Java - Android - Accessing the /data/data folder

I'm writing an application to get a person's ID from a game and it is stored in

 /data/data/AppName/shared_prefs/AppName.xml

I was writing a method to access the PlayerPrefs but it according to my program the file doesn't exist.

 private void AccessPlayerPrefs() //TODO: Refactor this method.
 {
     File externalStorage = Environment.getExternalStorageDirectory();
     File internalStorage = Environment.getDataDirectory();
 
     if(externalStorage.canWrite())
     {
         String currentDBPath = "/data/com.outerminds.tubular/shared_prefs/com.outerminds.tubular.xml"; //
         String backupDBPath = "/Video/appname_backup.xml";
         File currentDB = new File(internalStorage, currentDBPath);
         File backupDB = new File(externalStorage, backupDBPath);
 
         if (currentDB.exists())
         {
             try
             {
                 FileChannel src = new FileInputStream(currentDB).getChannel();
                 FileChannel dst = new FileOutputStream(backupDB).getChannel();
                 dst.transferFrom(src, 0, src.size());
                 src.close();
                 dst.close();
             }
             catch (Exception e)
             {
                 AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
                 builder.setMessage(e.getMessage()).setNegativeButton("Okay", null).create().show();
             }
         }
         else
         {
             AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
             builder.setMessage("It doesn't exist.").setNegativeButton("Okay", null).create().show();
         }
     }
     else
     {
         AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
         builder.setMessage("Can't write").setNegativeButton("Okay", null).create().show();
     }
 }

Could anyone help me resolve this issue.