dachristenson

dachristenson

Kotlin and Android Development featuring Jetpack: Should app build by end of p. 294?

@mfazio23

My version of the app was building (version as of p. 284), but as of the end of p. 294, it fails to build with this error:

e: file:///D:/home/Derek/Dropbox/AndroidStudioProjects/AndroidBaseballLeague/app/src/main/java/com/example/abl/settings/SettingsFragment.kt:100:15 Unresolved reference: attr

When I look at that, Android Studio complains that the attribute colorPrimary is undefined. As far as I can tell, my theme files are almost identical to those in the provided code for Ch. 12, and colorPrimary is, indeed, defined for both day and night themes. So, why is it hanging up here and refusing to build? Am I missing something that is mentioned later in Ch. 12?

Also, Android Studio is giving me a warning about onBindPreferences, saying

PreferenceFragmentCompat.onBindPreferences can only be called from within the same library group prefix (referenced groupId=androidx.preference with prefix androidx from groupId=Android Baseball League)

That warning, however, does not seem to be preventing the build.

Marked As Solved

mfazio23

mfazio23

Author of Kotlin and Android Development featuring Jetpack

This one’s weird as I’m not sure what differs between your project and what I have set up. I’m assuming it’s something with the updated library versions, but I’m honestly not sure (and yes, I’m seeing the same thing on my version of your code).

That being said, an easy fix is to change the attribute reference to android.R.attr.colorPrimary. It’ll pull in the <item name="colorPrimary">@color/androidGreen</item> attribute from your themes all the same.

Where Next?

Popular Pragmatic Bookshelf topics Top

jimmykiang
This test is broken right out of the box… — FAIL: TestAgent (7.82s) agent_test.go:77: Error Trace: agent_test.go:77 agent_test.go:...
New
brianokken
Many tasks_proj/tests directories exist in chapters 2, 3, 5 that have tests that use the custom markers smoke and get, which are not decl...
New
ianwillie
Hello Brian, I have some problems with running the code in your book. I like the style of the book very much and I have learnt a lot as...
New
jdufour
Hello! On page xix of the preface, it says there is a community forum "… for help if your’re stuck on one of the exercises in this book… ...
New
joepstender
The generated iex result below should list products instead of product for the metadata. (page 67) iex&gt; product = %Product{} %Pento....
New
patoncrispy
I’m new to Rust and am using this book to learn more as well as to feed my interest in game dev. I’ve just finished the flappy dragon exa...
New
jskubick
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 buil...
New
AufHe
I’m a newbie to Rails 7 and have hit an issue with the bin/Dev script mentioned on pages 112-113. Iteration A1 - Seeing the list of prod...
New
a.zampa
@mfazio23 I’m following the indications of the book and arriver ad chapter 10, but the app cannot be compiled due to an error in the Bas...
New
gorkaio
root_layout: {PentoWeb.LayoutView, :root}, This results in the following following error: no “root” html template defined for PentoWeb...
New

Other popular topics Top

PragmaticBookshelf
Write Elixir tests that you can be proud of. Dive into Elixir’s test philosophy and gain mastery over the terminology and concepts that u...
New
ohm
Which, if any, games do you play? On what platform? I just bought (and completed) Minecraft Dungeons for my Nintendo Switch. Other than ...
New
PragmaticBookshelf
Tailwind CSS is an exciting new CSS framework that allows you to design your site by composing simple utility classes to create complex e...
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
Margaret
Hello everyone! This thread is to tell you about what authors from The Pragmatic Bookshelf are writing on Medium.
1147 29994 760
New
PragmaticBookshelf
Create efficient, elegant software tests in pytest, Python's most powerful testing framework. Brian Okken @brianokken Edited by Kat...
New
PragmaticBookshelf
Build efficient applications that exploit the unique benefits of a pure functional language, learning from an engineer who uses Haskell t...
New
Help
I am trying to crate a game for the Nintendo switch, I wanted to use Java as I am comfortable with that programming language. Can you use...
New
AstonJ
If you want a quick and easy way to block any website on your Mac using Little Snitch simply… File &gt; New Rule: And select Deny, O...
New
PragmaticBookshelf
Fight complexity and reclaim the original spirit of agility by learning to simplify how you develop software. The result: a more humane a...
New

Sub Categories: