Any reason, we measure child to size 0

Hi I am currently reading the zoom layout code in onMeasure of ZoomLayout

// Measure ourselves as MATCH_PARENT
        val widthMode = View.MeasureSpec.getMode(widthMeasureSpec)
        val heightMode = View.MeasureSpec.getMode(heightMeasureSpec)
        if (widthMode == View.MeasureSpec.UNSPECIFIED || heightMode == View.MeasureSpec.UNSPECIFIED) {
            throw RuntimeException("$TAG must be used with fixed dimensions (e.g. match_parent)")
        }
        val widthSize = View.MeasureSpec.getSize(widthMeasureSpec)
        val heightSize = View.MeasureSpec.getSize(heightMeasureSpec)
        setMeasuredDimension(widthSize, heightSize)

        // Measure our child as unspecified.
        val spec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED)
        measureChildren(spec, spec)

May I ask why do we measure child to 0 size

Thanks #

[xiaogegexiao]

Thanks @natario1 .

For having ZL in RecyclerView, I create a branch on my git repo.

https://github.com/xiaogegexiao/ZoomLayout/tree/experimental/xiao/zoomlayout-in-recyclerview.

You can take a look when you have time

[xiaogegexiao]

@markusressel Yeah, thanks, I think it works. Just wonder whether it will support ZL in recyclerview. I will close this issue.