageViews = Collections .synchronizedMap(new WeakHashMap&lt;ImageView, String&gt;()); ExecutorService executorService; // Handler to display images in UI thread Handler handler = new Handler(); public ImageLoader(Context context) { executorService = Executors.newFixedThreadPool(5); } final int tempimage = R.drawable.temp_image; public void DisplayImage(String url, ImageView imageView) { imageViews.put(imageView, url); Bitmap bitmap = memoryCache.get(url); if (bitmap != null) imageView.setImageBitmap(bitmap); else { queuePhoto(url, imageView); imageView.setImageResource(tempimage); } } private void queuePhoto(String url, ImageView imageView) { PhotoToLoad p = new PhotoToLoad(url, imageView); executorService.submit(new PhotosLoader(p)); } private Bitmap getBitmap(String url) { File f = new File(url); Bitmap b = decodeFile(f); if (b != null) { return b; } return null; } // Decodes image and scales it to reduce memory consumption private Bitmap decodeFile(File f) { try { // Decode image size BitmapFactory.Options o = new BitmapFactory.Options(); o.inJustDecodeBounds = true; FileInputStream stream1 = new FileInputStream(f); BitmapFactory.decodeStream(stream1, null, o); stream1.close(); // Find the correct scale value. It should be the power of 2. // Recommended Size 512 final int REQUIRED_SIZE = 512; int width_tmp = o.outWidth, height_tmp = o.outHeight; int scale = 1; while (true) { if (width_tmp / 2 &lt; REQUIRED_SIZE || height_tmp / 2 &lt; REQUIRED_SIZE) break; width_tmp /= 2; height_tmp /= 2; scale *= 2; } // Decode with inSampleSize BitmapFactory.Options o2 = new BitmapFactory.Options(); o2.inSampleSize = scale; FileInputStream stream2 = new FileInputStream(f); Bitmap bitmap = BitmapFactory.decodeStream(stream2, null, o2); stream2.close(); return bitmap; } catch (FileNotFoundException e) { } catch (IOException e) { e.printStackTrace(); } return null; } // Task for the queue private class PhotoToLoad { public String url; public ImageView imageView; public PhotoToLoad(String u, ImageView i) { url = u; imageView = i; } } class PhotosLoader implements Runnable { PhotoToLoad photoToLoad; PhotosLoader(PhotoToLoad photoToLoad) { this.photoToLoad = photoToLoad; } @Override public void run() { try { if (imageViewReused(photoToLoad)) return; Bitmap bmp = getBitmap(photoToLoad.url); memoryCache.put(photoToLoad.url, bmp); if (imageViewReused(photoToLoad)) return; BitmapDisplayer bd = new BitmapDisplayer(bmp, photoToLoad); handler.post(bd); } catch (Throwable th) { th.printStackTrace(); } } } boolean imageViewReused(PhotoToLoad photoToLoad) { String tag = imageViews.get(photoToLoad.imageView); if (tag == null || !tag.equals(photoToLoad.url)) return true; return false; } // Used to display bitmap in the UI thread class BitmapDisplayer implements Runnable { Bitmap bitmap; PhotoToLoad photoToLoad; public BitmapDisplayer(Bitmap b, PhotoToLoad p) { bitmap = b; photoToLoad = p; } public void run() { if (imageViewReused(photoToLoad)) return; if (bitmap != null) photoToLoad.imageView.setImageBitmap(bitmap); else photoToLoad.imageView.setImageResource(tempimage); } } public void clearCache() { memoryCache.clear(); } } </code></pre> <p>Worldpopulation</p> <pre><code>public class WorldPopulation { private String rank; private String country; private String population; private int flag; public WorldPopulation(String rank, String country, String population, int flag) { this.rank = rank; this.country = country; this.population = population; this.flag = flag; } public String getRank() { return this.rank; } public String getCountry() { return this.country; } public String getPopulation() { return this.population; } public int getFlag() { return this.flag; } } </code></pre>
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