Flutter read all files from asset folder

问题

I have an assets folder in which I have a tab folder and then a list of folders and each folder contains some files

Now I want to read the names of all the folders that are in the tabs folder and all the files that are in each subfolder of the tabs folder, i.e. folders that are named as sound 1, sound 2, sound 3 .....

In simple words, I want to read names of all files and folders that are in my assets folder. Please Anyone help. Thanks,

回答1:

Even if you specified only asset folders in pubspec.yaml, the flutter compiler lists all files from these folders in AssetManifest.json file. All we have to do is read this file:

final manifestJson = await DefaultAssetBundle.of(context).loadString('AssetManifest.json');
final images = json.decode(manifestJson).keys.where((String key) => key.startsWith('assets/images'));

回答2:

The easiest way to do this is, open your pubspec.yaml and in the assets line, change it as given below

assets:
    - assets/*

This will add all the folders and files in the asset folders.

回答3:

in pubspec.yaml file:

add your files with full paths under the assets:

  assets:
    - assets/tabs/sound1/sample1.mp3
    - assets/tabs/sound1/sample2.mp3

and so on, then access them in your project.

来源：https://stackoverflow.com/questions/58740104/flutter-read-all-files-from-asset-folder