clone下来显示Your app isn't using AndroidX.

[liumingsongning]

FAILURE: Build failed with an exception.

• What went wrong:
  Could not resolve all files for configuration ':app:debugCompileClasspath'.

Could not resolve io.flutter:arm64_v8a_debug:1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954.
Required by:
project :app
Could not resolve io.flutter:arm64_v8a_debug:1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954.
> Could not get resource 'https://jcenter.bintray.com/io/flutter/arm64_v8a_debug/1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954/arm64_v8a_debug-1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954.pom'.
> Could not HEAD 'https://jcenter.bintray.com/io/flutter/arm64_v8a_debug/1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954/arm64_v8a_debug-1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954.pom'.
> Read timed out
Could not resolve io.flutter:x86_64_debug:1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954.
Required by:
project :app
Could not resolve io.flutter:x86_64_debug:1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954.
> Could not get resource 'https://jcenter.bintray.com/io/flutter/x86_64_debug/1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954/x86_64_debug-1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954.pom'.
> Could not HEAD 'https://jcenter.bintray.com/io/flutter/x86_64_debug/1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954/x86_64_debug-1.0.0-9a28c3bcf40ce64fee61e807ee3e1395fd6bd954.pom'.
> Read timed out

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 2m 1s
Exception: Gradle task assembleDebug failed with exit code 1
Exited (sigterm)

[GanZhiXiong]

• 请问这个问题解决了吗？

由于长时间没有反馈，我将关闭这个Issue。若还有问题，请重新打开此Issue！