android-studio - 升级到Gradle 4.1时出现 'unresolved supertypes'错误

Question

我刚刚将项目升级到gradle 4.1，现在出现此错误:

    Supertypes of the following classes cannot be resolved. Please make 
sure you have the required dependencies in the classpath: class com.google.android.gms.maps.model.LatLng, unresolved supertypes:
 com.google.android.gms.common.internal.safeparcel.zza class com.google.android.gms.maps.model.PolylineOptions, unresolved supertypes:
 com.google.android.gms.common.internal.safeparcel.zza class com.google.android.gms.maps.model.MarkerOptions, unresolved supertypes:
 com.google.android.gms.common.internal.safeparcel.zza class com.google.android.gms.maps.model.CameraPosition, unresolved supertypes: 
com.google.android.gms.common.internal.safeparcel.zza class com.google.android.gms.location.LocationRequest, unresolved supertypes:
 com.google.android.gms.common.internal.safeparcel.zza class 
com.google.android.gms.location.LocationSettingsRequest, unresolved 
supertypes: com.google.android.gms.common.internal.safeparcel.zza class
 com.google.android.gms.location.LocationSettingsResult, unresolved 
supertypes: com.google.android.gms.common.internal.safeparcel.zza

我删除了 .gradle缓存以查看是否可以解决该错误。没有骰子，我不确定到底是怎么回事。它在升级之前没有问题地进行了编译。有任何想法吗？

Answer 1

如果您使用的Firebase和Google Play服务的版本不同，那么您将面临此问题。