localJsonToModels<T> static method

Future<List<T>> localJsonToModels<T>(String assetPath, T fromJson(Map<String, dynamic>), { bool fromSandbox = false, })

定义一个通用的 JSON 数组解析为对象List的方法

使用示例 void exampleUsage() async { List

Implementation

static Future<List<T>> localJsonToModels<T>(
    String assetPath, T Function(Map<String, dynamic>) fromJson,
    {bool fromSandbox = false}) async {
  String response;
  if (fromSandbox) {
    final file = File(assetPath);
    if (!file.existsSync()) {
      return [];
    }
    response = await file.readAsString();
  } else {
    try {
      response = await rootBundle.loadString(assetPath);
    } catch (e) {
      return [];
    }
  }
  final List<dynamic> data = json.decode(response);
  return data.map((item) => fromJson(item)).toList();
}