Android Question SimpleMediaManager: 3000+ big photos

[peacemaker]

Hi, All

I'm trying to make my own images gallery to sort my photos and delete garbage since 2012.
Now my code works rather slow, comparing to system Gallery apps.
Tons of photos, 3000+ pcs, sizes were always rising these years, 2....16 Mpix.

Sub CreateGallery
    Log("Gallery creation is started")
    MediaManager.Initialize
    MediaManager.MaxImageSize = 30000000
    PCLV.Initialize(Me, "PCLV", CustomListView1)
    Dim height As Int
    If xui.IsB4J Then height = 200dip Else height = 150dip
    For i = 1 To lstRepresetativeImages.Size Step 4
        Log(i)
        PCLV.AddItem(height, xui.Color_White, CreateMyImageData(i))
    Next
    PCLV.ShowScrollBar = True
    PCLV.ExtraItems = 3
    PCLV.Commit
    Log("Gallery is created")
End Sub

Sub CustomListView1_VisibleRangeChanged (FirstIndex As Int, LastIndex As Int)
    For Each i As Int In PCLV.VisibleRangeChanged(FirstIndex, LastIndex)
        Dim item As CLVItem = CustomListView1.GetRawListItem(i)
        Dim pnl As B4XView = xui.CreatePanel("")
        item.Panel.AddView(pnl, 0, 0, item.Panel.Width, item.Panel.Height)
        Dim data As MyImageData = item.Value
        'Create the item layout
        pnl.LoadLayout("item")
        For x = 0 To 3
            Dim idx As Int = data.IndexOfFirstImage + x
            pnl.GetView(x).GetView(1).Text = idx
            pnl.GetView(x).GetView(0).Tag = idx
            If idx >= lstRepresetativeImages.Size Then
                Exit
            End If
            Dim folder As String = others.GetPath(lstRepresetativeImages.Get(idx))
            Dim fn As String = others.GetFileName(lstRepresetativeImages.Get(idx))
            MediaManager.SetMediaFromFile(pnl.GetView(x).GetView(0), folder, fn, "image/*", Null)    'CreateMap(MediaManager.REQUEST_BACKGROUND: xui.Color_Transparent, MediaManager.REQUEST_CALLBACK: Me))
            'Wait For SMM_MediaReady (Success As Boolean, Media As SMMedia)    'it's very slow if to use Extra REQUEST_CALLBACK
        Next
    Next
    'The purpose of this call is to find panels that are no longer in the views tree and cancel any ongoing request that is no longer relevant.
    'It also happens automatically from time to time but in this case, as many requests are sent frequently, it is better to force it to trim the cache.
    MediaManager.TrimMediaCache
End Sub

Trying to prepare class to get info about any image: https://www.b4x.com/android/forum/threads/lib-class-for-meta-info-about-any-image-file.148745, help is also welcomed...

Questions:

1. MediaManager v.1.13 - does it use some image resizing internally ?
4 pcs per row i'm sure they should be resized. Opening to view bigger is anyway by the path to a fullscreen HugeImageView.

2. Log sometimes shows:

File larger than MaxFileSize 10,871,308

But now only MediaManager.MaxImageSize property exists - is it the same ?

 

[peacemaker]

Oops, it's .b4xlib, so, now both questions are clear.
But anyway scrolling is not so smooth as a system Gallery

    MediaManager.Initialize
    MediaManager.MaxImageSize = 150    'max image size in pixels
    MediaManager.MaxMediaCacheSize = 3000

ImagesLoader.MaxFileSize = 28 * 1024 * 1024