The following classes could not be found: - com.example.humsafardriver (Fix Build Path, Edit XML, Create Class) when i try constraint layout

Question

Rendering Problems The following classes could not be found: android.support.constraint.ConstraintLayout I have tried avery thing

You can check the same question in this [link](https://stackoverflow.com/questions/29194479/android-studio-rendering-problems-the-following-classes-could-not-be-found) — Android Developer, Oct 25 '19 at 12:39
It looks similar to https://stackoverflow.com/questions/42442240/rendering-problems-the-following-classes-could-not-be-found-android-support-con — Ganesa Vijayakumar, Oct 25 '19 at 12:44

score 1 · Answer 1 · answered Oct 25 '19 at 12:41

Solution in this link

You have to do two things:

be sure to have imported right appcompat-v7 library in your project structure -> dependencies
change the theme in the preview window to not an AppCompat theme. Try with Holo.light or Holo.dark for example.

score 0 · Answer 2 · answered Oct 25 '19 at 12:39

0

you haven't added required dependency for constraintlayout i guess. add this to your app/build.gradle

implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

If you already added, you might have to convert all your dependencies to androidX.

answered Oct 25 '19 at 12:39

touhid udoy

2 Answers2