How do I parse a byte array removing all non-ASCII bytes?

Question

I'm trying to log a bluetooth connection in an Android app (non-malicious, it's logging diagnostics). However, the transmissions and responses are in byte arrays and contain non-ASCII bytes. Trying to log the raw byte array gives about 20 spaces between every other character.

How can I remove all non-ASCII bytes?

hmakholm left over Monica · Accepted Answer · 2011-08-17 00:15:06Z

2

Iterate through the byte array and append each byte that is in the ASCII range to a StringBuilder. Remember to cast them to char such that you get append(char) rather than append(int).

answered Aug 17, 2011 at 0:15

hmakholm left over Monica

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President James K. Polk · Accepted Answer · 2011-08-17 00:17:03Z

0

Since you are bothering to log the data at all perhaps you should log the hex-encoding of the data. That way you'll preserve all the information present. If you really want to see only the ASCII characters you can post-process the log information to give you an ASCII view of it when you want.

answered Aug 17, 2011 at 0:17

President James K. Polk

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1 Comment

John Over a year ago

What it is. That's the deeper question. However, since this is on a phone, I can't exactly do much post-processing. I'm most likely not going to have access to the machines where the data is viewed.

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