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

jimschubert
In Chapter 3, the source for index introduces Config on page 31, followed by more code including tests; Config isn’t introduced until pag...
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
AleksandrKudashkin
On the page xv there is an instruction to run bin/setup from the main folder. I downloaded the source code today (12/03/21) and can’t see...
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
AndyDavis3416
@noelrappin Running the webpack dev server, I receive the following warning: ERROR in tsconfig.json TS18003: No inputs were found in c...
New
fynn
This is as much a suggestion as a question, as a note for others. Locally the SGP30 wasn’t available, so I ordered a SGP40. On page 53, ...
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
dsmith42
Hey there, I’m enjoying this book and have learned a few things alredayd. However, in Chapter 4 I believe we are meant to see the “&gt;...
New
andreheijstek
After running /bin/setup, the first error was: The foreman' command exists in these Ruby versions: That was easy to fix: gem install fore...
New
mcpierce
@mfazio23 I’ve applied the changes from Chapter 5 of the book and everything builds correctly and runs. But, when I try to start a game,...
New

Other popular topics Top

brentjanderson
Bought the Moonlander mechanical keyboard. Cherry Brown MX switches. Arms and wrists have been hurting enough that it’s time I did someth...
New
Rainer
My first contact with Erlang was about 2 years ago when I used RabbitMQ, which is written in Erlang, for my job. This made me curious and...
New
AstonJ
I’ve been hearing quite a lot of comments relating to the sound of a keyboard, with one of the most desirable of these called ‘thock’, he...
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
AstonJ
Do the test and post your score :nerd_face: :keyboard: If possible, please add info such as the keyboard you’re using, the layout (Qw...
New
PragmaticBookshelf
Build highly interactive applications without ever leaving Elixir, the way the experts do. Let LiveView take care of performance, scalabi...
New
AstonJ
Biggest jackpot ever apparently! :upside_down_face: I don’t (usually) gamble/play the lottery, but working on a program to predict the...
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
New
AstonJ
Curious what kind of results others are getting, I think actually prefer the 7B model to the 32B model, not only is it faster but the qua...
New

Sub Categories: