直接用 Android studio 打开 安卓项目是可以直接部署到模拟器上，但是通过 flutter 项目就无法部署到模拟器上面
Launching lib\main.dart on Android SDK built for x86 in debug mode…
Initializing gradle…
Resolving dependencies…

The Gradle project does not define a task suitable for the requested build.
Review the android/app/build.gradle file and ensure it defines a debug build type.
Gradle task ‘null’…

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FAILURE: Build failed with an exception.

WARNING: This version of image_picker will break your Android build if it or its dependencies aren’t compatible with AndroidX.

• What went wrong:
  See https://goo.gl/CP92wY for more information on the problem and how to fix it.
  Task ‘null’ not found in root project ‘android’.

• Try:
  This warning prints for all Android build failures. The real root cause of the error may be unrelated.
  Run gradlew tasks to get a list of available tasks. 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.

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

BUILD FAILED in 2s
Finished with error: Gradle task null failed with exit code 1