Android Question Bluetooth

Cenny · Jun 10, 2015

Hi,

Can somebody help me solving my next problem:
I want to receive a stream of 260 8 bits values in the range from 0-255 from some device via bluetooth.
Bluetooth is expecting the incoming stream to be of type byte (-128 to 127)
I was told to use the Byteconverter library, but I have no idea how.

Cenny

derez · Jun 10, 2015

Code:

Dim bc As ByteConverter
Sbuffer = bc.StringToBytes( data_string ,"UTF8") 
AStream.Write(Sbuffer)

and back:

Code:

Dim st As String
st = BytesToString(buffer, 0, buffer.Length, "UTF8")

Erel · Jun 10, 2015

Note that you can also convert a string to bytes with:
Code:
buffer = data_string.GetBytes("UTF8") 'this is also possible: "some text".GetBytes("UTF8")

Cenny · Jun 10, 2015

derez said: ↑
Code:
Dim bc As ByteConverter
Sbuffer = bc.StringToBytes( data_string ,"UTF8")
AStream.Write(Sbuffer)
and back:
Code:
Dim st As String
st = BytesToString(buffer, 0, buffer.Length, "UTF8")
Click to expand...
Thanks for your reaction, but this is all about strings.
Is there something for numbers as wel?

Erel · Jun 10, 2015

Code:

AStream.Write(Array As Byte(1,2, 250, 200, 0xEA)) 'it will work correctly

Cenny · Jun 10, 2015

Thank you Erel.

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