Removing/Adding constraint programmatically in ConstraintLayout

Question

I want to remove and add constraint programmatically based on some condition. Here are the screenshots:

and I want to remove it like this but in code:

Answer 1

I have not worked through your code, but the following illustrates how to break and make the constraint using ConstraintSet.

    ConstraintSet set = new ConstraintSet();
    ConstraintLayout layout;

    layout = (ConstraintLayout) findViewById(R.id.layout);
    set.clone(layout);
    // The following breaks the connection.
    set.clear(R.id.bottomText, ConstraintSet.TOP);
    // Comment out line above and uncomment line below to make the connection.
    // set.connect(R.id.bottomText, ConstraintSet.TOP, R.id.imageView, ConstraintSet.BOTTOM, 0);
    set.applyTo(layout);