如何在我的android项目中获取文件夹的相对路径？

Question

How can I get the relative path of the folders in my project using code?

I've created a new folder in my project and I want its relative path so no matter where the app is, the path will be correct.

I'm trying to do it in my class which extends android.app.Activity .

Perhaps something similar to "get file path from asset" .

Answer 1

Make use of the classpath.

ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
URL url = classLoader.getResource("path/to/folder");
File file = new File(url.toURI());
// ...

Answer 2

Are you looking for the root folder of the application? Then I would use

 String path = getClass().getClassLoader().getResource(".").getPath();

to actually "find out where I am".

Answer 3

File relativeFile = new File(getClass().getResource("/icons/forIcon.png").toURI());
myJFrame.setIconImage(tk.getImage(relativeFile.getAbsolutePath()));

Answer 4

With this I found my project path:

new File("").getAbsolutePath();

this return "c:\\Projects\\SampleProject"

Answer 5

You can check this sample code to understand how you can access the relative path using the java sample code

import java.io.File;

public class MainClass {

  public static void main(String[] args) {

    File relative = new File("html/javafaq/index.html");

    System.out.println("relative: ");
    System.out.println(relative.getName());
    System.out.println(relative.getPath());
  }
}

Here getPath will display the relative path of the file.

Answer 6

In Android, application-level meta data is accessed through the Context reference, which an activity is a descendant of.

For example, you can get the source directory via the getApplicationInfo().sourceDir property. There are methods for other folders as well (assets directory, data dir, database dir, etc.).

Answer 7

Generally we want to add images, txt, doc and etc files inside our Java project and specific folder such as /images. I found in search that in JAVA, we can get path from Root to folder which we specify as,

String myStorageFolder= "/images"; // this is folder name in where I want to store files.

String getImageFolderPath= request.getServletContext().getRealPath(myStorageFolder);

Here, request is object of HttpServletRequest. It will get the whole path from Root to /images folder. You will get output like,

C:\\Users\\STARK\\Workspaces\\MyEclipse.metadata.me_tcat7\\webapps\\JavaProject\\images

Answer 8

With System.getProperty("user.dir") you get the "Base of non-absolute paths" look at

Java Library Description