Android Question Out Of Memory on ListView

[Alberto Iglesias]

The ListView Control with a large number of itens WITH bitmaps from photos, got OUT OF MEMORY error.

What´s the best (or correct) way to show a image list from a folder (I got this error after some photos loaded)

lstFiles.AddTwoLinesAndBitmap2( "text1","text2", LoadBitmapSample(imageDir,imageFile,512,512),strFilePath)

Error in this line after some photos:

Downsampling image due to lack of memory: 4
Downsampling image due to lack of memory: 8
Downsampling image due to lack of memory: 16
Downsampling image due to lack of memory: 32
Downsampling image due to lack of memory: 64
java.lang.RuntimeException: Error loading bitmap (OutOfMemoryError)

 

[eurojam]

you can use a scrollview instead and only load the images which are visible in the scrollview (using the ScrollChanged Event) instead of loading all bitmaps at the start of your initialize routine

 

[Alberto Iglesias]

I do that, but when you scrolling, when is loading, a lot of lines, do the same : Out Of Memory

 

[Erel]

The issue is not related to the ListView. Large images require a lot of memory. You should either use smaller dimensions (note that you are missing the dip units) or a more sophisticated solution where only the visible images are loaded.

https://www.b4x.com/android/forum/posts/210230/

Check UlitmateListView. I'm pretty sure that it implements such a solution.

 

[Alberto Iglesias]

Yes... I ´m trying UltimateListView right now, have some little problems, but I think it will work.