Configuration Changes, State Preservation and the ViewModel
Why turning the phone sideways can wipe a half-typed form, and the three tools that stop it.
What this unit covers
Unit 3: Android Application Fundamentals
- 1 Android Application ComponentsFour kinds of building block, each one an entry point the system can start on its own. · 11 min
- 2 Intents, Intent Filters and the Android ManifestHow one screen asks for another, and how an app tells the system what it is made of. · 11 min
- 3 The Android Activity LifecycleSix callbacks that tell a screen when it is born, seen, touched, covered, hidden and gone. · 13 min
- 4 Configuration Changes, State Preservation and the ViewModelWhy turning the phone sideways can wipe a half-typed form, and the three tools that stop it. · 12 min