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Crash: null object reference on init

See original GitHub issue

Hey,

We’re seeing the crashes using latest beta (with RN 0.51.1). Seems to be a race condition on init, let me know if you need more info. Using .beta8.

This code crashes:

class App extends React.Component<{}> {
  render() {
    return (
      <CoordinatorLayout style={{flex: 1}}>
        <BottomSheetBehavior
          peekHeight={70}
          hideable={false}
          state={BottomSheetBehavior.STATE_COLLAPSED}
        >
          <View style={{backgroundColor: '#4389f2'}}>
            <View style={{padding: 26}}>
              <Text>BottomSheetBehavior!</Text>
            </View>
            <View style={{height: 200, backgroundColor: '#fff'}} />
          </View>
        </BottomSheetBehavior>
      </CoordinatorLayout>
    );
  }
}

export default App;

This code works:

class App extends React.Component<{}> {
  constructor() {
    super();
    this.state = {
      ok: false,
    }
  }

  componentDidMount() {
    setTimeout(() => this.setState({ok: true}), 5000);
  }

  render() {
    return (
      <CoordinatorLayout style={{flex: 1}}>
        {this.state.ok && (
          <BottomSheetBehavior
            peekHeight={70}
            hideable={false}
            state={BottomSheetBehavior.STATE_COLLAPSED}
          >
            <View style={{backgroundColor: '#4389f2'}}>
              <View style={{padding: 26}}>
                <Text>BottomSheetBehavior!</Text>
              </View>
              <View style={{height: 200, backgroundColor: '#fff'}} />
            </View>
          </BottomSheetBehavior>
        )}
      </CoordinatorLayout>
    );
  }
}

Stack:

Attempt to invoke virtual method 'void android.support.v4.widget.ViewDragHelper.process TouhEnvent(android.view.MotionEvent)' on a null object reference

onTouchEvent
RnBottomSheetBehavior.java:273

resetTouchBehaviors
CoordinatorLayout.java:396

onAttachedToWindow
CoordinatorLayout.java:238

dispatchAttachedToWindow
View.java:16638

Issue Analytics

State:
Created 5 years ago
Comments:6 (3 by maintainers)

Top GitHub Comments

1reaction

cesardeazevedocommented, Jul 6, 2018

Shipped at 1.0.0

1reaction

cesardeazevedocommented, Jul 6, 2018

I’ve successfully reproduced your problem when i compiled with 27, i applied @FlorianBergmann patch and worked.

i will make a new release soon.

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