FlutterChannelJson<T>.fromJson constructor
根据字典初始化
json
字典
Implementation
factory FlutterChannelJson.fromJson(Map<String, dynamic> json) {
return FlutterChannelJson<T>(
code: json['code'] as int,
message: json['message'] as String,
data: json['data'] as T?,
success: json['success'] as bool,
);
}