What is the difference between ViewModel and Activity in Android?
An example of an AI chatbot conversation about ViewModel and Activity in Android development.
What is the difference between ViewModel and Activity in Android?
In Android, an Activity represents a single screen with a user interface, while a ViewModel is designed to store and manage UI-related data in a lifecycle-conscious way.
Why should I use ViewModel instead of just keeping data in Activity?
Using ViewModel helps to survive configuration changes like screen rotations, ensuring that your data remains intact without needing to reload it.
Can you give an example of when to use ViewModel?
Sure! If you have a screen that displays user data fetched from a database, using a ViewModel allows you to keep that data available even if the user rotates their device.
Are there any downsides to using ViewModel?
One downside is that ViewModels can hold onto data longer than necessary if not managed properly, potentially leading to memory leaks.
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