Flutter：如何获取“资产”目录中所有图像的名称列表？ [英] Flutter: How to get a list of names of all images in 'assets' directory?

问题描述

我需要在列表中显示100张图像。我不想对所有名称进行硬编码。

I have 100 images that I need to display in a list. I don't want to hard code all names.

如何获取图像名称？

我想要这样的代码：

final List<String> imageNames = await WhatEver.getNamesOfImagesInAssetsDirectory();
final widgets = imageNames.map((fileName) => Image.asset('images/${fileName}.png')).toList()

推荐答案

我已经在 StatefullWidget 内部实现了以下功能

I've implemented the function below inside of a StatefullWidget

Future _initImages() async {
  // >> To get paths you need these 2 lines
  final manifestContent = await DefaultAssetBundle.of(context).loadString('AssetManifest.json');

  final Map<String, dynamic> manifestMap = json.decode(manifestContent);
  // >> To get paths you need these 2 lines

  final imagePaths = manifestMap.keys
      .where((String key) => key.contains('images/'))
      .where((String key) => key.contains('.svg'))
      .toList();

  setState(() {
    someImages = imagePaths;
  });
}

AssetManifest.json 包含有关您添加到 pubspec.yaml

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