Since I did not get any answers from the previous post, I am posting again.
I have many experiences in Android native development but am a beginner in React Native. Wish to build a React Native app but need to find out these answers before I can start making architecture:
Is it possible to import a native Android module/ SDK (which is programmed in Java/ Kotlin) into React Native app? (I believe it is yes as I saw many good articles on the internet)
If I import the native Android module/ SDK to React Native app, does the app runs on iOS devices as well? Able to use APIs which native Android module/ SDK supports? (Or do I need a native iOS module/ SDK for iOS itself?)
I think this is similar to question #2. After importing the native Android module, does it also run on the web without a problem?
Looking forward to getting answers.
Many thanks,
Yes it is possible to integrate Android Native Modules.
No app doesn't run on iOS device if you have only Android SDK, You need to have a native iOS module to integrate iOS Native Modules.
For Web, I don't think so since both are native modules.
For more, please ref : native-modules-intro
I have an Android app built from scratch using React Native. Can I migrate the same app to iOS? If so, how tough will it be?
The Android app is already built and working fine.
If the app is done in React Native, you could build it using Xcode, of course you need a Mac, https://facebook.github.io/react-native/docs/getting-started#xcode.
You can also try from command line
react-native run-ios
Remember that you still need to install Xcode and the tools needed to build on the simulator or your device.
Also remember that you might have to do some changes in your code, not always the code for android works in iOS, moreover if you are using native modules done by you or from a library.
A project written in react-native should, by default, work on iOS.
Normally tho, every package you have used, some styles still differs from each other from platform, some things are avaiable to do on Android and not on iOS, some things are avaiable on iOS and not on Android.
Some packages needs linking. Some needs additional steps to run on iOS changing some datas/informations using xcode. (like deep linking).
On react-native 0.60 you need to install the pods manually as it's not done by the autolinking, there are a lot things to check and it may not be automatic for the majority of the cases
I am new to React Native and first of all it is the best framework for building cross platform applications using the JSX.
Few questions that are stinging me to know that:
When we run the app created with react native, does it convert the
Javascript code into native Java or Objective-C and then this native
code is executed in the phone to run the app and get the output?
When we pack the application created with the React Native, does we get the pure compiled native code in this file i-e .apk or ipa(same as created with pure Java or Objective-C)?
I am using the React Native application development method Native Code development(Android Studio + React Native + Virtual Device - followed the documentation on the React Native site).
Question #1 is already asked on the stack overflow but i am failed to understand because i am beginner in react native.
Please can some one answer my questions in simple and easy explanation?
Again, please easy words explanation !!!
No, the React Native framework is native code, but your Javascript code is included in the build as Javascript and interpreted at runtime. This is how you're able to debug code changes without rebuilding your app, and use services like CodePush to deploy new Javascript bundles to already deployed binaries.
Yes, react native is essentially a JS library built on top of Java and Objective-C, and compiles to native code.
Google recently announced android instant app. Which basically is code splitting. Will this work with React native apps, since react native build will generate main js bundle.
Any thoughts how one can take best of both the technology, Especially with Hybrid React Native Android Apps?
NDK is supported on Android 5.0 and higher now! But do let them know if there are incompatibilities lurking somewhere.
Reference
you can also check facebook/react-native
The recently launched react native features just iOS app example and docs.
Yes.
React Native for Android was released September 14th, 2015.
Docs: http://facebook.github.io/react-native/
No. You can't build Android apps with this release.
Facebook has indicated that they are working on an Android version, and famously said "give us 6 months", which some people have taken as a promise. I wouldn't base any important business decisions on the illusion that it will be unveiled when the 6 months is over, but you can at least take some hope in the fact that they're serious about making it production-ready before they give us access to it, and that it's not just a pie-in-the-sky hope.
Also, as others have pointed out, Facebook has already release apps that they've built with the Android version of React Native. So at least parts of it are ready for prime time.
UPDATE
Early support for React Native for Android has been pushed to GitHub!
As noted, there are several things that are currently not working if trying to port an application from iOS. But it's worth checking out.
https://github.com/facebook/react-native/commit/42eb5464fd8a65ed84b799de5d4dc225349449be
It is not aiming to be a cross platform, write-once run-anywhere, tool. It is aiming to be learn-once write-anywhere. -Colin Eberhardt, from Raywenderlich
Good news is that React Native for Android is finally here. (https://code.facebook.com/posts/1189117404435352)
while you can't do it right now, it shouldn't take that long.
The first React Native Android App has been published about two weeks ago in the play store as tweeted by the reactjs twitter account:
https://twitter.com/reactjs/status/615638361328349185
Great news! Now its possible!
"And so it happens, the commit we're waiting since about 6 months!" - usereact.com
Please read more on: http://www.reactnative.com/react-native-for-android/
Watch this video: https://www.youtube.com/watch?v=MNNR01NF290
I've tried out Facebook react native on Android and it really worked.
Simple Ubuntu install guide can be found here
Simple js files: link
Yes , We can now developed android apps too in react-native.
and some of the apps are already developed in react-native for android
suchs as:
1)F8
2)Facebook ads manager
3)Squad
4)Discovery VR
5)Ziliun etc..
and many more still counting.
Developers from around the world now opting react-native for mobile app development because of easy of use of JSX syntax.
and also it is commonly noted as simply the V in MVC.
Since React makes no assumptions about the rest of your technology stack, it's easily embeddable within an existing non-React Native app.
TLDR; Yes,
Detailed answer (As of November 2017)
React Native android application development is very stable and a good number of Android applications have been already built and used in production using React-Native.
You can find a showcase of applications here. Most of them have both IOS and Android versions.
You can also easily integrate your native Android java code to react-native. Refer here
As a developer who is building Android app using react-native with a lot of native java code dependencies, react-native runs stable and I found the documentation and community support is adequate.
Yes, it works for both the platforms ios and android, be sure to mention code entry points in app.js if it uses different code for different platforms. However native functions like native events or location manager need to be coded in native languages and then exported using RCT_EXPORT, you can find more about it in the docs
Sure,
Using React Native you can build real mobile app. real app means close to platform or simply can say 99% native app.react native provide easy way for building native android app using javascript for lucrative design.You have basic knowledge of android studio and error fixing in android studio related native module integration and good understanding of react.js then you can build android app using react native.
Basic Requirement for android app
1. Configure android studio please follow below link and avoid installation of python.
https://facebook.github.io/react-native/docs/getting-started .
2. for UI you will learn flex-box from official documentation.
I thing that is enough
Yes, not just with android but also with iOS using XCode
Yes, you can make real-world mob application with React-Native. React-Native is used to create a hybrid mobile application. In this, we write code in javascript which gets converted to swift for ios and java for android.
Yes, You can build the Android app using React Native. For this, you have to install Android Studio with all the required SDKs. You can run your React Native app in Android simulator by using Android Studio and command line both.
For command line, run the following command:
react-native run-android
Otherwise you can open the android project in Android Studio which is created by React Native in android folder and run the project from there.
Happy Coding.. :)
Yes, you can definitely build android apps using react-native.This is one of the great benefits of React Native. Before Facebook created it, you had to build your app twice and with different code : one for iOS using Swift or Objective-C and one for Android using Java or Kotlin.