Image Download <url>

gistfile1.txt

public class LoadImageTask extends AsyncTask<String, Void, Bitmap> {

    public LoadImageTask(Listener listener) {

        mListener = listener;
    }

   public interface Listener{

        void onImageLoaded(Bitmap bitmap);
        void onError();
    }

    private LoadImageTask.Listener mListener;
    @Override
    protected Bitmap doInBackground(String... args) {

        try {

            return BitmapFactory.decodeStream((InputStream)new URL(args[0]).getContent());

        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected void onPostExecute(Bitmap bitmap) {

        if (bitmap != null) {

            mListener.onImageLoaded(bitmap);

        } else {

            mListener.onError();
        }
    }
}

gistfile2.txt

//oncreate 
  new LoadImageTask(this).execute(url);
  
  //implements
  
  LoadImageTask.Listener
  
  private void storeImage(Bitmap image) {
       File pictureFile = getOutputMediaFile();
     /*   String file_path = Environment.getExternalStorageDirectory().getAbsolutePath() +
                "/Qrcode_Fast";
        File dir = new File(file_path);
        if(!dir.exists())
            dir.mkdirs();
  try {
      String timeStamp = new SimpleDateFormat("ddMMyyyy_HHmm").format(new Date());

      String mImageName = "MI_" + timeStamp + ".jpg";
      File tempFile = new File(getFilesDir(), mImageName);
      OutputStream outputStream = null;
      outputStream = new FileOutputStream(tempFile);
      image.compress(Bitmap.CompressFormat.JPEG, 70, outputStream);
      outputStream.flush();
      outputStream.close();
  }catch (Exception e)
  {
      e.printStackTrace();
  }*/


        if (pictureFile == null) {
            Log.d("error",
                    "Error creating media file, check storage permissions: ");// e.getMessage());
            return;
        }
        try {
            FileOutputStream fos = new FileOutputStream(pictureFile);
            image.compress(Bitmap.CompressFormat.PNG, 90, fos);
            fos.close();
        } catch (FileNotFoundException e) {
            Log.d("error", "File not found: " + e.getMessage());
        } catch (IOException e) {
            Log.d("error", "Error accessing file: " + e.getMessage());
        }
    }

    private  File getOutputMediaFile(){



       /* File tempFile = new File(getFilesDir(), imageFileName);
        OutputStream outputStream = null;
        outputStream = new FileOutputStream(tempFile);
        bitmap.compress(Bitmap.CompressFormat.JPEG, 40, outputStream);
        outputStream.flush();
        outputStream.close();*/




        // To be safe, you should check that the SDCard is mounted
        // using Environment.getExternalStorageState() before doing this.
        String file_path = Environment.getExternalStorageDirectory().getAbsolutePath() +
                "/Qrcode_Save_Jins";
        File dir = new File(file_path);
        if(!dir.exists())
            dir.mkdirs();

        // This location works best if you want the created images to be shared
        // between applications and persist after your app has been uninstalled.

        // Create the storage directory if it does not exist
        if (! dir.exists()){
            if (! dir.mkdirs()){
                return null;
            }
        }
        // Create a media file name
        String timeStamp = new SimpleDateFormat("ddMMyyyy_HHmm").format(new Date());
        File mediaFile;
        String mImageName="MI_"+ timeStamp +".jpg";
        mediaFile = new File(dir.getPath() + File.separator + mImageName);
        return mediaFile;
    }