库版本 11.2.0 的 firebase ProGuard 错误(警告)

firebase ProGuard error (warning) with library version 11.2.0

我正在研究 11.0.4 firebase 库版本。今天我切换到最新版本:11.2.0,当我尝试构建发布版本(启用 ProGuard)时出现错误:

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),方法isInstantApp是在API 26中添加的。将targetSdkVersion改成这个版本解决了这个问题。

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

还不想开始使用runtime权限的朋友,可以不用增加targetSdkVersion,增加compileSdkVersion即可。