I am trying to use a library to enable localization. In the sample app when I click on a button, I get an error:
Unhandled JS Exception: `title` cannot be defined as a function in navigation options for `Settings` screen.
Try replacing the following:
{
title: ({ state }) => state...
}
with:
({ navigation }) => ({
title: navigation.state...
})
I am not sure when the problem is, but I think it´s on this peace of code
const AppNavigator = StackNavigator({
Home: {
screen: WelcomeContainer,
navigationOptions: {
title: 'Multi Language Sample App' // we advice using something static like your app's name or company name on the startup screen
}
},
Settings: {
screen: SettingsContainer,
navigationOptions: {
title: (navigation) => {
return navigation.state.params.title
}
}
},
About:{
screen: About,
navigationOptions: {
title: (navigation) => {
return navigation.state.params.title
}
}
}
})
I tried to replace the code with the proposed one but it didn't worked. Can you help me solving the problem?
react-navigation StackNavigator title prop expects a string value.
title
String that can be used as a fallback for headerTitle. Additionally, will be used as a fallback for tabBarLabel (if nested in
a TabNavigator) or drawerLabel (if nested in a DrawerNavigator)
If you want to set title dynamically you can try to implement below code.
Settings: {
screen: SettingsContainer,
navigationOptions: ({navigation}) => ({
title: navigation.state.params.title
})
}
Related
React Native activeTintColor not getting applied on selected drawer item. My react native navigation routes looks like,
-> DrawerNavigator
-> StackNavigator
-> HomeScreen
-> FirstScreen
-> SecondScreen
-> ThirdScreen
routes.js
const RootStack = createStackNavigator(
{
Home: { screen: HomeScreen },
ChapterGroup: { screen: ChapterGroupScreen },
Chapter: { screen: ChapterScreen },
}
const DrawerStack = createDrawerNavigator(
{
Home: {
screen: RootStack,
params: { id: 1 }
},
Kural: { screen: ChapterGroupScreen, params: { id: 2 } },
Detail: { screen: ChapterGroupScreen, params: { id: 3 } }
}, { contentComponent: DrawerComponent}
}
export default DrawerStack;
I managed to display the First, Second, thirdScreens on the sidebar by creating a new DrawerComponent which will navigate to the appropriate stack screen on drawer item click.
DrawerComponent.js
resetStack = route => {
let pressedDrwaerItem = route.route.key;
let id = route.route.params.id;
this.props.navigation.dispatch(
StackActions.reset({
index: 1,
actions: [
NavigationActions.navigate({
routeName: "Home"
}),
NavigationActions.navigate({
routeName: "ChapterGroup",
params: { title: pressedDrwaerItem, no: id }
})
]
})
);
}
render() {
return (<ScrollView>
<DrawerItems
{...this.props}
onItemPress={this.resetStack}
</DrawerItems</ScrollView>)
}
It properly gets navigated to the ChapterGroup Screen on Home stack but the drawer activeitem points to the Home not the second or third custom name. I think it may be because all the other screen exists inside the Rootstack. Is there anyway to manually set the second drawer item as active?
or any successful implementation of DrawerNavigator inside StackNavigator ? ie. I want to use two screens from stack navigator as drawer items. And if we navigated through to that particular screen from home screen, the corresponding drawer item should be selected.
Not sure whether you have tried contentOptions or not, but this is what i have found from react-navigation document
contentOptions for DrawerItems
There are various property you can use with contentOptions
contentOptions: {
activeTintColor: '#e91e63',
itemsContainerStyle: {
marginVertical: 0,
},
iconContainerStyle: {
opacity: 1
}
}
From above snippet i guess for you activeTineColor might be useful.
I'm not sure about your intentions with the resetStack function.
If you use the following function instead, it's going to work:
navigateToScreen = (route) => {
const navigateAction = NavigationActions.navigate({
routeName: route.route.key
});
this.props.navigation.dispatch(navigateAction);
}
//...
