Android studio can't use ACRA v4.8.5

[Mít Tơ Lớp]

Hi.
I'm using Android studio 1.5.1.
When i use:

compile 'ch.acra:acra:4.6.2'

in build.grade, all normal except i can't generate signed APK.
Error:

You probably need to update the library versions.

If i use:

compile 'ch.acra:acra:4.8.5'

in Application class, error: Cannot resolve symbol 'ReportsCrashes', 'ACRA',...

How do i do ?
Thanks for all.

Link from here

[William Ferguson]

ACRA-4.6.2 was shipped as a jar and current versions of Gradle appear to assume that a library is an AAR. That's why Gradle can't find  4.6.2. If you want to use 4.6.2 (and I don't recommend that), you need to provide the "jar" specifier for the library.

ACRA-4.8.5 does ship as an AAR. It sounds like Gradle has got itself confused and you may need to clear your Gradle cache.

See https://github.com/ACRA/acra/issues/441

William