升级android studio3.0

1.正常下载

2.项目:build.gradle

3.

app-> build.gradle  (apt -> annotationProcessor)

4.

将apt变更为 annotiationProcessor的对应 plugin删除

5.

可选为支持1.8支持java8

6.

Error:Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.

> com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex

找到并删除 .gradle 文件夹

clean重新运行