radlistview-memory-leak

Native Script demo app to illustrate memory leak of RadListView component

Problem description: Heap memory allocated by RadListView instances is never fully released during garbage collection.

Steps to reproduce memory leak on iOS:

1. Run tns install
2. Run tns build ios --for-device --release
3. Open platforms/ios in XCode
4. Select Product > Profile
5. Choose Allocations
6. Start recording
7. Select All Heap Allocations in the allocations list
8. Navigate between pages Home and Test several times
9. Watch how heap memory allocations increase around 25 MB each time you navigate to Test page (this is expected behaviour, because every time an instance of the page is added to the navigation history stack)
10. On Home page click on Navigate to Test Component and clear history
11. Navigate back to Home page, tap/click on Collect garbage and see that heap allocations do not decrease

If you replace RadListView with ListView in test.component.html the described behaviour changes as follows:

• Heap allocations increase around 1 MB each you navigate from Home to Test
• When you do steps 10 und 11 the garbage collector works as expected

The problem also exists on Android. I tested the above in Android Studio and the result is similar.