I have some questions regarding react native and react native keychain.
I'm new to react native and trying to build a mobile application.
How can I store cookies in react native and if it's possible how can I send it to backend just like in web where I have to do is ( credentials : "include" )? ( I found some people say it's possible and other said no it's not possible. So I'm confused. )
Which is the secure way to authenticate ? ( I have access token and refresh token )
Will the user have to login again after the mobile device is restarted cuz the saved token is lost ?
How to make the application responsive since there is no media query. ( or might be. So far I haven't seen media query )
Which is the best animation library navigation library in your opinion ?
Qestions I forgot to add.
Is react native keychains encrypted ?
Can I store my refresh token or access token in react native keychains ?
For 1,2,6,7 i guess this should answer how to safely store data.
Secure storage in react native
So basically on ios its keychain as you mentioned and in android its secured shared preferences.
No, if you store data in the above methods, it persists even if the user has closed / logged out. If only the user has uninstalled it gets removed.
You can use flex property to make it responsive , and calculate the width and height dynamically . const width = Dimensions.get("window").width
5.Best animation library is react-native-reanimated. it works pretty smooth since everything runs on native thread. reanimated
Do reach me out in case of any concerns.
Related
I already have working google sign in, although with just a regular button. How do I render a button that matches google's sign in guidelines with the rainbow G and all? I cannot use the React Native Google Sign In package, as I am using Expo Go.
how you doing ?
So, the best way to get a nice Google, Facebook login in expo is doing a good custom button, is not fair just to tell you to do your own, without even let an example for you. right ?
The best advise is to use React Native Elements, it helps a lot doing your components in React Native and its also avaible to Expo.
#The killer social icons from react native elements would be awesome!
https://reactnativeelements.com/docs/2.3.2/social_icon
you can also use an fontawesome button
An speacial snack example i made to you.
https://snack.expo.dev/VCYpu9tk1
oficial docs
https://docs.expo.dev/guides/icons/#button-component
Is there a way in React Native to find out, for example, which map app, browser, or whatever user has set by default on his device?
As we mentioned in the comments, opening apps from the phone can be handled by Linking
I have an app in React Native, that uses the bluetooth connection to read data from external devices.
I need a way to continue to read this data in background when, for example, the user starts a reading session and put the app in background.
What should I use to do this?
My code is divided in two parts:
Scan and Connect
Reading Data from external devices.
You need a background service for this. The following link for Android will help you.
github => react-native-foreground-service
If you want, you can do it yourself as described on the RN official site. But you'll have to write Java code for it.
React Native => Native Module
I have a use case in which the user should be able to click on a slider that has its data served from server.
The data contains some information that would be used to:
Open another view and initialize it with some parameters.
Open external app(s) and send data to it.
Can I use the Linking api in react to make it navigate internally within the app or is that reserved only for react navigation? My intuition is to use something like this:
Linking.canOpenURL(retrievedDate).then(supported => {
if (!supported) {
// use react navigation
} else {
Linking.openURL(retrievedData);
}
}).catch(err => console.error('An error occurred', err));
But I'm not sure if that's going to be the best practice/most generic one?
Your suggestions are highly appreciated.
Linking means you are online and running a web application.
React-Native is for developing (with React type coding) MOBILE apps. A mobile app is not running in a browser and its pages are not linked to URLs. So you should be using the navigation, which creates a certain UI for Android devices and a different UI for IOS (Apple) devices, and allows the user (and/or the programmer) to "navigate" between the "screens".
If for some obscure reason you are developing a web app with React-Native, you can of course use the linking api. https://facebook.github.io/react-native/docs/linking
I'm trying to understand how I can do a signature capture in React Native. My App is created with create-react-native-app and Expo and I'd prefer to not have to eject the app to get this functionality to work.
Would it be possible to wrap something like this in a webview? https://github.com/szimek/signature_pad
I've also looked at this project, https://github.com/RepairShopr/react-native-signature-capture but it requires me to eject the app and use react-native link.
Looking for any advice or suggestions on how to implement this feature while keeping my project as straightforward as possible (ideally, using create-react-native-app, but if this isn't possible could someone please explain to me why?)
The way React Native works is that each component available in React Native maps to a native component in the underlying platform.
ie. a <Image /> is an ImageView in Android and a UIImageView.h in iOS.
The Javascript code itself runs in a Javascript thread on each platform and as you use Components in React Native, there's a translation layer that passes information from JS into the React Native bridge that then results in corresponding native components being created.
By default, React Native has included the following components: https://facebook.github.io/react-native/docs/components-and-apis.html#basic-components which means that only those components come out-of-the-box in React Native. If you want other components, then you have 2 options, either create a "composite" component in which your JS component is written into other JS components or, if your feature needs a native component not yet exposed by React Native, write your own "native" component to expose certain native functionality to your React Native code.
The way Expo works is that they have wrapped React Native and a handful of 3rd party components and built it within their application. The reason why you can't use a 3rd party native component they don't support is because when that component is used, the app itself doesn't have translation code to go from JS to a native Android/iOS view.
So, to do what you're asking, you'd need to find either a "native" drawing component that Expo has included in their platform/app. OR you need to find a "composite" drawing component that is built with other default React Native components (or other components Expo supports).
ie. On Android, I might build this with a Canvas view, but from what I can tell React Native doesn't support that object natively, so I would probably write this myself, etc.
It's hard for Expo to support every 3rd party "native" component out there because React Native is open source and it iterates so fast that most community-built components aren't always up to date or they might conflict with one another.
I am using react-native-signature-capture.
Working properly on both Android and iOS.
I know it's been a while, but there is an interesting article here: https://blog.expo.io/drawing-signatures-with-expo-25d1629ca1ac
Wait, but how?
Using “expo-pixi”, you can add a component that lets you choose your brush’s color, thickness, and opacity. Then when your user lifts her finger, you get a callback. From there you can take a screenshot of the transparent view or get the raw point data if that’s what you’re looking for.