升级到flutter 1.12后，尝试flutter build apk --release build 一个apk包出来
然而报如下错误：
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':sms:verifyReleaseResources'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
> Android resource linking failed
C:\Users\Administrator\.gradle\caches\transforms-2\files-2.1\a9c96bd680f706d3c9af22cf8b972513\core-1.0.0\res\values\values.xml:57:5-88:25: AAPT: error: resource android:attr/fontVariationSettings not found.
C:\Users\Administrator\.gradle\caches\transforms-2\files-2.1\a9c96bd680f706d3c9af22cf8b972513\core-1.0.0\res\values\values.xml:57:5-88:25: AAPT: error: resource android:attr/ttcIndex not found.
* 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 1m 52s
看起来很吓人，然而，找到关键影响因素就好了，看这行
Execution failed for task ':sms:verifyReleaseResources'.看来有可能和这个“sms”有关
这个sms自动18年9月就没有再更新过了
附链接：https://pub.dev/packages/sms/versions
移除对于sms的依赖，直接用自己的插件替换相应功能。。。
问题解决。。。
