getIndex function

int getIndex(
  1. BuildContext context,
  2. double y
)

Implementation

int getIndex(BuildContext context, double y) {
  int index = (y ~/ (screenHeight(context) / 2 / INDEX_WORDS.length))
      .clamp(0, INDEX_WORDS.length - 1);
  print('当前的值：$index');

  return index;
}