Hi guys
I do have a problem with writing on an SD-Card.
In the small test program, I defined a storage directory called "GPSDir" to store a huge amount of GPS data.
In the activity I filled a spinner with the two valid values:
Possible values are:
/storage/emulated/0/Android/data/b4a.example3/files/GPSDir
/storage/sdcard1/Android/data/b4a.example3/files/GPSDir
The idea is to select , which dir will be used to store a simple file.
Running the pogram, IT WORKED FINE to store a file into the internal memory,
but failed by using the sd-card.
Error message :
java.io.FileNotFoundException: /storage/sdcard1/Android/data/b4a.example3/files/GPSDir/Test.txt: open failed: EINVAL (Invalid argument)
I am running B4A 8.5 on Anroid7 Client.
Are there different permissions on memory and sdCard ?
Which is the correct way to select, which path will be used ?
Many thanks guenterl
I do have a problem with writing on an SD-Card.
In the small test program, I defined a storage directory called "GPSDir" to store a huge amount of GPS data.
B4X:
Sub Process_Globals
Dim RP As RuntimePermissions
Dim Writer As TextWriter
End Sub
Sub Globals
Dim sp_storage As Spinner
Dim GPSDir = RP.GetSafeDirDefaultExternal("GPSDir") As String
RP.CheckAndRequest("Permission_WRITE_EXTERNAL_STORAGE")
End SubIn the activity I filled a spinner with the two valid values:
B4X:
Sub Activity_Create(FirstTime As Boolean)
sp_storage.Initialize("Select Path")
For Each s As String In RP.GetAllSafeDirsExternal("GPSDir")
sp_storage.Add(s)
Log(s)
Next
End SubPossible values are:
/storage/emulated/0/Android/data/b4a.example3/files/GPSDir
/storage/sdcard1/Android/data/b4a.example3/files/GPSDir
The idea is to select , which dir will be used to store a simple file.
B4X:
Sub sp_Storage_ItemClick (Position As Int, Value As Object)
GPSDir = Value
End Sub
Sub write_data
If File.Exists(GPSDir, "Test.txt") = False Then
Writer.Initialize(File.OpenOutput(GPSDir, "Test.txt", True))
Writer.WriteLine("Textline")
Writer.close
End If
End SubRunning the pogram, IT WORKED FINE to store a file into the internal memory,
but failed by using the sd-card.
Error message :
java.io.FileNotFoundException: /storage/sdcard1/Android/data/b4a.example3/files/GPSDir/Test.txt: open failed: EINVAL (Invalid argument)
I am running B4A 8.5 on Anroid7 Client.
Are there different permissions on memory and sdCard ?
Which is the correct way to select, which path will be used ?
Many thanks guenterl