Flutter构建Release APK失败：Android资源链接错误求助

Hey there, let's break down how to fix this frustrating resource linking issue you're facing. The errors about missing android:attr/fontVariationSettings and android:attr/ttcIndex usually stem from outdated dependencies, mismatched Android SDK versions, or unmaintained third-party plugins. Here are actionable steps to resolve this:

1. Align and Upgrade Android SDK & Gradle Versions #

First, make sure your project's Android configuration uses consistent, up-to-date versions. Outdated compileSdkVersion or targetSdkVersion often clash with modern dependency libraries:

• Open android/app/build.gradle and update these values to a recent API level (33 is a safe, widely supported choice right now):

  android {
      compileSdkVersion 33
      defaultConfig {
          targetSdkVersion 33
          // ... other existing configs
      }
  }
  

• Update your Gradle tooling to match:
  • In android/build.gradle, set the Android Gradle plugin version to one compatible with your SDK version (e.g., 7.4.2 for SDK 33):

    buildscript {
        dependencies {
            classpath 'com.android.tools.build:gradle:7.4.2'
            // ... other classpath entries
        }
    }
    

  • In android/gradle/wrapper/gradle-wrapper.properties, use a matching Gradle distribution:

    distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip
    

2. Force Updated AndroidX Core Library #

The error points to an outdated core-1.0.1 dependency, which lacks the required attributes. Force your project to use a newer, compatible version of the AndroidX core library:
Add this block to android/build.gradle inside the allprojects section:

allprojects {
    repositories {
        // ... your existing repositories
    }
    configurations.all {
        resolutionStrategy {
            force 'androidx.core:core:1.7.0' // Or a newer stable version available
        }
    }
}

This overrides the old core library version pulled in by problematic plugins like flutter_appavailability.

3. Fix or Replace the Troublesome Plugin #

Your error originates from the flutter_appavailability plugin, which seems to be unmaintained (relying on outdated Android dependencies). Try these options:

• Update the plugin: Check pub.dev for the latest version of flutter_appavailability — if an update exists, upgrade it in your pubspec.yaml.
• Replace the plugin: If no update is available, switch to a maintained alternative (e.g., package_info_plus for basic app info, or other app availability plugins that support AndroidX).
• Override plugin's Android settings: As a last resort, add an override to allow the plugin to use your project's AndroidX settings. In android/app/build.gradle under defaultConfig, add:

  defaultConfig {
      // ... existing config
      multiDexEnabled true
      manifestPlaceholders = [
          'flutterAppAvailabilityOverride': 'com.example.flutter_appavailability'
      ]
  }
  

4. Clean Caches and Rebuild #

Old cached files often cause unexpected conflicts. Run these commands to start fresh:

flutter clean
rm -rf ~/.gradle/caches/ # For macOS/Linux; delete .gradle/caches folder manually on Windows
flutter pub get
flutter build apk --release

Why Setting compileSdkVersion to 28 Didn't Work #

Even though API 28 supports the missing attributes, the problem was that the outdated core-1.0.1 library (pulled in by flutter_appavailability) didn't include those attributes. Force-upgrading the core library ensures your project uses a version that has them, regardless of what the plugin specifies.

内容的提问来源于stack exchange，提问作者Advin Thepphakan