android - Crop square image to circle - Programmatically

Question

i was searching for past one day and i was not successful .

i get the image from API , and i download it to a bitmap file using the following code .

private Bitmap DownloadImage(String URL) 
    {
        Bitmap bitmap = null;
        InputStream in = null;
        try 
        {
            in = OpenHttpConnection(URL);
            bitmap = BitmapFactory.decodeStream(in);
            in.close();
        }
        catch (IOException e1) 
        {
            e1.printStackTrace();
        }
        return bitmap;
    }

    private InputStream OpenHttpConnection(String urlString) throws IOException 
    {
        InputStream in = null;
        int response = -1;

        URL url = new URL(urlString);
        URLConnection conn = url.openConnection();

        if (!(conn instanceof HttpURLConnection))
            throw new IOException("Not an HTTP connection");

        try 
        {
            HttpURLConnection httpConn = (HttpURLConnection) conn;
            httpConn.setAllowUserInteraction(false);
            httpConn.setInstanceFollowRedirects(true);
            httpConn.setRequestMethod("GET");
            httpConn.connect();

            response = httpConn.getResponseCode();
            if (response == HttpURLConnection.HTTP_OK) 
            {
                in = httpConn.getInputStream();
            }
        }
        catch (Exception ex) 
        {
            throw new IOException("Error connecting");
        }
        return in;
    }

And i get the image as a square and i want to crop the four corners and make it to circular image . Is there any possible way to achieve ?

Any related answers are welcomed . Thanks in advance .

Answer 1

Once the bitmap is retrieved RoundedBitmapDrawableFactory can be used to generate a RoundedBitmapDrawable from the v4 Support Library. That Drawable can then be applied to an ImageView or directly drawn to a Canvas.

// Create the RoundedBitmapDrawable.
RoundedBitmapDrawable roundDrawable = RoundedBitmapDrawableFactory.create(getResources(), bitmap);
roundDrawable.setCircular(true);

// Apply it to an ImageView.
ImageView imageView = (ImageView)findViewById(R.id.imageView);
imageView.setImageDrawable(roundDrawable);

// Alternatively, draw it to an canvas (e.g. in onDraw where a Canvas is available).
// setBounds since there's no View handling size and positioning.
roundDrawable.setBounds(left, top, right, bottom);
roundDrawable.draw(canvas);