current selected place
How to do situation like this in react native ?
When I select next place it will show current place map , and when I press back it should show last seen map of that place.
Thanks.
Use redux and store the data like a stack. And on back button press pop out the last object from the stack.
Related
Hey I'm just starting out with React Native CLI.
I want to have a button which will add an item in the ScrollView. And the new Item should lead to a new Screen when you press it. But I don't have an idea how to make this nor do I know how to google that xD. Does anyone know how I can make this?
I just have a button which leads to another screen when pressing it.
I hope someone can help me :)
First you have to clear few things and make the logic.
1)Either you want to save that item datathen show it in scroll view, make it Pressable and then u can navigate to a different screen.
Or
You just want to show the data in the scroll view. Once you reload, the data is gone. So that's my bro (In my opinion) is of no use.
For the first step .
You need to store the data in a storage and then fetch it in a scroll view,
make it Pressable and navigate to a different screen.
(hint: If you want to make it Pressable then you can fetch the data into a card component and then call that component in a scroll view).
Now grab your keyboard and start searching on it.
I want the user to fill a form step by step. So right now i have 3 screens with data stored in each screen (via useState) and when user is done with this screen i navigate to the next screen and pass the data along through screen params.
This works fine except when user goes back and forth between the screens, then data from the last step gets lost, because screen gets killed and user would have to reenter it.
So i'm wondering what would be the best way to solve this issue?
react native 0.64
react navigation 5
My favourite way to deal with this sort of multi-page data storing is to use React Context. This way you can add and read which data you've gathered across any component (or in this case screen) that you have wrapped in the provider.
Here's a good resource: https://betterprogramming.pub/react-hooks-and-forms-dedb8072763a
I want to get original state when exist screen and return back to current screen in react native.
I hope this is the situation where you are navigated to screen B from screen A. Now you are returning back to screen A.
As react holding the latest state values in this scenario, you have to do it manually.
Inside componentDidMount(), consider this method
this._navListener = this.props.navigation.addListener("willFocus", () => {
// reset the state variable here...
});
this willFocus method has been called every time that particular page coming to the front view. Try this If you are still not clear, please revert back to me.
I am creating tabs in my app using react-navigation by createTabNavigator.
What I want to do is how can I show a portion of next screen in tab in the current screen. The Idea is to show the user that there exist another view
What I have already done is that everything except the for showing the next screen in current one, is there any prop or option that will allow me to shrink down the page container?
This is not possible with react-navigation.
Try using a carousel library like react-native-snap-carousel (https://github.com/archriss/react-native-snap-carousel). As you can see in their showcase apps, this library does exactly what you want.
I recently implemented navigation in my app using NavigatorIOS in React Native. However, I think I've encountered a problem. Say I have 10 nav buttons on my home screen. Correct me if I'm wrong but I'm assuming (since I haven't done the backend yet) that if I use the first button to navigate to the next screen (let's call it Second.js), wrote/saved some data, and then went back and navigated to Second.js with the second button, that data from before would still be there? If so, is there a way for each button to navigate to a different "version" of the same screen? For example, could each button go to its own version of Second.js so that each button has its own local data in its Second screen, or would I have to make Second1.js, Second2.js, Second3.js, etc.? If the former isn't possible, I'd need a fixed number of nav buttons, plus a lot of memory is wasted with all these new classes that are basically replicas of each other. Thank you!