Build error: Plugin with id 'com.android.library' not found.

[talwarabhimanyu]

Building APK (through Android Studio) fails with the following error:

FAILURE: Build failed with an exception.

• Where:
  Build file '/home/abhimanyu/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/agora_rtc_engine-3.2.1/android/build.gradle' line: 28

• What went wrong:
  A problem occurred evaluating root project 'agora_rtc_engine'.

Plugin with id 'com.android.library' not found.

I have tried a few solutions from the internet: upgrading Android Gradle plugin to 4.1.0 and Gradle itself to 6.5-all, and upgrading Android Studio, but the error persists. I have seen similar issues #256 and #252 but it didn't help. Kindly indicate what I can do to resolve this.

Here is the result of flutter doctor -v

[✓] Flutter (Channel master, 1.26.0-2.0.pre.168, on Linux, locale en_CA.UTF-8)
• Flutter version 1.26.0-2.0.pre.168 at /home/abhimanyu/snap/flutter/common/flutter
• Framework revision 299e017e41 (8 weeks ago), 2021-01-03 06:29:01 -0500
• Engine revision 121b67fb85
• Dart version 2.12.0 (build 2.12.0-179.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
• Android SDK at /home/abhimanyu/Android/Sdk
• Platform android-30, build-tools 30.0.2
• Java binary at: /usr/local/android-studio/jre/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
• All Android licenses accepted.

[✓] Chrome - develop for the web
• Chrome at google-chrome

[✓] Android Studio
• Android Studio at /usr/local/android-studio
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• android-studio-dir = /usr/local/android-studio
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] VS Code (version 1.52.1)
• VS Code at /usr/share/code
• Flutter extension can be installed from:
🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (2 available)
• sdk gphone x86 arm (mobile) • emulator-5554 • android-x86 • Android 11 (API 30) (emulator)
• Chrome (web) • chrome • web-javascript • Google Chrome 86.0.4240.183

• No issues found!

Smartphone
Android emulator Pixel 3XL API 30

[talwarabhimanyu]

It turns out I had made a silly error while migrating to AndroidX. In android/app/src/build.gradle, instead of androidx.test:runner:1.1.1 I had androidx.test.runner:1.1.1 (instead of : after test, I had .).

After making that change, the build worked fine. Sorry for the trouble!

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