How to clear cache in Android ViewModel?

1 year ago
Sophia Anderson
1 minute

In Android, clearing the cache of a ViewModel can be achieved in a few different ways:

  1. By using the clear method in ViewModel, you can manually clear the cache of the ViewModel. Simply call the clear method on the ViewModel whenever you need to clear the cache.
viewModel.clear();
  1. To clear a specific ViewModel cache, use the remove method provided by ViewModelProvider, a class used for creating and obtaining ViewModel instances. First, obtain an instance of ViewModelProvider and then call its remove method.
ViewModelProvider viewModelProvider = new ViewModelProvider(this);
viewModelProvider.remove(ViewModel.class);
  1. Clear the cache in the onDestroy method of Activity or Fragment: You can manually clear the ViewModel cache in the onDestroy method of Activity or Fragment by calling the clear method of ViewModelProvider.
@Override
protected void onDestroy() {
    super.onDestroy();
    viewModelProvider.clear();
}

These methods allow for the selection of one or more ways to clear the cache of the ViewModel based on actual circumstances.

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