I wonder if anyone can explain this for me please.
I have an application with uses the (brilliant) Jackcess library to read an MS Access database (which is also used on a Windows machine).
The app runs perfectly when the TargetSDKVersion (in the Manifest) is set to 26.
But this produces a warning message in the UDI: "The recommended value for android:targetSdkVersion is 28 or above (manifest editor). (warning #31)"
If I change the TargetSDKVersion to "28" the app crashes and produces a log message which I don't really understand about NoClassDefFoundError (please see below).
I've produced a sample app which does nothing useful but demonstrates the problem. It simply tries to open the Access DB (NB Layout in this app is just a blank screen).
The app is attached as a .bas file if you wish to try and recreate the problem.
The target device in this case is a Samsung A8-2018 running Android 9.
Huge thanks for any help you're able to give.
My test program:
I have an application with uses the (brilliant) Jackcess library to read an MS Access database (which is also used on a Windows machine).
The app runs perfectly when the TargetSDKVersion (in the Manifest) is set to 26.
But this produces a warning message in the UDI: "The recommended value for android:targetSdkVersion is 28 or above (manifest editor). (warning #31)"
If I change the TargetSDKVersion to "28" the app crashes and produces a log message which I don't really understand about NoClassDefFoundError (please see below).
I've produced a sample app which does nothing useful but demonstrates the problem. It simply tries to open the Access DB (NB Layout in this app is just a blank screen).
The app is attached as a .bas file if you wish to try and recreate the problem.
The target device in this case is a Samsung A8-2018 running Android 9.
Huge thanks for any help you're able to give.
My test program:
Test JACKCESS program:
#Region Project Attributes
#ApplicationLabel: Test
#VersionCode: 1
#VersionName:
'SupportedOrientations possible values: unspecified, landscape or portrait.
#SupportedOrientations: portrait
#CanInstallToExternalStorage: False
#End Region
#Region Activity Attributes
#FullScreen: False
#IncludeTitle: True
#BridgeLogger:False
#End Region
Sub Process_Globals
'These global variables will be declared once when the application starts.
'These variables can be accessed from all modules.
Public const PLFile As String="Roll/COVID-19.mdb"
Public PLDir As String="/storage/3062-6633/PL-Databases"
Public Access As JackcessDatabase
Public ACTable As JackcessTable
Public ACIndex As JackcessIndex
' Public ACcsr As JackcessIndexCursor
End Sub
Sub Globals
'These global variables will be redeclared each time the activity is created.
'These variables can only be accessed from this module.
End Sub
Sub Activity_Create(FirstTime As Boolean)
Activity.LoadLayout("Layout")
Dim rr As RuntimePermissions
rr.CheckAndRequest(rr.PERMISSION_WRITE_EXTERNAL_STORAGE)
Wait For Activity_PermissionResult (Permission As String, Result As Boolean)
Access.open(PLDir & "/" & PLFile)
ACTable.Initialize(Access.GetTable("Electoral_Roll"))
ACIndex.Initialize(ACTable.GetIndex("Android"))
Activity.Finish
End Sub