Below is code for loading large image from url in android mobile.
public class ImageLoadActivity extends Activity { ImageView mImageView; BitmapWorkTask mBitmapWorkTask; public static final String URL="http://www.iiccentre.org/image/Restaurants.jpg"; public static final String URL2="http://nssdc.gsfc.nasa.gov/planetary/image/cassini_titan_15.jpg"; ProgressDialog mProgressDialog; public static int deviceHeight; public static int deviceWidth; DisplayMetrics dm; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_image_load); displayIntialize(); mImageView=(ImageView)findViewById(R.id.img_loaded); mBitmapWorkTask=new BitmapWorkTask(); mBitmapWorkTask.execute(URL,URL2); } private void displayIntialize(){ dm= new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); deviceHeight=dm.heightPixels; deviceWidth=dm.widthPixels; } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_image_load, menu); return true; } public class BitmapWorkTask extends AsyncTask{ @Override protected void onPreExecute() { super.onPreExecute(); mProgressDialog=new ProgressDialog(ImageLoadActivity.this, ProgressDialog.STYLE_SPINNER); mProgressDialog=ProgressDialog.show(ImageLoadActivity.this, "Please wait", "While image is loading"); mProgressDialog.show(); } @Override protected void onPostExecute(Bitmap result) { // TODO Auto-generated method stub super.onPostExecute(result); if(result!=null){ mImageView.setImageBitmap(result); } if(mProgressDialog!=null){ mProgressDialog.dismiss(); } } @Override protected Bitmap doInBackground(String... params) { Bitmap mBitmap=null; int size=params.length; String urlIs=params[1]; mBitmap=downloadBitmap(urlIs); return mBitmap; } } static Bitmap downloadBitmap(String url) { final AndroidHttpClient client = AndroidHttpClient.newInstance("Android"); final HttpGet getRequest = new HttpGet(url); try { HttpResponse response = client.execute(getRequest); final int statusCode = response.getStatusLine().getStatusCode(); if (statusCode != HttpStatus.SC_OK) { Log.w("ImageDownloader", "Error " + statusCode + " while retrieving bitmap from " + url); return null; } final HttpEntity entity = response.getEntity(); if (entity != null) { InputStream inputStream = null; try { inputStream = entity.getContent(); BufferedInputStream bis = new BufferedInputStream(inputStream); bis.mark(1024 * 1024); final Bitmap bitmap = decodeSampledBitmapFromResource(bis,deviceWidth,deviceHeight); return bitmap; } finally { if (inputStream != null) { inputStream.close(); } entity.consumeContent(); } } } catch (Exception e) { // Could provide a more explicit error message for IOException or IllegalStateException getRequest.abort(); //Log.w("ImageDownloader", "Error while retrieving bitmap from " + url, e.toString()); Log.e("LOG_TAG", "Error while retrieving bitmap from" + url + e.toString()); } finally { if (client != null) { client.close(); } } return null; } public static Bitmap decodeSampledBitmapFromResource(BufferedInputStream inputStream, int reqWidth, int reqHeight) { // First decode with inJustDecodeBounds=true to check dimensions final BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeStream(inputStream, null, options); // Calculate inSampleSize options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight); // Decode bitmap with inSampleSize set options.inJustDecodeBounds = false; try { inputStream.reset(); } catch (IOException e) { e.printStackTrace(); } return BitmapFactory.decodeStream(inputStream, null, options); } public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { // Raw height and width of image final int height = options.outHeight; final int width = options.outWidth; int inSampleSize = 1; if (height > reqHeight || width > reqWidth) { if (width > height) { inSampleSize = Math.round((float) height / (float) reqHeight); } else { inSampleSize = Math.round((float) width / (float) reqWidth); } } return inSampleSize; } }
Here is output:
