Android Studio ...
The following SDK components were not installed: extra-android-m2repository, sys-img-x86-addon-google_apis-google-21
sdk组件extra-android-m2repository, sys-img-x86-addon-google_apis-google-21这几个没安上，翻墙***的时候不要断网哦~
Android Studio ...
服务***:400-678-8266