BackHandler.removeEventListener

[RowgerGo]

Is this a bug report?

when I use BackHandler.removeEventListener,it is error "subscriptions[i] is not a function"

Environment:
windows 7 64
"react": "16.0.0",
"react-native": "0.50.3",

componentWillMount() {
    if (Platform.OS === 'android') {
      BackHandler.addEventListener('hardwareBackPress', this.onBackClicked());
    } else {

    }
  }
  componentWillUnmount() {
    if (Platform.OS === 'android') {
      BackHandler.removeEventListener("hardwareBackPress", this.onBackClicked());
    } else {
      // this.propstManger.addLengeData(this.props.navigator.getCurrentRoutes().length);
    }
  }
  onBackClicked = () => {
    alert('back')
    return true;
  } 

[dogbutcat]

The right version:

  constructor(props){
    super(props);
    this.onBackClicked = this._onBackClicked.bind(this);
  }
  componentWillMount() {
    if (Platform.OS === 'android') {
      BackHandler.addEventListener('hardwareBackPress', this.onBackClicked);
    }
  }
  componentWillUnmount() {
    if (Platform.OS === 'android') {
      BackHandler.removeEventListener("hardwareBackPress", this.onBackClicked);
    } else {
      // this.propstManger.addLengeData(this.props.navigator.getCurrentRoutes().length);
    }
  }
  _onBackClicked = () => {
    alert('back')
    return true;
  } 

[react-native-bot]

Thanks for posting this! It looks like you may not be using the latest version of React Native, v0.53.0, released on January 2018. Can you make sure this issue can still be reproduced in the latest version?

I am going to close this, but please feel free to open a new issue if you are able to confirm that this is still a problem in v0.53.0 or newer.

_{How to Contribute • What to Expect from Maintainers}