Room On Main Thread

Room is an android library on top of sqlite which performs compile time checks on sql queries and frees you up from writing db helpers.

Room on main thread. Fixed a bug where room would perform disk i o in the main thread when subscribing and disposing from an rx return type. Doing database operations insert update delete read data from the table has to be done in background thread will it was always intended to be perform on background thread but now it s mandatory. Asynchronous queries queries that return instances of livedata or flowable are exempt from this rule because they asynchronously run the query on a background. Dao methods can now be marked as suspending to ensure that they are not executed on the main thread.

Here an app will crash as the operation is performed on a main thread. By default to avoid poor ui performance room doesn t allow you to issue queries on the main thread. Photo by cheryl zibisky photography. Room takes care of mundane tasks that you used to handle with an sqliteopenhelper.

When room queries return livedata the queries are automatically run asynchronously on a background thread. Room doesn t support database access on the main thread unless you ve called allowmainthreadqueries on the builder because it might lock the ui for a long period of time. Mary uses decorative threads to add color to her studio as well. Fixed a bug where room would fail to find an appropriate type converter for a field in a kotlin entity class.

Room 2 1 adds support for kotlin coroutines. Room uses the dao to issue queries to its database.