fromJson method

@override ImageProvider<Object>? fromJson(Map<String, dynamic>? json)

Implementation

@override
ImageProvider? fromJson(Map<String, dynamic>? json) {
  if (json == null) return null;

  switch (json['type']) {
    case 'asset':
      return AssetImage(
        json['assetName'],
        package: json['package'],
      );

    case 'memory':
      return MemoryImage(
        base64Decode(json['bytes']),
        scale: ((json['scale'] ?? 1.0) as num).toDouble(),
      );

    case 'network':
      return NetworkImage(
        json['url'],
        headers: json['headers'],
        scale: ((json['scale'] ?? 1.0) as num).toDouble(),
      );
  }

  throw 'Unsuported_Json_Value';
}