How to resolve the error package android.support.annotation does not ...
For more information about adding support libraries to your development project using Gradle, see Support Library Setup. For more information about working with Gradle, see Configure Your Build .
ERROR: Could not find com.android.support:appcompat-v7:23.2.1. #22 - GitHub
Error:org.gradle.internal.resolve.ModuleVersionResolveException: No cached version of com.android.support:appcompat-v7:26.1. available for offline mode
gradle - Can't import android.support.v7 (appcompat) - Unresolved ...
For detailed information about the v7 mediarouter library APIs, see the android.support.v7.media package in the API reference. The Gradle build script dependency identifier for this library is as follows: com.android.support:mediarouter-v7:28..
Error "package android.support.v7.app does not exist"
When building your Android application, you might find an error saying that the package android.support.annotation does not exist. Here's an example of the error: error: package android.support.annotation does not exist. error: cannot find symbol class NonNull. Error:Execution failed for task ':app:compileDebugJavaWithJavac'.