tree 15efdee7e783dacb4252d66d579d1194b0ca2393
parent 7a78741920e7f28a296bc4d10a0fbe9c2226fb5b
author Greg Spencer <gspencergoog@users.noreply.github.com> 1523575046 -0700
committer GitHub <noreply@github.com> 1523575046 -0700
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Fix a bug in the AnimatedChildSwitcher, add builders. (#16250)

This fixes a rendering problem in the AnimatedChildSwitcher where it would add a new "previous" child each time it rebuilt, and if you did it fast enough, all of them would disappear from the page.

It also expands the API for AnimatedChildSwitcher to allow you to specify your own transition and/or layout builder for the transition.

Fixes #16226