How to get all the file's name from asset folder?

Question

I have copied some folders to the assets folder. I have many folders inside the assets folder. I want to read all the folders name.

What I am doing is

tx.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String path = "file:///android_asset/"; Log.d("Files", "Path: " + path); File directory = new File(path); File[] files = directory.listFiles(); Log.d("Files", "Size: "+ files.length); for (int i = 0; i < files.length; i++) { Log.d("Files", "FileName:" + files[i].getName()); } } });

But the error it is showing is

java.lang.NullPointerException: Attempt to get length of null array at com.example.ashura.browsetest.MainActivity$1.onClick(MainActivity.java:29) at android.view.View.performClick(View.java:5246)

That code will not do. You cannot use the File class as they are no files in assets. Google for assets manager. — greenapps
– greenapps, Commented Mar 5, 2017 at 13:15

CommonsWare · Accepted Answer · 2017-03-05 13:14:31Z

I want to read all the folders name.

Call getAssets() on a Context to get an AssetManager. Call list() on it to retrieve the contents of your assets.

What I am doing is

file:///android_asset/ works for WebView and little else. It does not work with File.

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