如何修复“错误：无法解决：com.android.support:support-v4:28.0.0”

Question

ERROR: Failed to resolve: com.android.support:support-v4:28.0.0
        Add Google Maven repository and sync project
        Show in Project Structure dialog
        Affected Modules: app

Answer 1

确保您已提供存储库：

build.gradle（Project）：

allprojects {
  repositories {
      jcenter()
      maven {
          url "https://maven.google.com"
      }
  }
}