Error: The getter 'a', 'r', 'g' and 'b' isn't defined for the class 'Color' - with new version 5.3.0 and Flutter 3.24.5

[marcellocamara]

The new version of google_mobile_ads: 5.3.0, didn't run with flutter 3.24.5, and dart 3.5.4, it requires flutter version >= 3.27.
To solve it, just need to bump the flutter version - but there are people who can't do the version bump - in this case should'n the documentation be fixed with the new minimum dart version?

As documentation says, it should be able to run at minimum dart 2.17 (but it's not):

See the error logs when try to build:

Error log

../../.pub-cache/hosted/pub.dev/google_mobile_ads-5.3.0/lib/src/ad_instance_manager.dart:992:33: Error: The getter 'a' isn't defined for the class 'Color'. - 'Color' is from 'dart:ui'. Try correcting the name to the name of an existing getter, or defining a getter or field named 'a'. writeValue(buffer, (value.a * 255).toInt()); ^

../../.pub-cache/hosted/pub.dev/google_mobile_ads-5.3.0/lib/src/ad_instance_manager.dart:993:33: Error: The getter 'r' isn't defined for the class 'Color'.

• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'r'.
  writeValue(buffer, (value.r * 255).toInt());
  ^

../../.pub-cache/hosted/pub.dev/google_mobile_ads-5.3.0/lib/src/ad_instance_manager.dart:994:33: Error: The getter 'g' isn't defined for the class 'Color'.

• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'g'.
  writeValue(buffer, (value.g * 255).toInt());
  ^

../../.pub-cache/hosted/pub.dev/google_mobile_ads-5.3.0/lib/src/ad_instance_manager.dart:995:33: Error: The getter 'b' isn't defined for the class 'Color'.

• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'b'.
  writeValue(buffer, (value.b * 255).toInt());
  ^

Target kernel_snapshot_program failed: Exception

Plugin Version

google_mobile_ads: ^5.3.0

The problem

Steps to Reproduce

Update this package to 5.3.0 and run with Flutter 3.24.5.

[marcellocamara]

The Color class, on Flutter 3.24.5 with Dart 3.5.4, is defined with this fields:

  int get alpha => (0xff000000 & value) >> 24;
  ...
  int get red => (0x00ff0000 & value) >> 16;
  ...
  int get green => (0x0000ff00 & value) >> 8;
  ...
  int get blue => (0x000000ff & value) >> 0;

There are no a, r, g and b variables.

[ItsJoltix]

I'm also experiencing this issue... Is there any fix for this without having to upgrade?

[marcellocamara]

@ItsJoltix
Is there any fix for this without having to upgrade?

You can remove the ^ from your pubspec.yaml dependencies, to avoid any update

google_mobile_ads: 5.2.0 fixes the version
google_mobile_ads: ^5.2.0 updates the version to 5.3.0 and causes the crash.

[malandr2]

Thanks all, I see a change was made in https://github.com/googleads/googleads-mobile-flutter/pull/1223/files. I've escalated this to @LTPhantom to take a closer look

[deep-esh7]

yes when integrating app getting crashed only . what to do ?

[LTPhantom]

Hello everyone! Will work on a fix and make a patch release as soon as possible