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Button1_Click File.WriteString(File.DirInternal, "test.txt", "test") 'just...-files.132731/#post-838166 List of classes or libraries that can be used to access secondary storages: ContentChooser (Phone libray) - allows the user to select a resource or file using external... a folder, your app can read and write from that folder. Doesn't require any permission. Not all... the simpler version of ExternalStorage. Allows the user to choose the place where the file will be saved...

The backslash indicates that the next character should treated "as is" (not as a special ...
link: The backslash indicates that the next character should treated "as is" (not as a special c...
link: string to JSON tree online with Erel's tool at https://www.b4x.com/android/forum/threads...
link: "\" next to the 1. In the code, I am using this command: File.WriteString(File.DirApp...

() As String) Dim bb As B4XBytesBuilder bb.Initialize bb.Append(File.ReadBytes(File...("ascii"), ("" & DateTime.Now).GetBytes("ascii")) File.WriteBytes...
link: () As String) Dim bb As B4XBytesBuilder bb.Initialize bb.Append(File.ReadBytes(File...
link: ) and againt to byte. Finishing saving to new file "ispis.prn" with help File.WriteBytes. For...
link: File.WriteString?...

CSV strings: Dim parser As CSVParser parser.Initialize Dim table As List = parser.Parse(File.ReadString(File.DirAssets, "1.csv"), ",", False) For Each row() As String In table 'work with row Next Dim s As String = parser.GenerateString(table, ",") File.WriteString(File.DirApp, "1.csv", s) ...CSV - comma separated values format. The various StringUtils libraries include methods for loading...

You can find an Example code here: https://www.b4x.com/android/forum/threads/copy-a-file-from-internal-memory-to-sd-card.102705/ NOTE that it is a quite complicated Framework....
link: must I select my file to copy to USB-Stick first manually in Listview (with ExternalStorage Class...
link: Yes, I using TargetSDK 26, 27 , 28 must I select my file to copy to USB-Stick first manually in...
link: Are you using TargetSDK 26 in your App? TargetSDK 26 is recommended to use in your Manifest. Google ...

but if position doesn't exist the complier return me an error Value1 = File.ReadString(File.DirInternal, "Text") Value2 = File.ReadString(File.DirInternal, "Text2"...
link: we just can fish. I dont like fishing. Is it possible initialize to read information before write...
link: Thank you....
link: You can use MakeDir, if the folder already exists it does nothing....

Private Sub IsRunningAsAdmin As Boolean Try Dim f As String = GetEnvironmentVariable("SYSTEMDRIVE", "") & "\isadmin.txt" File.WriteString(f, "", "test") File.Delete(f, "") Return True Catch Return False End Try End Sub A bit hacky but should work. Windows only....

I see in the documentation that DirRootExternal, DirInternal and DirDefaultExternal are labeled as ...
link: No. It is not related to B4A. The file system is read-only for some reason. The best solution...
link: (published), contains all of the following lines which work as intended: File.WriteString(File...
link: related to B4A. The file system is read-only for some reason. The best solution is to avoid using...

, "SDK_INT") If Api < 9 Then 'Old device If File.Exists(File.DirInternal, "__id") Then Return File.ReadString(File.DirInternal, "__id") Else Dim id As Int id = Rnd(0x10000000, 0x7FFFFFFF) File.WriteString(File... Activity_Create(FirstTime As Boolean) Log(GetDeviceId) End Sub Sub GetDeviceId As String Dim r...

Have a look here, post #1, for more explanations. Best regards....
link: Hello Shane, I think DirAssets is read only. You need to write to another location....
link: = txtSayings.text End Sub Sub btnSave_Click File.WriteString (File.DirAssets...