React native 动态更改StackNavigator标题中的图标
给定以下列出的StackNavigator选项:React native 动态更改StackNavigator标题中的图标,react-native,react-navigation,React Native,React Navigation,给定以下列出的StackNavigator选项: static navigationOptions = { title: 'Main', headerRight: ( <MaterialIcons name="grid-on" size={26}/> ), }; 静态导航选项={ 标题:"主要",, 头灯:( ), }; 我想在用户按下后立即更改标题中的图标,我如何才能实现它?这就是您可以实现的方法 static navigationOptions = ({ nav
static navigationOptions = {
title: 'Main',
headerRight: (
<MaterialIcons name="grid-on" size={26}/>
),
};
静态导航选项={
标题:"主要",,
头灯:(
),
};
我想在用户按下后立即更改标题中的图标,我如何才能实现它?这就是您可以实现的方法
static navigationOptions = ({ navigation }) => {
const { state } = navigation
if (state.params.yourCheck) {
return {
title: 'Your Title',
headerRight: (
<Button
title={'Button1'}
onPress={() => {
// do something
}}
/>
),
}
} else {
return {
title: 'Your Title',
headerRight: (
<Button
title={'Button2'}
onPress={() => {
// do something
}}
/>
),
}
}
}
使用React Navigation 5,您可以这样做
this.props.navigation.setOptions({
headerRight: () => <Button
onPress={() => this._scanNearByDevices()}
title= "Scan"
color="#000"
/>
});
this.props.navigation.setOptions({
headerRight:()=>此。_scanNearByDevices()}
title=“扫描”
color=“#000”
/>
});
每当你想更新你的标题按钮时,你可以使用上面的代码来动态更新
this.props.navigation.setOptions({
headerRight: () => <Button
onPress={() => this._scanNearByDevices()}
title= "Scan"
color="#000"
/>
});