How to create CircleDrawable in Android

 public class CircleDrawable extends Drawable { 
   float width; 
   float height; 
   Paint mPaint; 
   RectF mRectf; 
   Paint mPaintR; 
   public CircleDrawable(float width, float height, int color) { 
     this.width = width; 
     this.height = height; 
     mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 
     mPaint.setColor(color); 
     mPaint.setStyle(Paint.Style.FILL); 
     mPaintR = new Paint(Paint.ANTI_ALIAS_FLAG); 
     mPaintR.setColor(Color.RED); 
     mPaintR.setStyle(Paint.Style.STROKE); 
     mPaintR.setStrokeWidth(10f); 
     mRectf = new RectF(0, 0, width, height); 
     // mRectf.offset((getMinimumWidth() - width) / 2, (getMinimumHeight() - height) / 2); 
   } 
   @Override 
   public void draw(Canvas canvas) { 
     // canvas.drawRect(mRectf, mPaintR); 
     canvas.drawCircle(mRectf.centerX(), mRectf.centerY(), width / 2, mPaint); 
   } 
   @Override 
   public void setAlpha(int alpha) { 
   } 
   @Override 
   public void setColorFilter(ColorFilter cf) { 
   } 
   @Override 
   public int getOpacity() { 
     return 0; 
   } 
 }