jskubick

jskubick

Kotlin and Android Development featuring Jetpack: Error in generated Game.java (page 136)

I’m under the impression that when the reader gets to page 136 (“View Data with the Database Inspector”), the code SHOULD be able to build without errors.

Reasons for the assumption:

  • The Database Inspector ISN’T appearing (as far as I can tell, in Arctic Fox, it was moved to the “App Inspection” tab and no longer exists as a Tool window of its own).

  • I assume the act of successfully building and running the app is what creates and populates the database on the emulator, and…

  • once that database exists, Android Studio notices it & reveals the Database Inspector functionality.

There are no visible errors in the sourcecode itself (no red squiggly lines in any editable source files, no red marks along the right margin), but I’m getting a slew of errors in the generated app/build/tmp/kapt3/stubs/debug/dev/mfazio/pennydrop/data/Game.java class, PennyDropDao.java, and Player.java (note: all are *.java and presumably generated, the *.kt files seem to be fine) that I’m not sure how to troubleshoot:

C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:7: warning: There are multiple good constructors and Room will pick the no-arg constructor. You can use the @Ignore annotation to eliminate unwanted constructors.
public final class Game {
             ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:11: error: Cannot find setter for field.
    private final dev.mfazio.pennydrop.data.GameState gameState = null;
                                                      ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:13: error: Cannot find setter for field.
    private final java.time.OffsetDateTime startTime = null;
                                           ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:15: error: Cannot find setter for field.
    private final java.time.OffsetDateTime endTime = null;
                                           ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:17: error: Cannot find setter for field.
    private final java.util.List<java.lang.Integer> filledSlots = null;
                                                    ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:19: error: Cannot find setter for field.
    private final java.lang.Integer lastRoll = null;
                                    ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:21: error: Cannot find setter for field.
    private final java.lang.String currentTurnText = null;
                                   ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:22: error: Cannot find setter for field.
    private final boolean canRoll = false;
                          ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:23: error: Cannot find setter for field.
    private final boolean canPass = false;
                          ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:7: warning: There are multiple good constructors and Room will pick the no-arg constructor. You can use the @Ignore annotation to eliminate unwanted constructors.
public final class Game {
             ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:11: error: Cannot find setter for field.
    private final dev.mfazio.pennydrop.data.GameState gameState = null;
                                                      ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:13: error: Cannot find setter for field.
    private final java.time.OffsetDateTime startTime = null;
                                           ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:15: error: Cannot find setter for field.
    private final java.time.OffsetDateTime endTime = null;
                                           ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:17: error: Cannot find setter for field.
    private final java.util.List<java.lang.Integer> filledSlots = null;
                                                    ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:19: error: Cannot find setter for field.
    private final java.lang.Integer lastRoll = null;
                                    ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:21: error: Cannot find setter for field.
    private final java.lang.String currentTurnText = null;
                                   ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:22: error: Cannot find setter for field.
    private final boolean canRoll = false;
                          ^
C:\src\experiments\android\PennyDrop\app\build\tmp\kapt3\stubs\debug\dev\mfazio\pennydrop\data\Game.java:23: error: Cannot find setter for field.
    private final boolean canPass = false;
                          

Any idea which class to even start looking at to figure out what’s wrong? I’m guessing I forgot an annotation somewhere… or possibly, in an attempt to fix an earlier typo problem by copying files from the .zip file, might have created a bigger one by prematurely copying something mentioned later in the chapter that’s now triggering the error above by expecting the presence of something that officially hasn’t been added yet as of page 136.

For what it’s worth, it looks like the following methods of PennyDropDao.kt haven’t yet been mentioned as of page 136, but are in the .zip file’s version, and the references to them by the lines added prior to page 136 will generate errors in PennyDropDao.kt itself unless they’re added:

getPlayer()
insertGame()
insertPlayer()
insertPlayers()
updateGame()

According to WinMerge, my versions of Converters.kt, Game.kt, GameState.kt, GameStatus.kt, PennyDropDatabase.kt, and PennyDropRepository.kt are presently identical to the versions in the zipfile.

As far as I can recall, my copy of PennyDropDao.kt was identical, until I commented the methods out, then went through chapter 5 from the start and moved the methods from inside the comment block to the outside in the order they’re mentioned in the chapter. That’s how I noticed that 5 methods listed above were referenced by the code, but not mentioned yet as of page 136… they were still in the comment block as of page 136.

