React Native 中嵌套 Webview，网页跳转后如何动态改变顶部导航栏？ - V2EX

React Native 中嵌套 Webview，网页跳转后如何动态改变顶部导航栏？ - V2EX

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这是一个创建于 1812 天前的主题，其中的信息可能已经有所发展或是发生改变。

我在 React Native 中用了一个 Webview，webview 显示首页的时候，顶部导航栏只有一个 title，网页跳转后，我想让顶部导航栏加一个返回按钮，请问如何实现？

1 条回复 2021-01-12 11:20:59 +08:00

1

croul

OP

2021-01-12 11:20:59 +08:00

搞定了。
获取 navigationOptions 的时候，加一个参数。let backButtOnEnabled= navigation.getParam("backButtonEnabled");
backButtonEnabled 为 true 的时候，设置 headerLeft 为返回按钮。
在组件中，初始化的时候设置该参数为 false 。this.props.navigation.setParams({backButtonEnabled: false});
需要显示返回按钮的时候，再设置为 true 。this.props.navigation.setParams({backButtonEnabled: true});

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