B4J Question Nooby trying to figure out serial send

[GarryP64]

I am trying to send a text character followed by a value from a textfield. I can get the value to send but cant figure how to send the preceding character.

astream.Write("h" & txtHLThigh.Text.GetBytes("utf8"))

Thanks

 

[aeric]

How about this?

Dim value As String = "h" & txtHLThigh.Text
astream.Write(value.GetBytes("utf8"))

 

[Erel]

Another option which is relevant when you want to append raw bytes is to use B4XBytesBuilder from B4XCollections. It is similar to StringBuilder but works with arrays of bytes.

 

[Daestrum]

Or maybe (harder to read though)

astream.write(("h" & txtHLThigh.Text).As(String).GetBytes("utf8"))