onScroll event not firing for multiline TextInput

[dereksweet]

Environment

Environment:
OS: macOS High Sierra 10.13.4
Node: 6.9.0
Yarn: 1.6.0
npm: 3.10.8
Watchman: 4.9.0
Xcode: Xcode 9.4.1 Build version 9F2000
Android Studio: 2.3 AI-162.3934792

Packages: (wanted => installed)
react: 16.3.1 => 16.3.1
react-native: ~0.55.2 => 0.55.4

Description

I noticed recently that multiline controls stopped firing the onScroll event when the user slides their thumb/finger to scroll the contents of the input. See the app linked in Reproducible Demo, it is as simple as can be. The console shows the output 'focusing' onFocus, but it does not display anything for onScroll.

Reproducible Demo

https://github.com/dereksweet/MultilineScrollTest

[dereksweet]

This is only an "Old Version" because I used the recommended create-react-native-app tool, I can verify that this problem still exists on 0.56.0

[react-native-bot]

I am closing this issue because it does not appear to have been verified on the latest release, and there has been no followup in a while.

If you found this thread after encountering the same issue in the latest release, please feel free to create a new issue with up-to-date information by clicking here.

[zubko]

This issue is still happening on RN 0.57.8

Quick fix:

In node_modules/react-native/Libraries/Text/TextInput/RCTBackedTextInputDelegateAdapter.m

Add

#pragma mark - UIScrollViewDelegate

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
  id<RCTBackedTextInputDelegate> delegate = _backedTextInputView.textInputDelegate;
  if ([delegate respondsToSelector:@selector(scrollViewDidScroll:)]) {
    [delegate performSelector:@selector(scrollViewDidScroll:) withObject:scrollView];
  }
}

[antonellil]

@zubko that fix works great. this seems worthy of a PR into RN to fix this? EDIT: looks like this has been added, disregard