How to programmatically add views and constraints to a ConstraintLayout?
<p>I'm having a problem to programmatically add views to a <code>ConstraintLayout</code>, and set up all the constraints required for the layout to work.  </p>

<p>What I have at the moment doesn't work:</p>

<pre><code>ConstraintLayout layout = (ConstraintLayout) findViewById(R.id.mainConstraint);
ConstraintSet set = new ConstraintSet();
set.clone(layout);

ImageView view = new ImageView(this);
layout.addView(view,0);
set.connect(view.getId(), ConstraintSet.TOP, layout.getId(), ConstraintSet.TOP, 60);
set.applyTo(layout);
</code></pre>

<p>The <code>ImageView</code> doesn't even appear on the layout. When adding to a <code>RelativeLayout</code>, it works like a charm.</p>

<p>What can I do to create the constraints I need, so that my layout work again?</p>