运行flutter app报错WARNING: API 'variant.getJavaCompile()' is obsolete and has been replaced with 'varia

运行flutter app报错WARNING: API 'variant.getJavaCompile()' is obsolete and has been replaced with 'variant.getJavaCompileProvider()'. 

新建第一个flutter项目运行时报错提示getJavaCompile方法过期，提示如下：

WARNING: API 'variant.getJavaCompile()' is obsolete and has been replaced with 'variant.getJavaCompileProvider()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration-avoidance.
To determine what is calling variant.getJavaCompile(), use -Pandroid.debug.obsoleteApi=true on the command line to display a stack trace.
Affected Modules: asyncokhttp

但是我项目里面没有用到这个方法，百度上说了很多问题，想什么gradle版本不对，同步下载不了依赖库，要改镜像下载啥的，都试了，都没用，最后在stackoverflow看到一个回答：

https://stackoverflow.com/questions/52470044/warning-api-variant-getjavacompile-is-obsolete-and-has-been-replaced-with?r=SearchResults

后面有一个回答是提到Kotlin版本问题，将Kotlin版本由1.2.71升级到1.3.50就可以了，按照他的回答，升级Kotlin后果然可以正常运行了。

大家遇到的问题可能不一样，可以看下stackoverflow上面的其他回答