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android - read file from external storage

I simply cannot find how to get one specified file from the external storage. I know that with getExternalStoragePublicDirectory(), you get the external storage directory but I can't get further. I need some kind of method where you have to give the name of the file and it returns the file. Thanx

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Better than using File.separator is this, which is standard Java:

final File file = new File(Environment.getExternalStorageDirectory()
                          .getAbsolutePath(), filename);

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