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POshow progressdialog when downloading bitmap
 

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    <p>I want to show a progressbar downloading a bitmap:</p> <pre><code> public static Bitmap getBitmapFromURL(String src) { try { URL url = new URL(src); HttpURLConnection connection = (HttpURLConnection) url .openConnection(); connection.setDoInput(true); connection.connect(); InputStream input = connection.getInputStream(); int fileLength = connection.getContentLength(); // download the file byte data[] = new byte[1024]; long total = 0; int count; while ((count = input.read(data)) != -1) { total += count; // publishing the progress.... progressDialog.setProgress((int) (total * 100 / fileLength)); Log.i("progre+ss", (int) (total * 100 / fileLength) + " "); } Bitmap myBitmap = BitmapFactory.decodeStream(input); return myBitmap; } catch (IOException e) { e.printStackTrace(); return null; } } </code></pre> <p>which is initialised with:</p> <pre><code> private void openprogresdialog() { // TODO Auto-generated method stub progressDialog = new ProgressDialog(PrMapGen.this); progressDialog.setMessage("Generating File..."); progressDialog.setCancelable(false); progressDialog.setIndeterminate(false); progressDialog.setMax(100); progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); progressDialog.show(); new Thread() { public void run() { try { generatePrMap(DataArray, getIntent().getExtras().getString("project")); } catch (Exception e) { } progressDialog.dismiss(); projdata.close(); finish(); } }.start(); } </code></pre> <p>My problem is the following:</p> <p>when I use the while loop to update the progressbar, no image is returned, when I delete the while loop the bitmap is returned successfuly.</p> <p>Why???</p> <p>thanks in advance</p>
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