Question

In Android webview, you could pass something like this file:///android_asset/myfile.txt or this http://www.mysite.com/t.html and it will get it without a problem. Now if I tried the first url with the file prefix in a reader “FileReader” it will throw an exception that File not found although in WebView it work with no problem (why?)

What I want is to create a function that could take a file or http url and get the content html using the full path “file:/// …” how could I do this without facing the file not found exception ?

Answer 1

Now if i tried the first url with the file prefix in a reader “FileReader” it will throw an exception that file not found although in WebView it work with no problem (why?)

Because “File Reader” does not have an asset named /myfile.txt, presumably. “File Reader” is somebody else’s program, not yours, so file:///android_asset/myfile.txt refers to an asset in that other program, not yours.

What i want is to create a function that could take a file or http url and get the content html using the full path “file:/// …” how could i do this without facing the file not found exception ?

Have an asset named /myfile.txt in your app.

I have not tried using standard Java I/O (e.g., File objects) to read file:///android_asset paths. That might work. If not, use startsWith() to determine if the string begins with file:///android_asset — if it does, trim that off and use the rest with AssetManager to read the asset.