Android Studio 一直告诉我工厂类需要一个主体，有什么问题吗？

Question

class WallpaperModel{

  late String photographer;
  late String photographer_url;
  late int photographer_id;
  SrcModel src;

  WallpaperModel({ required this.src, required this.photographer_url,required this.photographer_id, required this.photographer})

  factory WallpaperModel.fromMap(Map<String,dynamic> jsonData){
    return WallpaperModel(src: jsonData['src'],
        photographer_url: jsonData['photographer_url'],
        photographer_id: jsonData['photographer_id'],
        photographer: jsonData['photographer']);
  }
}

我正在尝试将 Pexels API 实现到壁纸应用程序中，但 Android Studio 将工厂类标记为需要主体的错误。可能出了什么问题？

Answer 1

问题是这一行缺少分号;。

  WallpaperModel({ required this.src, required this.photographer_url,required this.photographer_id, required this.photographer});