Challenge: Deleting Crimes
If you added a Delete Crime action item earlier, this challenge builds off of that by adding the ability to delete crimes from your database by calling a deleteCrime(Crime) method on CrimeLab, which will call mDatabase.delete(…) to finish the job.
And if you do not have a Delete Crime? Well, go ahead and add it! Add an action item to CrimeFragment’s toolbar that calls CrimeLab.deleteCrime(Crime) and finish()es its Activity.
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