The primary use case is:
When a phone call occurs, I would want to do certain things inside my app after call end. I need this information about call - call length, caller phone number,type of call (in / out).
How I cat do it in RN?
I believe that there is no such API available for React-Native yet. Unless I'm wrong with my previous statement, you would have to write your own Native Modules for Android and iOS and bind them to your React Native project. Writing a native module is pretty simple, especially if you are familiar with the native language and APIs of each platform. Below are the links to the official docs.
Native Modules for Android
Native Modules for iOS
Related
I would like to add unity into my react native expo app. Since I searched I don't find anything helpful for me and related to my requirement. Is there any Sample/Reference code available for Unity Integration with React native?
Thanks in advance!
ive been in the same place. so currently theres no way to directly communicate it with Unity. But you can always communicate with native android/ios and that in turn communicates with unity. worked with that, and it works pretty well. so your native side should launch the game rather than react native directly starting it.
Basically call a native method in android side from react native --> that in turn starts / calls the unity module .
check this once
Hope this helps. otherwise please connect with me
The scenario:
For both iOS and Android, capture a "call-end" (hangup) event.
Use the captured event to trigger an options window.
What would the differences be to do this using Ionic, React Native, NativeScript, and Flutter?
Implementing a feature for Ionic, ReactNative, and Flutter are more or less same. You must probably write a plugin where you will have to implement the feature in native languages (Objective C / Java) and interface them with JavaScript for Ionic & ReactNative / Dart for Flutter.
But it's quite different with NativeScript as it has a JavaScript runtime that has 100% access to all device apis. You may write a plugin if you are willing to reuse the code or just directly access any api within your project using just JavaScript. If you use TypeScript, life will be even more easier with the typings for all the native apis.
Here is a video that briefly discusses the differences between these platforms.
I'm new in React Native, please bear with me. I have a library, which works fine in NodeJS and in browser. I would like to make it usable in React Native too.
I created an example project, imported the library but it threw an exception - Unable to resolve module `http`. If I try to import the browser version, document is not available.
Since then I'm scratching my head - how am I supposed to make my library to work in React Native if neither the core NodeJS modules, nor document are available?
React Native does not have access to Node.js modules such as http, so any code that relies on that functionality is not going to work. You will have to remove or replace it. As for document, window and other DOM-specific APIs, RN does not use a DOM at all, instead it uses its own rendering mechanism that is coupled to the native APIs. You will also have to remove all those calls and replace them with React Native-compatible ones.
Purely informational question, not really a problem but:
I remember following the instructions and seeing that there were some steps to get the react-native-fbsdk working. These steps involved messing with my android build.gradle and adding the iOS SDK and the info.plist and whatnot. That aside, why doesn't Facebook utilize the javascript SDK? Is it not possible? If so, why is it not possible for Facebook to do this? If it is possible, why did they opt to utilize the both the android and iOS SDK?
One value prop of React Native is that it's not just an HTML 5 website embedded in a native wrapper. It literally uses the native APIs/components, and the same goes for SDKs. Technically, a pure JS SDK could be optimized for a browser experience, rely on window or document, and while the functionality might be able to be executed natively, the polyfills provided in RN might not be enough to cover the implementation. The way it makes API calls are probably different too. The views are different too (no DOM in RN), so that would apply for any SDK views (button?).
I just finished converting an iOS SDK to a React Native package and I feel that the implementation will be more inline with how the original iOS SDK was designed, since it's using those methods under the covers instead of pure JS. JS is just invoking the native methods, not taking over the methods.
Just my $0.02...
I am building a React Native android app. In app I want to download and parse huge amount of data from server. Since JavaScript is a single threaded language I don't want to execute this on same React Native JSC context. Is it possible to create a Web Worker inside React Native JSC context and do extensive background jobs?
I have tried to do the same, but it says function not available.
There is a library exactly for that now. Check out https://github.com/devfd/react-native-workers
AFAIK there is no WebWorker polyfill for React Native. You will probably have to write a Native Bridge Module. If you want to avoid that , check out this post where they use requestAnimationFrame to break heavy tasks. https://corbt.com/posts/2015/12/22/breaking-up-heavy-processing-in-react-native.html
Nowadays a library that tries to do something similar with JSI but that is not declared exactly as WebWorker is react-native-multithreading.
For now there is no solution within react-native but news may come in https://github.com/react-native-community/discussions-and-proposals/issues/486