圆润的ImageView图像从网页加载

我使用这个code有一个圆形的ImageView：

i'm using this code to have a circle imageview :

public class CircularImageView extends ImageView{
    private int borderWidth = 4;
    private int viewWidth;
    private int viewHeight;
    private Bitmap image;
    private Paint paint;
    private Paint paintBorder;
    private BitmapShader shader;

    public CircularImageView(Context context)
    {
        super(context);
        setup();
    }

    public CircularImageView(Context context, AttributeSet attrs)
    {
        super(context, attrs);
        setup();
    }

    public CircularImageView(Context context, AttributeSet attrs, int defStyle)
    {
        super(context, attrs, defStyle);
        setup();
    }

    private void setup()
    {
        // init paint
        paint = new Paint();
        paint.setAntiAlias(true);

        paintBorder = new Paint();
        setBorderColor(Color.WHITE);
        paintBorder.setAntiAlias(true);
        this.setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);
        paintBorder.setShadowLayer(4.0f, 0.0f, 2.0f, Color.BLACK);
    }

    public void setBorderWidth(int borderWidth)
    {
        this.borderWidth = borderWidth;
        this.invalidate();
    }

    public void setBorderColor(int borderColor)
    {
        if (paintBorder != null)
            paintBorder.setColor(borderColor);

        this.invalidate();
    }

    private void loadBitmap()
    {
        BitmapDrawable bitmapDrawable = (BitmapDrawable) this.getDrawable();

        if (bitmapDrawable != null)
            image = bitmapDrawable.getBitmap();
    }

    @SuppressLint("DrawAllocation")
    @Override
    public void onDraw(Canvas canvas)
    {
        // load the bitmap
        loadBitmap();

        // init shader
        if (image != null)
        {
            shader = new BitmapShader(Bitmap.createScaledBitmap(image, canvas.getWidth(), canvas.getHeight(), false), Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
            paint.setShader(shader);
            int circleCenter = viewWidth / 2;

            // circleCenter is the x or y of the view's center
            // radius is the radius in pixels of the cirle to be drawn
            // paint contains the shader that will texture the shape
            canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter + borderWidth - 4.0f, paintBorder);
            canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter - 4.0f, paint);
        }
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    {
        int width = measureWidth(widthMeasureSpec);
        int height = measureHeight(heightMeasureSpec, widthMeasureSpec);

        viewWidth = width - (borderWidth * 2);
        viewHeight = height - (borderWidth * 2);

        setMeasuredDimension(width, height);
    }

    private int measureWidth(int measureSpec)
    {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);

        if (specMode == MeasureSpec.EXACTLY)
        {
            // We were told how big to be
            result = specSize;
        }
        else
        {
            // Measure the text
            result = viewWidth;
        }

        return result;
    }

    private int measureHeight(int measureSpecHeight, int measureSpecWidth)
    {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpecHeight);
        int specSize = MeasureSpec.getSize(measureSpecHeight);

        if (specMode == MeasureSpec.EXACTLY)
        {
            // We were told how big to be
            result = specSize;
        }
        else
        {
// Measure the text (beware: ascent is a negative number)
result = viewHeight;
}
return (result + 2);
}
}

和XML格式：

<com.milionbor.srp.adapter.CircularImageView
        android:id="@+id/img_goroh"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_margin="5dp"
        android:padding="5dp"
        android:src="@drawable/varzeshi" />

它的工作完美的，也是我用这个code，显示从Web图片：

it's working perfect, also i use this code to show a image from the web :

public class DrawableManager {
   private final Map<String, Drawable> drawableMap;

   public DrawableManager() {
       drawableMap = new HashMap<String, Drawable>();
   }

   public Drawable fetchDrawable(String urlString) {
       if (drawableMap.containsKey(urlString)) {
           return drawableMap.get(urlString);
       }

       Log.d(this.getClass().getSimpleName(), "image url:" + urlString);
       try {
           InputStream is = fetch(urlString);
           Drawable drawable = Drawable.createFromStream(is, "src");


           if (drawable != null) {
               drawableMap.put(urlString, drawable);
               Log.d(this.getClass().getSimpleName(), "got a thumbnail drawable: " + drawable.getBounds() + ", "
                       + drawable.getIntrinsicHeight() + "," + drawable.getIntrinsicWidth() + ", "
                       + drawable.getMinimumHeight() + "," + drawable.getMinimumWidth());
           } else {
             Log.w(this.getClass().getSimpleName(), "could not get thumbnail");
           }

           return drawable;
       } catch (MalformedURLException e) {
           Log.e(this.getClass().getSimpleName(), "fetchDrawable failed", e);
           return null;
       } catch (IOException e) {
           Log.e(this.getClass().getSimpleName(), "fetchDrawable failed", e);
           return null;
       }
   }

   public void fetchDrawableOnThread(final String urlString, final ImageView imageView) {
       if (drawableMap.containsKey(urlString)) {
           imageView.setImageDrawable(drawableMap.get(urlString));
       }

       final Handler handler = new Handler() {
           @SuppressWarnings("deprecation")
        @Override
           public void handleMessage(Message message) {
               // imageView.setImageDrawable((Drawable) message.obj);
               imageView.setBackgroundDrawable((Drawable) message.obj);
           }
       };

       Thread thread = new Thread() {
           @Override
           public void run() {
               //TODO : set imageView to a "pending" image
               Drawable drawable = fetchDrawable(urlString);
               Message message = handler.obtainMessage(1, drawable);
               handler.sendMessage(message);
           }
       };
       thread.start();
   }

   private InputStream fetch(String urlString) throws MalformedURLException, IOException {
       DefaultHttpClient httpClient = new DefaultHttpClient();
       HttpGet request = new HttpGet(urlString);
       HttpResponse response = httpClient.execute(request);
       return response.getEntity().getContent();
   }
}

在我的活动：

tasvir = my url...
ImageView iv = (ImageView) findViewById(R.id.imageView1);
DrawableManager dm = new DrawableManager();
dm.fetchDrawableOnThread(tasvir,iv);

这是工作完美了，但是当我要证明我在圈子网络获得图像，它不工作（圈中未显示）。
那么，如何解决这个问题？

it is working perfect too, but when i want to show the image that i get from the web in circle, it is not working (not showing in circle). so how can i fix it?