这个例子正在使用createBottomTabNavigator
,但我想同样的规则也适用。它需要使用自定义组件覆盖,tabBarButtonComponent
当用户无权访问给定选项卡时,该组件返回 null。
const Config = {
allow_locations: true,
allow_stations: true
}
LocationsStackNavigator.navigationOptions = ({navigation}) => {
return {
tabBarLabel: 'Locations',
tabBarTestID: 'locations',
tabBarIcon: ({focused}) => (
<TabBarIcon
focused={focused}
name={'md-settings'}/>
)
}
};
const MyTabNav = createBottomTabNavigator(
{
LocationStackNavigator,
StationsStackNavigator,
OrdersStackNavigator,
SettingsStackNavigator
},
{
defaultNavigationOptions: ({ navigation }) => ({
tabBarButtonComponent: CustomTabButton
})
}
);
class CustomTabButton extends React.Component {
render() {
const {
onPress,
onLongPress,
testID,
accessibilityLabel,
...props
} = this.props;
if(testID === 'locations' && !Config.allow_locations) return null;
if(testID === 'stations' && !Config.allow_stations) return null;
return <TouchableWithoutFeedback onPress={onPress} onLongPress={onLongPress} testID={testID} hitSlop={{ left: 15, right: 15, top: 5, bottom: 5 }} accessibilityLabel={accessibilityLabel}>
<View {...props} />
</TouchableWithoutFeedback>;
}
}