No More Leaks: Detect & Prevent Memory Leak

Transcript

1. No More Leaks: Detect & Prevent Memory Leak Michael Ogundipe Mobile Developer, Learningkav Nicholas Gidudu @syntax007
2. Nicholas Gidudu About Me__ Human Ugandan Snr. Software Developer Builder of impactful tech and people FLUTTERBYTES CONFERENCE 2025
3. Michael Ogundipe About Me__ Human Nigerian Snr. Mobile Developer Never Ending Student of Life FLUTTERBYTES CONFERENCE 2025
4. Expectations Practical techniques to detect, debug, and prevent leaks Why Garbage Collection can’t catch every leak How Dart’s Garbage Collection works How Memory Leaks happen in Flutter What is a Memory Leak FLUTTERBYTES CONFERENCE 2025
5. FLUTTERBYTES CONFERENCE 2025 What is a Memory Leak? A memory leak happens when an app keeps using memory that it no longer needs, and fails to release it.
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7. FLUTTERBYTES CONFERENCE 2025 How Memory Leaks Happen in Flutter • Flutter apps rebuild widgets frequently. • Objects like controllers, streams, and listeners live beyond widget rebuilds. • If not properly disposed, they remain in memory.
8. FLUTTERBYTES CONFERENCE 2025 Leaking Controllers
9. FLUTTERBYTES CONFERENCE 2025 Retained References
10. FLUTTERBYTES CONFERENCE 2025 Streams
11. FLUTTERBYTES CONFERENCE 2025 How Dart’s Garbage Collection Works
12. FLUTTERBYTES CONFERENCE 2025 Why Garbage Collection Can’t Catch Every Leak FLUTTERBYTES CONFERENCE 2025
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17. FLUTTERBYTES CONFERENCE 2025 Detect & Debug
18. FLUTTERBYTES CONFERENCE 2025 Detect & Debug
19. FLUTTERBYTES CONFERENCE 2025 Preventing Memory Leaks • Always call dispose() in Stateful Widgets. • Cancel StreamSubcriptions and remove listeners. • Avoid static/global caches unless necessary. • Use Flutter’s mounted before calling setState() after async calls.
20. Thank You @syntax007 FLUTTERBYTES CONFERENCE 2025