reactjs – react-native this.setState不工作

在navbarChanged()>如果条件,我正在做一个this.setState.这是HomeTab的类型,但setState似乎没有工作.

任何线索/指针？

class HomeTab extends React.Component {
  constructor() {
    super()

    this.setState({
      isNavBarHidden: false
    });
  }

  updatePosition(lastPosition) {
  }

  navbarChanged() {
    console.log("received navbar changed event",AppStore.navbarVisible());

    if (AppStore.navbarVisible()) {
      StatusBarIOS.setHidden(false)
      this.setState({ isNavBarHidden: false})
      // this.state.isNavbarHidden is still true here
      this.render();
    }
    else {
      StatusBarIOS.setHidden(true);
      this.setState({ isNavBarHidden: true});
      this.render();
    }
  }

  componentDidMount() {
    AppStore.addNavbarChangeListener( this.navbarChanged.bind(this) );
  }

  componentWillMount() {
    StatusBarIOS.setHidden(false)
    this.setState({ isNavBarHidden: false });
  }
}

这里是我的render()代码：

render() {
    return (
        <NavigatorIOS style={styles.container}
            navigationBarHidden={this.state.isNavBarHidden}
            ref="navigator"
            initialRoute={{
              title: 'Foo',component: HomeScreen,passProps: { parent: this }
            }}
        />
    )
  }