eachChannel method

void eachChannel(
  1. void callback(
    1. String cid
    )
)

遍历已加入的全部推送组

Implementation

void eachChannel(void Function(String cid) callback) {
  final keys = _channel.keys.toList(); //callback可能有remove操作，因此将key读取出来转换为List后更安全
  for (var key in keys) {
    callback(key);
  }
}