mainActivity.kt import requirements

Android Programming (4th Edition) 7. Android SDK Versions and Compatibility
1

Using Android Studio 4.1.2
Build #AI-201.8743.12.41.7042882, built on December 19, 2020
Runtime version: 1.8.0_242-release-1644-b3-6222593 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Linux 5.8.0-40-generic
GC: ParNew, ConcurrentMarkSweep
Memory: 1246M
Cores: 4
Registry: ide.new.welcome.screen.force=true, external.system.auto.import.disabled=trttine ue
Non-Bundled Plugins: org.jetbrains.kotlin, com.wakatime.intellij.plugin, mobi.hsz.idea.gitignore
Current Desktop: ubuntu:GNOME

Getting an error in mainActivity.kt. Am being required to import android.annotation.SuppressLint and androidx.annotation.RequiresAPI.
Two Android errors:

  • Missing Constraints in ConstraintLayout
  • activity_cheat.xml
  • This view is not constrained. It only has designtime positions, so it will jump to (0,0) at runtime unless you add the constraints
  • This view is not constrained. It only has designtime positions, so it will jump to (0,0) at runtime unless you add the constraints
    and 4 General errors:
  • General
  • Annotator
  • MainActivity.kt
  • Unresolved reference: view
  • Unresolved reference: view
  • Unresolved reference: view
  • Unresolved reference: RESULT_CODE_CHEAT

All other files identical to sample code. Ideas please.
paul

2

Could you post your MainActivity.kt code?
I doubt your code is identical to the code from the book as it seems you are using a ConstraintLayout.
It is difficult to know what the issue is without seeing any code.