Marked As Solved

mfazio23

mfazio23

Author of Kotlin and Android Development featuring Jetpack

Jeff, I think I got it. The book was written against Room 2.3.0-beta01 which doesn’t play nice with Kotlin 1.5.30. If you upgrade your Room dependency to 2.3.0, it should work without trouble.

Please let me know either way!

Also Liked

mfazio23

mfazio23

Author of Kotlin and Android Development featuring Jetpack

Hey Jeff,
I’m looking through what you have here and I’m trying to figure out what’s going on.

The first thing I want to hit are those five functions from PennyDropDao. All five are on pages 118 and 119 when we first create the abstract class. Are these the functions you’re referencing here?

The issue with the Game class looks familiar from my initial development work, though I do not remember what caused that specific problem. Could you share what your Game class looks like? And an offer: if you wanted to upload your work to GitHub or something similar, I’d be willing to troubleshoot things that way with you. I want to make sure you can get as much as possible out of the book.

For reference, you’re right on point with the *.java files being generated. :+1: Also, you’re correct on the Database Inspector being moved in Arctic Fox. I’m really starting to dislike this new Android Studio update.

Let me know on your Game class (and if you want to put the whole project out somewhere I can access it) and we’ll go from there!

jskubick

jskubick

OK, that fixed it. Thanks!!!

Where Next?

Popular Pragmatic Bookshelf topics Top

jeffmcompsci
Title: Design and Build Great Web APIs - typo “https://company-atk.herokuapp.com/2258ie4t68jv” (page 19, third bullet in URL list) Typo:...
New
mikecargal
Title: Hands-On Rust (Chap 8 (Adding a Heads Up Display) It looks like ​.with_simple_console_no_bg​(SCREEN_WIDTH*2, SCREEN_HEIGHT*2...
New
HarryDeveloper
Hi @venkats, It has been mentioned in the description of ‘Supervisory Job’ title that 2 things as mentioned below result in the same eff...
New
rmurray10127
Title: Intuitive Python: docker run… denied error (page 2) Attempted to run the docker command in both CLI and Powershell PS C:\Users\r...
New
jeremyhuiskamp
Title: Web Development with Clojure, Third Edition, vB17.0 (p9) The create table guestbook syntax suggested doesn’t seem to be accepted ...
New
brian-m-ops
#book-python-testing-with-pytest-second-edition Hi. Thanks for writing the book. I am just learning so this might just of been an issue ...
New
adamwoolhether
I’m not quite sure what’s going on here, but I’m unable to have to containers successfully complete the Readiness/Liveness checks. I’m im...
New
digitalbias
Title: Build a Weather Station with Elixir and Nerves: Problem connecting to Postgres with Grafana on (page 64) If you follow the defau...
New
Charles
In general, the book isn’t yet updated for Phoenix version 1.6. On page 18 of the book, the authors indicate that an auto generated of ro...
New
brunogirin
When running tox for the first time, I got the following error: ERROR: InterpreterNotFound: python3.10 I realised that I was running ...
New

Other popular topics Top

PragmaticBookshelf
Stop developing web apps with yesterday’s tools. Today, developers are increasingly adopting Clojure as a web-development platform. See f...
New
PragmaticBookshelf
Machine learning can be intimidating, with its reliance on math and algorithms that most programmers don't encounter in their regular wor...
New
PragmaticBookshelf
Learn from the award-winning programming series that inspired the Elixir language, and go on a step-by-step journey through the most impo...
New
Exadra37
Please tell us what is your preferred monitor setup for programming(not gaming) and why you have chosen it. Does your monitor have eye p...
New
Exadra37
I am asking for any distro that only has the bare-bones to be able to get a shell in the server and then just install the packages as we ...
New
Exadra37
Oh just spent so much time on this to discover now that RancherOS is in end of life but Rancher is refusing to mark the Github repo as su...
New
PragmaticBookshelf
Build efficient applications that exploit the unique benefits of a pure functional language, learning from an engineer who uses Haskell t...
New
AstonJ
Was just curious to see if any were around, found this one: I got 51/100: Not sure if it was meant to buy I am sure at times the b...
New
New
PragmaticBookshelf
Get the comprehensive, insider information you need for Rails 8 with the new edition of this award-winning classic. Sam Ruby @rubys ...
New

Sub Categories: