Download images from Android

Download images from Android

Method 2:

1.

public byte[] downloadResource(Context context, String url)throws ClientProtocolException, IOException {isStop = false;ByteArrayBuffer buffer = null;HttpGet hp = new HttpGet(url);httpClient = new DefaultHttpClient();String netType = isNetType(context);if (netType != null & netType.equals("cmwap")) {HttpHost proxy = new HttpHost("10.0.0.172", 80);httpClient.getParams().setParameter(ConnRouteParams.DEFAULT_PROXY,proxy);}HttpConnectionParams.setConnectionTimeout(httpClient.getParams(),5 * 1000);HttpConnectionParams.setSoTimeout(httpClient.getParams(), 60 * 1000);HttpResponse response = httpClient.execute(hp);if (response.getStatusLine().getStatusCode() == 200) {inputstream = response.getEntity().getContent();if (inputstream != null) {int i = (int) response.getEntity().getContentLength();buffer = new ByteArrayBuffer(1024);byte[] tmp = new byte[1024];int len;while (((len = inputstream.read(tmp)) != -1)&& (false == isStop)) {buffer.append(tmp, 0, len);}}cancel();}return buffer.toByteArray();}

Call method:

Protected Bitmap doInBackground (WonderfulprogramInfo... params) {Bitmap bitmap = null; try {String urls = Constant. url + params [0]. getWonderfulImgUrl (); boolean isExists = Files. compare (urls); if (isExists = false) {// download image data from the network. Net = new net (); byte [] data = Net. downloadResource (HomeActivity. this, urls); bitmap = BitmapFactory. decodeByteArray (data, 0, data. length); imagesCache. put (urls, bitmap); // Save the downloaded image to the cache Files. saveImage (urls, data);} else {// read Image data byte [] data = Files. readImage (urls); BitmapFactory. options opt = new BitmapFactory. options (); opt. inPreferredConfig = Bitmap. config. RGB_565; opt. inPurgeable = true; opt. ininputtransferable = true; // obtain the resource image // InputStream is = // context. getResources (). openRawResource (resId); // return BitmapFactory. decodeStream (is, null, opt); bitmap = BitmapFactory. decodeByteArray (data, 0, data. length, opt); imagesCache. put (urls, bitmap); // Save the downloaded image to the cache}

Method 2:

Class DownLoadTask extends AsyncTask
 
  
{Private ImageView imageView; private Integer positions; public DownLoadTask (ImageView view, int position) {imageView = view; this. positions = position;} protected Bitmap doInBackground (String... params) {URL url; try {url = new URL (params [0]); InputStream is = url. openStream (); BitmapFactory. options opt = new BitmapFactory. options (); opt. inPreferredConfig = Bitmap. config. RGB_565; opt. inPurgeable = true; opt. ininputretriable = true; // obtain the resource image Bitmap bitmap = BitmapFactory. decodeStream (is, null, opt); HomeActivity. topGalleryBitmap. put (positions, bitmap); return bitmap;} catch (OutOfMemoryError err) {err. printStackTrace ();} catch (MalformedURLException e) {e. printStackTrace ();} catch (IOException e) {e. printStackTrace ();} return null;} protected void onPostExecute (Bitmap result) {super. onPostExecute (result); imageView. setImageBitmap (result );}}