<DrawerItems
{...this.props}
onItemPress={this.navigateToScreen}>
</DrawerItems>
It sets the new screen without stacking it up. It sets the activeTintColor though.
I omitted the params passing to make it simple.
I would like to hide the Back button in the top-left corner, but I don't have any idea how to do it with react-navigation or react-native.
Just tried to use static navigationOptions = { header: null } but the < Back button was still alive.
I was using Modal and it works, but I want to know how to hide < Back button without using Modal.
Thank you in advance!
Using headerLeft: () => <></> works great in iOS, but in Android was still displaying the default back button.
I was able to hide it by adding the headerBackVisible: false on the screenOptions of the Stack Navigator or you could include it on the options for every Stack Screen.
More info at https://reactnavigation.org/docs/native-stack-navigator/#headerbackvisible
I suppose you're using a StackNavigator and that you don't want a header.
You need to use headerMode: none in the StackNavigatorConfig.
For example:
const ModalStack = createStackNavigator(
{
HomeScreen: { screen: Home },
ModalScreen: { screen: Modal },
},
{
headerMode: 'none',
mode: 'modal',
}
);
More info in the react-navigation docs.
It depends upon the react navigation version you're using, try this
const ModalStack = createStackNavigator(
{
HomeScreen: { screen: Home },
ModalScreen: { screen: Modal },
},
{
headerMode: 'none',
header: null
}
);
if it is StackNavigator default config, go to StackNavigator:
defaultNavigationOptions: {
header: null,
},
const Stack = createStackNavigator();
<Stack.Navigator screenOptions={{headerShown: false}}>
createStackNavigator is a function that returns an object containing 2 properties: Screen and Navigator. Both of them are React components used for configuring the navigator.
Now below Stack.Navigator, you can place your screens using <Stack.Screen name="Home" component={HomeScreen} />. In name, you can give any name, and in component give the name of your component.
I have a React Native app with a Navigator. I also have a few screens and a header (common to all screens).
In my header I have a button that toggles the app's language. Passing the language to the Navigator's props I'm able to access it in the screens and translate stuff around.
The only thing I can't change is the tabBarLabel property in the navigationOptions of each screen.
I've tried to simply write:
MyStack1.navigationOptions = {
tabBarLabel: myGlobalTranslationFunction('MyOriginalLabel1', this.props.screenProps.language)
};
But that didn't work.
As a tree, you can think of App being the root of my app, which has a state.language passed to the Navigator by:
<Navigator screenProps={ {language: this.state.language} }/>
In my Navigator.js file, I have, for example:
const MyStack1 = createStackNavigator({
MyScreen1: MyScreenComponent1,
MyScreen2: MyScreenComponent2,
MyScreen3: MyScreenComponent3,
});
MyStack1.navigationOptions = {
tabBarLabel: 'MyLabel1'
};
export default createBottomTabNavigator({
MyStack1,
MyStack2
},
{
initialRouteName: 'MyStack1',
tabBarOptions: {
showLabel: true
}
}
);
I think this problem lies in defining that the labels depend on the language prop, but I don't know how to do that. I thought about writing an actual class that extends React.Component for the Navigator, but I'm not sure how someone who do that, since the code above was basically the one I got by following the documentation.
What's react-navigation version you are using?
You can pass down the translations through screenProps of the Navigator.
<Navigator screenProps={{
myStack1: i18n._('stack1TabBarLabel'),
myStack2: i18n._('stack2TabBarLabel')
}}/>
And modify how createBottomTabNavigator create the component.
export default createBottomTabNavigator({
myStack1: {
screen: MyStack1,
navigationOptions: ({ screenProps }) => ({
tabBarLabel: screenProps && screenProps.myStack1
})
},
myStack2: {
screen: MyStack2,
navigationOptions: ({ screenProps }) => ({
tabBarLabel: screenProps && screenProps.myStack2
})
}
},
{
initialRouteName: 'myStack1',
tabBarOptions: {
showLabel: true
}
}
);
I am using SwitchNavigator from React-navigation for Authentication in React-native app. In the Authorized Section, I want to show a side Drawer for showing options like settings and log out. Entering into the Authorized section by clicking the button in tabs section user should be able to go to details section of an album. For that, I am using StackNavigator.
