MaxHeight on FlowLayout

[lawloretienne]

How do you set a maxHeight on the FlowLayout? Ideally I would have the FlowLayout set to android:layout_height="wrap_content" in xml, and then have a way to set the maxHeight of this FlowLayout.

[blazsolar]

At the moment you can't do that. FlowLayout extends ViewGroup which only supports minHeight but not maxHeight. But you could easily do this in your code. By checking view height in onPreDrawListener.

[lawloretienne]

Can you show an example of how you would do it in onPreDrawListener?

[lawloretienne]

I tried setting the maxHeight like this

https://gist.github.com/lawloretienne/e79b16d285b94b64b473

But then the views inside the FlowLayout never get displayed, unless this FlowLayout is scrolled off screen and then back on screen.

[blazsolar]

I was thinking something like this

// onCreate of your activity/fragment
// at this point flowLayout height should be set to wrap_content
flowLayout.getViewTreeObserver().addOnPreDrawListener(new OnPreDrawListener() {
    public void onPreDraw() {
        flowLayout.getViewTreeObserver().removePreDrawListener(this)

        if(flowLayout.getHeight > maxHeight) {
            flowLayout.getLayoutParams().height = maxHeight;
        }

        return false;
    }
})

This is from top of my head so it may not work right away. But it should with a bit of twerking.