addSubscription method

String addSubscription(
  1. StreamSubscription subscription, {
  2. String? tag,
})

添加StreamSubscription到队列

Implementation

String addSubscription(StreamSubscription subscription, {String? tag}) {
  // 判断是否使用新标签
  tag = _checkedTag(tag);
  // 缓存请求
  _subscriptions.put(tag, subscription);
  // 返回标签
  return tag;
}