Android Question How to free up memory?

[Sganga61]

Hi
I need to free memory to show a large number of images

Here follow some samples I try to explain:

For i = 1  To 100
    PROTOCOL_FASE.Bitmap = LoadBitmapSample(Path , filename, 1360dip, 690dip)
Next

With the above code about after 10 load images (same image) the program crash due to end of memory

For i = 1 To 100
       PROTOCOL_FASE.RemoveView
       PANEL_PROTOCOL.addview(PROTOCOL_FASE,0dip,3dip,1360dip,690dip)
       PROTOCOL_FASE.Initialize("")
       PROTOCOL_FASE.Bitmap = LoadBitmapSample(Path, filename, 1360dip, 690dip)
Next

Same problem

For i = 1 To 100
      Dim LIMAGE As Bitmap
      LIMAGE.Initialize(Path, filename)
      PROTOCOL_FASE.Initialize("")
      PROTOCOL_FASE.Bitmap = LIMAGE             
Next

Same problem

There is a way to discard unused images, unload images or free up the memory?
I need to show (sequentially) about 100 images of 500Kb each.
Some suggestion?

 

[Erel]

1. The file size is (mostly) meaningless. The bitmap dimensions matters.
2. Unreferenced bitmaps are released automatically, however it will not happen immediately.
3. There is never a good reason to load 100 large images. You cannot show them at once anyway.

Complicated example that shows an endless number of images: https://www.b4x.com/android/forum/threads/b4x-b4xpages-pleroma-mastodon-client.119426/#content

Simpler example based on BitmapsAsync: https://www.b4x.com/android/forum/threads/b4x-bitmapsasync.119589/

 

[Sganga61]

Thank you Erel.
My examples don't explain very well what I need: I need to show (sequentially 100 images). In the above examples the PROTOCOL_FASE is an imageview.

What is the best solution to show (sequentially and every second) 100 images?

Thanks again

 

[Erel]

1. Nothing special just load the image right before you need to show it.
2. Use B4XImageView from XUI Views.

 

[Sganga61]

But it is exactly what I do.... but after a lot of images I get a memory fail...
I note that after about one minutes the memory is free by Android background service....but I can't wait this time.

 

[Erel]

There isn't enough information to help you.

How are you showing the images? Are you using CLV? Have you implemented lazy loading? It will not work without it.