如何在Android Q (10)中将文件从应用程序的内部存储移动到手机的下载目录？

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

File internalStorageDir = getFilesDir();
File downloadDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);

File sourceFile = new File(internalStorageDir, "your_file_name");
File destinationFile = new File(downloadDir, "your_file_name");

try {
    InputStream inputStream = new FileInputStream(sourceFile);
    OutputStream outputStream = new FileOutputStream(destinationFile);
    byte[] buffer = new byte[1024];
    int length;
    while ((length = inputStream.read(buffer)) > 0) {
        outputStream.write(buffer, 0, length);
    }
    outputStream.flush();
    outputStream.close();
    inputStream.close();
} catch (IOException e) {
    e.printStackTrace();
}