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.CurrentPosition)) End Sub Private Sub WriteBytes(raf As RandomAccessFile, Data() As Byte) raf...) As Byte 'must be large enough to hold the message payload Dim raf As RandomAccessFile raf.Initialize(buffer, True) WriteBytes(raf, "{""data"":{""title"":""") WriteBytes(raf, Title) WriteBytes(raf, """,""body"":""") WriteBytes(raf, Body) WriteBytes(raf, "...

You should see the required parameters in the IDE or here: http://www.b4x.com/search?query=randomaccessfile.writebytes...

This code is no longer needed. Use File.WriteBytes / ReadBytes. Write an array of bytes to a file and read a file into an array of bytes. Sub BytesToFile (Dir As String, FileName As String, Data() As Byte) Dim out As OutputStream = File.OpenOutput(Dir, FileName, False) out.WriteBytes(Data, 0, Data.Length) out.Close End Sub Sub FileToBytes (Dir As String, FileName As String) As Byte... the RandomAccessFile library Tags: Bytes, Serialization Working with bytes? Check BytesBuilder: https://www...

Dim ser As B4XSerializator 'RandomAccessFile File.WriteBytes(XUI.DefaultFolder, "map.obj", ser.ConvertObjectToBytes(map)) Dim map As Map = ser.ConvertBytesToObject(File.ReadBytes(XUI.DefaultFolder, "map.obj"))...
link: Dim ser As B4XSerializator 'RandomAccessFile File.WriteBytes(XUI.DefaultFolder, "map.obj...

(Job.Response) End If End Sub Private Sub WriteBytes(raf As RandomAccessFile, Data() As Byte) raf.WriteBytes(Data, 0, Data.Length, raf.CurrentPosition) End Sub ErrorMessage: Failed to... Dim buffer(300) As Byte Dim raf As RandomAccessFile raf.Initialize(buffer, True) WriteBytes(raf, "{""id"":""61751246""") WriteBytes(raf, "}") HttpJob.Initialize("Example2...

There are several ways to do it. The simplest is to create a temporary file and write the new bytes with RandomAccessFile.WriteBytes....
link: with RandomAccessFile.WriteBytes. Thank you Erel. My idea is to load the image in a bigger array...

Yes. You can split it and encrypt it. Split the file into multiple smaller files and encrypt each part. Decrypt each part and write it to the unencrypted file with RandomAccessFile.WriteBytes....

RandomAccessFile v1.30 introduces two new methods named: WriteEncryptedObject and... - RandomAccessFile Example of writing an encrypted List to a file: Sub Activity_Create(FirstTime... #" & i) Next 'writing the object Dim raf As RandomAccessFile raf.Initialize(File...
link: It will be possible to extract the string from the compiled APK. Obfuscation can help (with process global variables): https://www.b4...
link: Still new to b4a. Looking at the code from above.... raf.WriteEncryptedObject(list1, "some secret password", raf.CurrentPo...

Don't use ReadObject / WriteObject for fixed records. It is not efficient and there are too many parameters that you don't control. Instead create a simple method that writes your type: Sub WriteRec(rec As REC_TYPE, raf As RandomAccessFile) raf.WriteBytes(rec.Id, 0, rec.Id.Length, raf.CurrentPosition) raf.WriteDouble(rec.Value, raf.CurrentPosition) End Sub You will need to implement...
link: I have a problem creating records of the same size in RandomAccessFile. My objective is to read...

Version : 3.00 A utility class to manipulate a simple List of Map to do basic CRUD. Treat it as some kind of a NoSQL for key-value pairs. It is suitable for small demo if you don't want to use SQL database. Depends on: RandomAccessFile Note: You can use File.ReadBytes and File.WriteBytes to read/write to a file. This b4xlib replaces the class from MinimaList formerly published in... to RandomAccessFile Version 1.06 Added Clone Update Reverse return the resulted object Update...