安装jpush_flutter Ruing gradle task ''assembleDebug"就报错

[caojian1235]

FAILURE: Build failed with an exception.

• What went wrong: Could not determine the dependencies of task ':jpush_flutter:compileDebugAidl'.

Failed to find Platform SDK with path: platforms;android-28

• 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 5s Exception: Gradle task assembleDebug failed with exit code 1

然后我也配置了maven 还是报错 有没有大佬知道要怎们弄