Issue:
After Authentication, Once I navigate to a section with Side Drawer in which stack navigator is present, nothing is rendered once navigated to Authorized section. Even the Test screen is mounted(checked through componentDidMount) nothing is displayed.
const Stages = createMaterialTopTabNavigator({
testStage1: { screen: TestScreen },
testStage2: { screen: TestScreen },
testStage3: { screen: TestScreen },
testStage4: { screen: TestScreen },
})
const AuthorizedSectionRouteConf={
navigation:{
stages: {
screen : Stages,
},
details : {
screen: DetailsScreen,
}
},
navigationOptions:{
headerLeft:null
}
}
const AuthorizedSectionNavigator =
createStackNavigator(AuthorizedSectionRouteConf.navigation);
const Config = {
navigation: {
UnauthorizedSection: {
screen: ({navigation}) => <LoginScreen navigate={navigation.navigate}/>,
navigationOptions:{
header:null,
mode:'modal'
}
},
AuthorizedSection: {
screen: createDrawerNavigator({
Home:{
screen: ({navigation}) => <AuthorizedSectionNavigator screenProps={{drawerNavigator:navigation}} />
}
})
},
TestSection: TestScreen
}
}
export default AppNavigator = createSwitchNavigator(Config.navigation);
Navigation after navigation:
this.props.navigate('AuthorizedSection')
==> nothing is visible after this.
However, If I navigate to TestScreen after Authentication which is simple text on screen
it rendered properly.
this.props.navigate('TestSection')
==> working properly
Figured out that there is no space for the component to render. Fixed it by setting the flex property for the parent container.
As a newbie in react-native i'm trying find a way to use react-navigation with different files without a navbar to navigate (for example just click on a button in the login view to enter the main view, clicking on log out button return to login view).
With react-navigation i made a global component 'Nav' and i placed in the main AppRegistry call:
AppRegistry.registerComponent('myApp', () => Nav);
While in the Navigator.js:
export const Nav = StackNavigator({
Login: { screen: LoginView },
AddStream: { screen: AddStreamView },
});
When i run
react-native run-android
i get the first view loaded under a white space (it should be the navigator, that i don't want in my app)
Now how can i remove the Nav from the view and how can i change View onPress a button component in another file?
There is another package that fill better my desire?
From the docs, setting the the headerMode to none should do the trick. This will hide the header on all of the screens defined in that StackNavigator. Example:
const Nav = StackNavigator({
Login: { screen: LoginView },
AddStream: { screen: AddStreamView },
},{
headerMode: 'none',
});
If you want to control the visibility of the header so that it appears on some of the screens but not all of them, then you can set headerMode to screen and for each individual screen set [the navigation prop for header: { visible: false }. See docs here. For example, if you are creating the screen component in another file, it might look like this:
// In the main file:
const Nav = StackNavigator({
Login: { screen: LoginView },
AddStream: { screen: AddStreamView },
},{
headerMode: 'screen',
});
// Hidden for your Login screen:
export default class LoginView extends Component {
static navigationOptions = {
header: { visible: false }
}
// etc...
}
// Visible for your AddStream screen:
export default class AddStreamView extends Component {
static navigationOptions = {
header: { visible: true }
}
// etc...
}
Edit: missed the second part of your question.
For navigating to a different screen, you really should go through the Hello World tutorial as it explains it. Specifically, this section. Relevant example code from the tutorial:
render() {
const { navigate } = this.props.navigation;
return (
<View>
<Text>Hello, Chat App!</Text>
<Button
onPress={() => navigate('Chat')}
title="Chat with Lucy"
/>
</View>
);
}
In your case, 'Chat' would be either 'Login' or 'AddStream'.