Custom ProgressBar - Horizontal progress bar with dots

This project provides a horizontal progress bar with dots. 
1. Create a class extends View.

public class DotsProgressBar extends View {
public DotsProgressBar(Context context) {
  super(context);
  init(context);
 }

 public DotsProgressBar(Context context, AttributeSet attrs) {
  super(context, attrs);
  init(context);
 }

 public DotsProgressBar(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init(context);
 }

 private void init(Context context) {
  mRadius = context.getResources().getDimension(R.dimen.circle_indicator_radius);
  // dot fill color
  mPaintFill.setStyle(Style.FILL);
  mPaintFill.setColor(Color.BLACK);
  // dot background color
  mPaint.setStyle(Style.FILL);
  mPaint.setColor(0x33000000);
  start();
 }
}

2. Draw dos in onDraw method

@Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);

  float dX = (widthSize - mDotCount * mRadius * 2 - (mDotCount - 1) * margin) / 2.0f;
  float dY = heightSize / 2;
  for (int i = 0; i < mDotCount; i++) {
   if (i == mIndex) {
    canvas.drawCircle(dX, dY, mRadius, mPaintFill);
   } else {
    canvas.drawCircle(dX, dY, mRadius, mPaint);
   }

   dX += (2 * mRadius + margin);
  }

 }

3. Set dots count
The default cout is 3. You can also set the dots count using setDotsCount(int count) method.

Source Code