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Maybe I’m missing something but my question is: can I access the database from different points of my code each one using its own DatabaseHelper instance? Or is it better to have a unique global static DatabaseHelper accessible from everywhere (threads, activities, …)? What is the best practice in this case?
It is better to have a single instance if you are using multiple threads, as thread synchronization will be applied automatically. Whether that single instance is a singleton or wrapped in a
ContentProvideris up to you.