circleimage.java

protected void onDraw(Canvas canvas){
    super.onDraw(canvas);
 
    // init shader
    BitmapShader shader;
    shader = new BitmapShader(originalBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);

    // init paint
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    paint.setShader(shader);

    int circleCenter = width / 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, circleCenter, radus, paint);
}