Android: How to find the absolute path of the assets folder?
I need to get the absolute path of the assets folder in my app as I want to serve the files within开发者_运维百科 using a webserver and it needs the absolute path. Is this possible?
I would have thought there might be something like this:
String rootDir = getAssets().getRootDirectory();
but there's not.
Any help appreciated, cheers.
Is this possible?
No. There is no "absolute path of the assets folder in [your] app". Assets are stored in the APK file.
In select cases, such as URLs supplied to a WebView
, you can use the special file:///android_asset
base URL to reference files in your assets.
You can always copy files from the assets directory in the APK to a folder on the device, then serve that folder.
As mentioned, Android assets cannot be accessed with absolute paths in the device file system. So whenever you have to provide a filesystem path to a method, you're out of luck.
However, in your case there are additional options:
I want to serve the files within using a webserver and it needs the absolute path.
Needing the absolute path is only true if you want to serve the file as a static file with the default mechanism a webserver provides for that. But webservers are much more flexible: you an map any path in an URL to any data source you can access: files, databases, web resources, Android resources, Android assets. How to do that depends on the web server you use.
For example, you can define for youself that any URL starting with https://example.com/assets/
should be mapped to the assets folder of your Android APK. You can then open the asset as an InputStream
and serve the content to the webserver's client.
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