title: Null pointer exception while decoding bitmap image
body: <p>I am trying to implement the following task:</p>
  
  <ol>
  <li>Take an Image</li>
  <li>Store it in sd card and save the path in a String.</li>
  </ol>
  
  <p>code:</p>
  
  <pre><code>public synchronized void onActivityResult(final int requestCode, int resultCode, final Intent data) 
      {
         if (resultCode == Activity.RESULT_OK) 
         {
             if (requestCode == RESULT_CAMERA_SELECT)
             {
                 try 
                 {
                     photo = null;
                     saveImage();
                 }
                 catch (IOException e) 
                 {
                     e.printStackTrace();
                 }
             }
         }
  
  
  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 &gt; reqHeight || width &gt; reqWidth) {
              if (width &gt; height) {
                  inSampleSize = Math.round((float)height / (float)reqHeight);
              } else {
                  inSampleSize = Math.round((float)width / (float)reqWidth);
              }
          }
          return inSampleSize;
      }
  
  
   public void saveImage() throws IOException
          {
              BitmapFactory.Options options = new BitmapFactory.Options();
              options.inJustDecodeBounds = true;
              FileInputStream is2 = new FileInputStream(new File(myReceipt.filename));
              BitmapFactory.decodeStream(is2 ,null, options);
              // Here is2 get file with width of pic as 2000*1500 etc
  
              options.inSampleSize = calculateInSampleSize(options, 100, 100);
  
              options.inJustDecodeBounds = false;
  
  // PROBLEM EXISTS AT THIS POINT. imageBitmap is returned as null.....
  
  
    Bitmap imageBitmap = BitmapFactory.decodeStream(is2 ,null, options);
              imageBitmap = Bitmap.createScaledBitmap(imageBitmap, 100, 100, false);
  
              try{
  
                          photo = this.createFile(fileName, ".jpg");
                          thumbFileName = photo.getAbsolutePath();
                          Uri uri = Uri.fromFile(photo);
  
                          try {
                                 FileOutputStream out = new FileOutputStream(photo);
                                 imageBitmap.compress(Bitmap.CompressFormat.PNG, 90, out);
                                  } catch (Exception e) {
                                 e.printStackTrace();
                                  }
                                  is2.close();
                                  photo = null;
                                  imageBitmap = null;
                                  imageView.setImageURI(uri);
                              }catch(Exception e)
                              {
                                  displayAlert("Can't create file to take picture!","SD Card Error");
                              }
  
          }
  </code></pre>
  
  <p>According to the code, I am taking an image, then making a thumbimage to show it in an image view and also storing this thumbImage. But error occurs at</p>
  
  <pre><code>  Bitmap imageBitmap = BitmapFactory.decodeStream(is2 ,null, options);
  </code></pre>
  
  <p>it returns null. Can anyone explain what is going on//?</p>