React Native: Does updating a ListView dataSource through setState rerender the whole component?

Question

If I update the dataSource of a ListView by using this.setState({dataSource: blabla}), will this trigger a rerender of the whole component? I only want to change the data in the ListView and I don't want to compute an expensive rerender again.

I think it will re-render. But re-rendering isn't supposed to be very expensive if it has only one small change. Because it only re-renders the changes. — Jeff P Chacko

Jeff P Chacko Jeff P Chacko · Accepted Answer · 2016-02-10T07:20:25

It will seem like the whole app re-renders. But re-rendering isn't supposed to be expensive if it has only one small change. Because it only re-renders the changes.
https://facebook.github.io/react/docs/reconciliation.html

React Native: Does updating a ListView dataSource through setState rerender the whole component?

1 Answers