文件放在工程下的 哪个文件夹是可以读取并写入的？ 是可以：报错

//这样获取 assets 下的文件  会报找不到：07-21 02:51:27.069: W/System.err(1252): java.io.FileNotFoundException: /file:/android_asset/version.txt: open failed: ENOENT (No such file or directory)

String path = "file:///android_asset/version.txt";
File file=new File(path);
FileOutputStream fos=new FileOutputStream(file);
FileService.writeFile(fos, newVersion);//newVersion 是要写入的新内容

//------------如果我这样写

InputStream file = getAssets().open("version.txt");
			
FileService.writeFile(file, newVersion);
//他会要求writeFile()方法里面也写 InputStream 但是这样写的话 怎么指定 内容写入的路径？？？

public static void writeFile(InputStream  os,String content)throws Exception 
	{
		  ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
		  outputStream.write(content.getBytes());
		  outputStream.close();
	}