Android Question String length

[gruizelgruis]

Hi all,
Sorry if this has been asked before.
I'm debugging a project I created a view years back. I think I run into a string length problem. My question is:
What is the max lengts of a variabel declared as a string ?
Are there any alternatives ?

Pls advice

 

[OliverA]

I did. It worked. But .... is ..... very .... slow .....

In Release mode?

Im not getting anywhere with this. am I correct to say if the length of the string is Len(senddata) = 603 Then the prefix would be chr(93) & chr(2) & chr(0) & chr(0) ?
please advice I'm lost

Looking at the code I linked to in post #18, as long as Len(senddata) returns a Int32 value, you should just Write(Len(senddata)).

Code snippet from linked code:

Dim name As Byte() = Encoding.UTF8.GetBytes(Path.GetFileName(fileToSend))
Dim bw As New BinaryWriter(stream)
'send the first message which is the file name
bw.Write(name.Length)
bw.Write(name)

Instead of a filename, you just need to sent your UTF8 encoded string, so something like

Dim myTextToSent = "Some really really long string here"
Dim data As Byte() = Encoding.UTF8.GetBytes(myTextToSent)
Dim bw As New BinaryWriter(stream)
'send the first message which is the file name
bw.Write(data.Length)
bw.Write(data)

Note: This is just a code snippet. You still need to set up the "stream" variable/object. I'm not a VB6 programmer, I'm just going by the code provided (linked to in post#18).

 

[Erel]

Why aren't you using AsyncStreamsText ? You just need to make sure that each message ends with an end of line character.

 

[gruizelgruis]

Why aren't you using AsyncStreamsText ? You just need to make sure that each message ends with an end of line character.

I did try asyncstreamstext, It was very slow compared to asyncstreams. Atleast in design mode it was.
I use asyncstreams with prefix now. And it looks good. I'll be testing it this weekend.

@OliverA Thank you for your input. I managed the 4byte the prefix with this code

Public Function LongToByte(ByVal lng As Long) As String
Dim Rest As Byte
Rest = lng \ 255
LongToByte = Chr((lng - (255 * Rest)) - Rest) & Chr(Rest) & Chr(0) & Chr(0)
end function

Its good enough for string lengths upto 65025. I'm sending the sendata just as tekst.

 

[Erel]

I did try asyncstreamstext, It was very slow compared to asyncstreams. Atleast in design mode it was.

You should never test performance in debug mode. AsyncStreamsText is not slow. Though prefix mode is a good solution.