DougBanksPersonal cc30e2b57c Update RCTNavigator.m
Summary:
I am using ReactNative in a hybrid App.

We have a setup like so:

Native Navigation Controller
  Native Tab Controller
    Native View Controller wrapping React
      React Navigation Controller
        React View Controller 1
          React View Controller 2
  Native View Controller 2.

When I pop Native View Controller 2 off the Navigation stack, I get a seg fault on this line:

NSUInteger indexOfFrom = [_currentViews indexOfObject:fromController.navItem];

I believe what's happening:
Your code is listening to Nav Controller transitions, assuming that they are all from React Native Nav Controllers.
You are catching this one instead, which is actually a Native Nav Controller transition.
You start trying to access the pushed/popped view controllers as if they were react native view controllers.

In this case, the view controllers are not react native -> no navItem field -> seg fault.

Solution: if we are catching this transition but it isn't from our react native nav controller, just
Closes https://github.com/facebook/react-native/pull/5495

Reviewed By: svcscm

Differential Revision: D2857473

Pulled By: nicklockwood

fb-gh-sync-id: cc7f0a16e2e0cea56ca9e49bcb87db4ebd3a0905
2016-01-22 17:27:32 -08:00
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2016-01-22 17:27:32 -08:00