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https://www.b4x..png File. WriteMap (Dir As String, FileName As String, Map As Map) Creates a new file and writes the given map. Each key value pair is written as a single line. All values are converted to strings.
link: The file content is: #Sat Jun 16 22:59:43 MESZ 2018 Pos2= The type is defined in Main Process_Globals: Type typProps(bezeichnung As String, preis As
link: OK, I solved it with RandomAccessFile and WriteB4XObject - ReadB4XObject instead File.WriteMap - File.ReadMap
link: It seems that the result from map.Get(sKey) is a string like "" and can not be casted into a custom type. Any idea, what I am doing wrong?

You cannot use File.ReadMap and File.WriteMap because your values are lists not strings. You have to use Serializator (need RandomAccessFile lib) to save the file and retrieve it.. See below code: ' Write map to file Dim ser As B4XSerializator 'you need RandomAccessFile lbrary checked Dim ty
link: If I write the map in a file.txt, after map=File.ReadMap(..., File.txt) How Can I show the the values in CustomListView2 clicking on a key showed in

It will be ALL STRINGS after you save it this way. https://www.b4x..png File. WriteMap (Dir As String, FileName As String, Map As Map) Creates a new file and writes the given map. Each key value pair is written as a single line. All values are converted to strings. <--- !!! Use B4XSerializator to
link: Hello everyone. I've a Map, that will be saved using File.WriteMap Dim m1 As Map = CreateMap("Version": AppVersion, _

This format makes it easy to edit it manually. ' One common usage of File.WriteMap is to save a map of "settings" to a file. 'Reads the file and returns its content as a string. 'Example:<code> 'Dim text As String = Storage.ReadString(Storage.Root, "myfile.txt")</code> Public Sub R

File.WriteMap converts all values to a string and saves one key: string-Value as a pair on each record/line in the file. The List is converted to a string. When read it is still a string. When you log the list and string they look the same. You need to use the B4XSerializator from the internal Ra
link: I was aware that WriteMap create a text file, with list represented using '{}', but I expected that ReadMap do the reverse and reconstruct the list fr
link: This was the solution for my problem. Thank you. I was not aware that WriteMap does not save the map in the right format. Then there is any differen

The comment line is from file.writemap(). It is autmatically saved.

Hi. My problem is to write on disk various Lists, in sequence, on same file. The saving sequence is: File.Delete(InternalWorkDir,FileUndo) File.WriteList(InternalWorkDir,FileUndo,Layers) File.WriteMap(InternalWorkDir,FileUndo,colorMap) b=rvs.ConvertObjectToBytes(layerMap.Size) ' jus

Brilliant! Thanks so much, both Chris2 and Magma. I used Dim UserDir As String = File.DirData("Checkers") for both read and write (obviously :) ) File.Writemap(UserDir, "NmicroCore", Main.checkers) Works perfectly. Saves the data file in AppData\Roaming (see attachment).

When I first launch the application I create a file File.WriteMap(File.DirInternal, ProgName & ".ini", options) On a device with Android below 14, this file could be deleted when clearing the cache and application data. Now it doesn't work. How to delete this file?
link: No. I check after clearing the application data and deleting it If File.Exists(File.DirInternal, ProgName & ".ini")Then ReadIni Else File.

File.WriteMap creates a text file. It will not work with raw bytes. You should use BytesToFile isntead: https://www.b4x./#content

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