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

johnp
Running the examples in chapter 5 c under pytest 5.4.1 causes an AttributeError: ‘module’ object has no attribute ‘config’. In particula...
New
mikecargal
Title: Hands-On Rust (Chapter 11: prefab) Just played a couple of amulet-less games. With a bit of debugging, I believe that your can_p...
New
herminiotorres
Hi @Margaret , On page VII the book tells us the example and snippets will be all using Elixir version 1.11 But on page 3 almost the en...
New
raul
Hi Travis! Thank you for the cool book! :slight_smile: I made a list of issues and thought I could post them chapter by chapter. I’m rev...
New
swlaschin
The book has the same “Problem space/Solution space” diagram on page 18 as is on page 17. The correct Problem/Solution space diagrams ar...
New
adamwoolhether
When trying to generate the protobuf .go file, I receive this error: Unknown flag: --go_opt libprotoc 3.12.3 MacOS 11.3.1 Googling ...
New
jskubick
I found an issue in Chapter 7 regarding android:backgroundTint vs app:backgroundTint. How to replicate: load chapter-7 from zipfile i...
New
Henrai
Hi, I’m working on the Chapter 8 of the book. After I add add the point_offset, I’m still able to see acne: In the image above, I re...
New
New
dachristenson
I’ve got to the end of Ch. 11, and the app runs, with all tabs displaying what they should – at first. After switching around between St...
New

Other popular topics Top

Devtalk
Hello Devtalk World! Please let us know a little about who you are and where you’re from :nerd_face:
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
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
AstonJ
I have seen the keycaps I want - they are due for a group-buy this week but won’t be delivered until October next year!!! :rofl: The Ser...
New
PragmaticBookshelf
Create efficient, elegant software tests in pytest, Python's most powerful testing framework. Brian Okken @brianokken Edited by Kat...
New
foxtrottwist
A few weeks ago I started using Warp a terminal written in rust. Though in it’s current state of development there are a few caveats (tab...
New
PragmaticBookshelf
Author Spotlight Jamis Buck @jamis This month, we have the pleasure of spotlighting author Jamis Buck, who has written Mazes for Prog...
New
New
sir.laksmana_wenk
I’m able to do the “artistic” part of game-development; character designing/modeling, music, environment modeling, etc. However, I don’t...
New
AstonJ
If you’re getting errors like this: psql: error: connection to server on socket “/tmp/.s.PGSQL.5432” failed: No such file or directory ...
New

Sub Categories: