About the 11. Databases and the Room Library category

Android Programming (4th Edition) 11. Databases and the Room Library
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The code that came with the book for chapter 11 is not working. Room.databaseBuilder always sets the database field to null. The criminalIntent application is always empty.
I had uploaded the databases folder as mentioned in the book. I debug the application and found database variable is always set to null. The room library is not able to access the crime-database.
Can anyone help me with this. Why am I not seeing the data pulled from the database.

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I had the same issue.and the way I went about it was by upgrading the Android API on the emulator to the target API. The original api I was using was 25 and I updated to 29, both cases on a pixel 3. It also worked w/o any issues on my sony Experia which was running a Android Oreo.

I know that it doesn’t fix the problem that it doesn’t work for an older API, in this case 25, but I hope this helps to move along with the exercise – which what I was focus on.

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I was having the same issue, updated to API 29 and it worked. Problem is I want to be able to use what I learn in the book for an actual sellable app. Can’t sell an app that only works on api 29???

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I followed the suggestions listed in this thread and updated the API to target API 30 from 29 but I still keeping seeing the blank screen. It didn’t work on 29 as well as 30.

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I did this assignment a few months ago and got it to work by upping the api to 29, but i am now revisiting this assignment and it is not working. has anyone had this issue and then continued forward to find that that the database starts working in later chapters?

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right now i have decided to try updated everything. i’m hoping this will work.

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I think you have missed the suggestion. It is not suggested that you change the target in the gradle file, but that you change your emulator to the target.