Barrier doesn't set to referenceIds in constraint layout?

Question

hey last few days I am exploring about the constraint layout.the concept of barrier I can understand but when i implement I can\'t get the correct output.

I want to set

Answer 1

I resolved this issue by updating the ConstraintLayout library

From

implementation 'com.android.support.constraint:constraint-layout:2.0.0-alpha2'

To this

implementation 'com.android.support.constraint:constraint-layout:2.0.0-alpha3'