库版本11.2.0的firebase ProGuard错误(警告)

我正在研究11.0.4 firebase库版本。 今天我已经切换到最新版本:11.2.0,当我尝试构建发布版本(启用ProGuard)时,我收到错误消息:

Warning:com.google.android.gms.internal.zzbdo: can't find referenced method 'boolean isInstantApp(java.lang.String)' in library class android.content.pm.PackageManager Warning:there were 1 unresolved references to library class members. Warning:Exception while processing task java.io.IOException: Please correct the above warnings first. Error:Execution failed for task ':app:transformClassesAndResourcesWithProguardForRelease'. > Job failed, see logs for details 

和gradle控制台:

 Warning: there were 1 unresolved references to library class members. You probably need to update the library versions. (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedlibraryclassmember) 

我使用的是API 25(rev.3),在API 26中添加了方法isInstantApp 。将targetSdkVersion更改为此版本重新解决了问题。

https://github.com/android/platform_frameworks_base/commit/31a16551910492321a6f7c291eb33e1458f39f0a#diff-a5f0b5ebe6a871aca1c5841bc0497538

对于那些不想开始使用运行时权限的人,您不需要增加targetSdkVersion,增加compileSdkVersion就足够了。