Decoding 300px image to Bitmap crashs app

Question

I try to download a image from web and decode it to bitmap. Sometimes it works but most the time app crashs. I know the problem with large images. But these images have only a max dimension of 300 pixel.

My testing device is Samsung S3.

new AsyncTask<Object, Void, Void>(){
    @Override
    protected Void doInBackground(Object[] params) {
        try {
            Connection connection = Jsoup.connect(".." + (String)params[1]);
            Document doc = connection.timeout(30000).get();
            String source = doc.select("..").attr("src");
            source = source.matches("http(|s)://.+") ? source.replaceFirst("http(|s)://", "http://") : "http:" + source;
            bitmap = BitmapFactory.decodeStream(new URL(source).openStream());
        } catch (Exception e) {
            Log.e(TAG, e);
        }
        return null;
    }
}.execute(context, packageName, widgetId);

This code is in the onReceive Method of a AppWidgetProvider class. The widget runs till decoding Bitmap.

The error is different:

• Sometimes I get a OutOfMemoryException (on this time the occupied heap size is only 25-30m),
• sometimes the app does nothing (no error, IDE shows that is connected and in debug mode but no reaction anymore (mybe IntelliJ problem))
• sometimes the app doesnt crash but the bitmap is always null (most of time),
• and sometimes (rare) the app runs without any problems and the heap size grows with each loaded image till more than 60m (I dont test it longer)