How can you facilitate data sharing among multiple fragments?

taimur tanveer
1 min readAug 21, 2023

Data sharing among multiple fragments can be achieved through the utilization of a SharedViewModel.

How can the implementation of a sharedViewModel be carried out?

Here’s a concise step-by-step explanation of how to implement a shared ViewModel for sharing data between multiple fragments:

1️⃣ Create a new class named SharedViewModel that extends ViewModel.

class SharedViewModel : ViewModel() {
// Define LiveData or MutableLiveData variables to hold shared data.
}

2️⃣ Share the ViewModel between Fragments

class FragmentA : Fragment() {
private val sharedViewModel: SharedViewModel by activityViewModels()
// Now you can access sharedViewModel to share and observe data.
}
class FragmentB : Fragment() {
private val sharedViewModel: SharedViewModel by activityViewModels()
// Access sharedViewModel to interact with shared data.
}

3️⃣ Inside your fragments, use the sharedViewModel instance to set or observe data.

// In FragmentA or Fragment
sharedViewModel.someLiveData.observe(viewLifecycleOwner) { data ->
// Observe and respond to changes in sharedLiveData
}
sharedViewModel.updateData(newValue)

By following these steps, you’ll be able to effectively share data between multiple fragments using a SharedviewModel.

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