implementation 'com.android.support:appcompat-v4:28.0.0' 把support:appcompat 改成support:support 就好了
## Failed to resolve: com.android.support:appcompat-v4:28.0.0這個錯誤是V4包引來出現(xiàn)問題. 我原先報錯時的依賴: implementation 'com.android.support:appcompat-v7:28.0.0' imp...