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Updated 27 January 2021
Proto Datastore allows us to store custom type data. It uses protocol buffers to store data.
In share preference, we can only save data in key-value. DataStore allows us to store data in key-value pair and in form of object as well.
Proto DataStore is one way of DataStore to save data.
Please check my previous blog for datastore and preferences datastore : Preferences DataStore
We have to create a predefined schema in our project. This schema defines the type of object which we wanna store in Proto DataStore.
Suppose, we wanna save user data. We need to create a .proto file in our project. Lets say User.proto. Directory : app/src/main/proto/
NOTE: After creating User.proto file, please rebuild your android project.
Now, define a class which implements Serializer<T> , where T is the type defined in the proto file. This class will define how to read or write data.
Use createDataStore() function for creating instance of DataStore.
Get user id :
Get user name :
updateData method is used to save data in Proto DataStore.
To learn more about datastore, check following link : DataStore
Hopefully, this blog will be helpful for you.
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