getMessage static method
获取本地单条消息
messageId
消息 id
Implementation
static Future<Message?> getMessage(int messageId) async {
Map map = {"messageId": messageId};
String? msgStr = await _channel.invokeMethod(RCMethodKey.GetMessage, map);
if (msgStr == null) {
return null;
}
Message? msg = MessageFactory.instance!.string2Message(msgStr);
return msg;
}