Android Rounded ImageView

public class UnitConverter {

    public static int dpToPx(int dp) {

        return (int) (dp * Resources.getSystem().getDisplayMetrics().density);

    }

    public static int pxToDp(int px) {

        return (int) (px / Resources.getSystem().getDisplayMetrics().density);

    }

}

public class RoundedImageView extends ImageView {

    public RoundedImageView(Context context) {

        super(context);

    }

    public RoundedImageView(Context context, AttributeSet attrs) {

        super(context, attrs);

    }

    public RoundedImageView(Context context, AttributeSet attrs, int defStyleAttr) {

        super(context, attrs, defStyleAttr);

    }

    private int radiusDp = 0;

    public void setRadiusDp(int radius) {

        this.radiusDp = radius;

    }

    public int getRadiusDp() {

        return radiusDp;

    }

    @Override

    protected void onDraw(Canvas canvas) {

        final Path clipPath = new Path();

        final float radius = UnitConverter.dpToPx(radiusDp);

        final float padding = 0;

        final int w = this.getWidth();

        final int h = this.getHeight();

        clipPath.addRoundRect(new RectF(padding, padding, w - padding, h - padding), radius, radius, Path.Direction.CW);

        canvas.clipPath(clipPath);

        super.onDraw(canvas);

    }

}