Warning: Can only update a mounted or mounting component.

[b27lu]

I check out master branch and try to run the ios version and get warning:

Warning: Can only update a mounted or mounting component. This usually means you called setState, replaceState, or forceUpdate on an unmounted component.

The stack trace points to stock-cell.js line 84 and 92.

  componentDidMount() {
    StockStore.listen(state => this.onStockStoreChange(state));
  }

  componentWillUnmount() {
    StockStore.unlisten(state => this.onStockStoreChange(state));
  }

  onStockStoreChange(state) {
    this.setState({
      selectedProperty: state.selectedProperty,
      selectedStock: state.selectedStock,
    });
  }

And the stock price is empty.

I've tried one of solutions on stack overflow that using ref, but it didn't work for me. Could someone look into it? Thanks!

[b27lu]

alright, I replace three method in the stack trace above by

    StockStore.listen(this.onStockStoreChange);
  }

  componentWillUnmount() {
    StockStore.unlisten(this.onStockStoreChange);
  }

  onStockStoreChange() {
    this.setState({
      selectedProperty: this.state.selectedProperty,
      selectedStock: this.state.selectedStock,
    });
  }

and add this.onStockStoreChange = this.onStockStoreChange.bind(this); in the constructor, then there's no warnings. But stock price is still empty though.

[wylhit1985]

why?can anyone help us?