App crashes when I load image paths from db

Question

I think the problem is the loading of the path and then the scaling of the image. The path is diredtedt to the MediaStore, but is saved as String in the db. Now I want to show a list with little thumbnails of this pichtures.

FATAL EXCEPTION: main java.lang.NullPointerException on the line onLoadFinished(Loader where the image is imChild.setImageBitmap(bmImg);

Here is the code:

    setListAdapter(adapter = new SimpleCursorAdapter(ChildrenActivity.this,
            R.layout.layout_list, null, new String[] {
            Children.COL_CHILD_IMAGE, Children.COL_CHILD_FIRSTNAME,Children.COL_CHILD_NUMBER }, new int[] {R.id.imagechild, R.id.textlist1,
            R.id.textlist2 }, 0));


    final ListView listView = getListView();

    // Load the content
    getLoaderManager().initLoader(0, null, new LoaderManager.LoaderCallbacks<Cursor>() {
        @Override
        public Loader<Cursor> onCreateLoader(int id, Bundle args) {


            return new CursorLoader(ChildrenActivity.this,
                    YounikumProvider.URI_YOUNIKUM, Children.FIELDS, null, null,
                    null);
        }

        @Override
        public void onLoadFinished(Loader<Cursor> loader, Cursor c) {


            if(c.getCount() == 0)
                return;
            String path = "";

            if(c.moveToFirst()) {
                path = c.getString(c.getColumnIndex("childImage"));
                File imgFile = new File(path);

                if(imgFile.exists()) {
                    BitmapFactory.Options options = new BitmapFactory.Options();
                    options.inSampleSize = 2;

                    ImageView imChild = (ImageView) listView.findViewById(R.id.imagechild);
                    Bitmap bmImg = BitmapFactory.decodeFile(imgFile.getAbsolutePath(),options);


                  imChild.setImageBitmap(bmImg);
                }
            }


            ((SimpleCursorAdapter) getListAdapter()).swapCursor(c);
        }

        @Override
        public void onLoaderReset(Loader<Cursor> arg0) {
            ((SimpleCursorAdapter) getListAdapter()).swapCursor(null);
        }
    });


        listView.setDivider(new ColorDrawable(Color.GRAY));
       listView.setDividerHeight(3); // 3 pixels height


    listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
    listView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
        @Override
        public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {

        }

        @Override
        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
           getMenuInflater().inflate(R.menu.dailylog_context, menu);
            return true;
        }

        @Override
        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
            return false;
        }

        @Override
        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {


            if(item.getItemId() == R.id.dailylog_cab_delete) {

                //    SparseBooleanArray checkedDailyLogs = listView.getCheckedItemPositions();
                SparseBooleanArray checkedItems = listView.getCheckedItemPositions();

                final int checkedItemsCount = checkedItems.size();
                for(int i = 0; i < checkedItemsCount; i++) {

                    final int position = checkedItems.keyAt(i);
                    final boolean isChecked = checkedItems.valueAt(i);

                    int adid = (int) adapter.getItemId(position);

                    String selection =  listView.getItemAtPosition(position).toString();



                   Children childNo = DatabaseHandler.getInstance(ChildrenActivity.this).getChildren(adid);


                    if(checkedItems.valueAt(i)) {

                        ConnectivityManager connMgr = (ConnectivityManager)
                                getSystemService(Context.CONNECTIVITY_SERVICE);
                        NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
                        if (networkInfo != null && networkInfo.isConnected()) {

                            //delete hier von Eintrag noch einfügen
                            DatabaseHandler.getInstance(ChildrenActivity.this).removeChildren(adid);
                           webdelete(Long.toString(childNo.child_number));


                            checkedItems = listView.getCheckedItemPositions();
                        }
                    }
                }
            }
            return false;
        }

        @Override
        public void onDestroyActionMode(ActionMode mode) {

        }
    });


    Button clickButton = (Button) findViewById(R.id.buttonAddChildren);
    clickButton.setOnClickListener( new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Intent childrenAddIntent = new Intent(ChildrenActivity.this, ChildrenAddActivity.class);
            startActivity(childrenAddIntent);
        }
    });
}