TypeError: undefined is not an object (evaluating 'this.props.navigator.navigationContext')

[ct535101351]

大大，提示这个错误是怎么回事？谢谢了，求解答！万分感谢

[isszz]

navigator 相关的代码删除...因为rn已经移除了这个库

[Rananjaya]

.

1. comment this lines

this._listeners = [
this.props.navigator.navigationContext.addListener('didfocus', viewAppearCallBack)
]

}

componentWillUnmount () {
    this._listeners && this._listeners.forEach(listener => listener.remove());
}

2. and remove this line
   export default TimerEnhance(BarcodeTest)

3. and export like this ---

export default class BarcodeTest extends Component
this work for me

[Kishanjvaghela]

What about viewAppearCallBack?