bitmapに画像を落とせない

アドレスはmUrlで取れているものBitmapに変換できないという状況です
getimageからsetimageまでに問題があります。
ご指摘をください

コード
public class ImageLoaderTask extends AsyncTask<ImageView,Void,Bitmap> {
    private static final String USER_AGENT = "WeatherForecasts sample";

    private final Context context;

    private String mUrl;
    private  Bitmap bmap;

    Exception exception;
    ImageView imageview;


    public ImageLoaderTask(Context context,String url) {

        this.context = context;

        mUrl = url;

        Log.d("","@@ mUrl1 = " + mUrl);
    }


    @Override
    protected Bitmap doInBackground(ImageView... params) {
        imageview = params[0];

//      String url = (String) imageview.getTag();

        Log.d("","@@ mUrl2 = " + mUrl);

        try {
            Bitmap map= getImage(context,mUrl);
            Log.d("bmap-iamge","map="+map);
// getImage(context, mUrl);

        } catch (IOException e) {
            exception = e;
        }
        return null;

    }
//
    @Override
    protected void onPostExecute(Bitmap bitmap) {
        bmap=bitmap;
        super.onPostExecute(bmap);

        Log.d("bitmap o","@@ bitmap o = " + bmap);

        if (bitmap != null) {
            imageview.setImageBitmap(bmap);
        }
    }

    private static Bitmap getImage(Context context, String url) throws IOException {


        URL url1 = new URL(url);
        HttpURLConnection con = null;
        try {
            con = (HttpURLConnection) url1.openConnection();
            con.setRequestMethod("GET");
            con.connect();

            int status = con.getResponseCode();

            if (status == HttpURLConnection.HTTP_OK) {
                return BitmapFactory.decodeStream(con.getInputStream());
//                Log.d("pic","pic="+pic);
//                Bitmap bmap2=BitmapFactory.decodeStream(con.getInputStream());
//                Log.d("bmap2","bmap="+bmap2);
            } else {
                return null;
            }
        } catch (Exception e) {
            Log.d("", "exception1 = " + e.toString());
        } finally {
            if (con != null) {
                con.disconnect();
            }
            return null;
        }

    }

}