Android Question multiple files copy to a user selected folder help

Private Sub btnShare_Click
    Dim provider As FileProvider
    provider.Initialize
    Dim filename As String = "tempImage.jpg"
    Dim f As String = provider.SharedFolder

    Dim bmp As B4XBitmap = ZoomImageView1.ImageView.GetBitmap
    Dim out As OutputStream = File.OpenOutput(f,filename,False)
    bmp.WriteToStream(out,100,"JPEG")
        
    Dim i As Intent
    i.Initialize(i.ACTION_SEND,"")
    i.PutExtra("android.intent.extra.STREAM", provider.GetFileUri(filename))
    i.SetType("image/*")
    i.Flags = 1
    StartActivity(i)

End Sub