<cn.gavinliu.android.lib.shapedimageview.ShapedImageView
  ...
  app:shape_mode="circle"

app:stroke_color="#009688"
  app:stroke_width="3dp" />

<cn.gavinliu.android.lib.shapedimageview.ShapedImageView
  ...
  app:shape_mode="round_rect"
  app:round_radius="20dp"

app:stroke_color="#009688"
  app:stroke_width="3dp" />

image1.setExtension(new CDPathExtension());
  class CDPathExtension implements ShapedImageView.PathExtension {

@Override
  public void onLayout(Path path, int width, int height) {

path.reset();

path.addCircle(width / 2, height / 2, width / 8, Path.Direction.CW);

  
}
 
}

public void setShape(int shapeMode, float radius);
  public void setShapeMode(int shapeMode);
 // SHAPE_MODE_ROUND_RECT | SHAPE_MODE_CIRCLE  public void setShapeRadius(float radius);
  public void setStroke(int strokeColor, float strokeWidth);
  public void setStrokeColor(int strokeColor);
  public void setStrokeWidth(float strokeWidth);