Android Question Pages not destroyed will cause memory issue?

RishiKumar2210 · Tuesday at 1:47 PM

Hi, I am new to B4XPages. In B4XPages, All pages are open. Will It cause memory issues when we have a large number of datas?

Erel · Tuesday at 2:45 PM

The pages themselves are very lightweight and will not have any impact on the memory usage. If you are loading very large layouts then you might need to load and remove the views based on the program flow, however start with the simplest implementation possible and only optimize if you actually see any issue (in release mode).

RishiKumar2210 · 2024-11-13T05:15:16+0000

Erel said:
The pages themselves are very lightweight and will not have any impact on the memory usage. If you are loading very large layouts then you might need to load and remove the views based on the program flow, however start with the simplest implementation possible and only optimize if you actually see any issue (in release mode).

Thanks for your reply @Erel. The Layout part is ok. However, when I show a large amount of data (For Example, I have a list of names that contains more than 50,000+ names) and then user goes to next screen, then page that contains 50,000+ names are still open. Does it affect memory or performance issues?

Erel · 2024-11-13T06:23:17+0000

Never show a list with 50k items. Use lazy loading instead.
[B4X] [XUI] CustomListView - lazy loading / virtualization

Another option:
[B4X] PreoptimizedCLV - Lazy loading extension for xCustomListView

RishiKumar2210 · 2024-11-13T09:08:09+0000

Erel said:
Never show a list with 50k items. Use lazy loading instead.
[B4X] [XUI] CustomListView - lazy loading / virtualization

Another option:
[B4X] PreoptimizedCLV - Lazy loading extension for xCustomListView

I am displaying those 50000+ records in B4XTable. Does it affect memory or performance issues?

aeric · 2024-11-13T12:01:01+0000

RishiKumar2210 said:
I am displaying those 50000+ records in B4XTable. Does it affect memory or performance issues?

Logically it will take more time to read the records and displaying them. Sure it will consume more memory comparing to reading just 10 records.

aeric · 2024-11-13T12:04:49+0000

RishiKumar2210 said:
B4XTable.

B4XTable uses an in-memory database internally. It is very high performance but if you load a lot of data, it will consuming more memory.

Erel · 2024-11-13T13:15:18+0000

That's true, however it is still considered lazy loading with B4XTable as it doesn't create a view for each item. The memory usage shouldn't be too high.

RishiKumar2210 · 2024-11-13T13:43:51+0000

Erel said:
That's true, however it is still considered lazy loading with B4XTable as it doesn't create a view for each item. The memory usage shouldn't be too high.

Can I able to Close the page or Remove Data from this B4Xtable while the other page is on top and then set data when this page(Page Contains B4XTable with 50000+ records) comes to the top?

Erel · 2024-11-13T15:14:12+0000

Don't worry about it unless you actually get an out of memory exception.

Android Question Pages not destroyed will cause memory issue?

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