Can you export a Flutter project to Java & Swift? - android

I have been working with Flutter for some time and have a functioning app that works just fine.
What I am trying to do is 'export' my Flutter project into native Android / Java to give to the Android developer and Swift / Objective-C to give to the iOS developer for further changes and customization.
This answer discusses the import functionality, but with regards to export is this something that can be done? Does Flutter have such an operation?

You can embed a Flutter app as view to Java and iOS, but you can not convert it to Java, Kotlin, Swift or Object-C
https://github.com/flutter/flutter/wiki/Add-Flutter-to-existing-apps
https://docs.flutter.io/javadoc/io/flutter/view/FlutterView.html
https://github.com/flutter/flutter/tree/master/examples/flutter_view
This example might also be related
https://github.com/flutter/flutter/tree/master/examples/platform_view

Related

How to use Swift library in Android native project

We have iOS and Android native applications. iOS team implemented the Onvif library in Swift (which also contains Objective-C libraries). We would like to integrate it into the native Android application.
We discovered possible solutions:
Write the same code in Kotlin by ourselves
KMM - if it's possible to share the Swift library
Translate Swift into Kotlin using https://vinivendra.github.io/Gryphon/
Gradle plugin for Swift https://github.com/readdle/swift-android-gradle
We prefer to use the original Swift library as all bugs would be fixed there.
What option do you suggest?
Thank you

How to build my react native app with TeamCity?

I start using Team City and my app builds with react native version 0.60.5...
I was wondering what will be the best and the easier way to build my app for iOS and android.
For iOS I was thinking using the Xcode plug.
For android I'm thinking to use Docker but its complicated and taking time to develop..
Does someone has any recommendation what to use for building my android app or Docker is a good solution?
And about the iOS, are you recommend use the Xcode plug or any other idea?
Thank you for the help
You can easily use TeamCity to automatize your build for Android, check the official documentation for more information:
You just need to be careful specifying the requirements for build your project for React Native, like:
version of react native, version of expo-cli, version of node that you are using in your project and etc...
For IOS, i recommend using fastlane, check this official tutorial from Apple.
Don't forget that you need to have an developer account for build to ios in React-Native.

Is that possible writing a Swift lib for Android NOW?

We're considering to write a lib for both iOS and Android using Swift instead of C/C++.
I found some talks about Swift on Android:
How we put an app in the Android Play Store using Swift
#Pragma Conference 2016 - Axel Schlueter - Swift on Android
Swift on Android: The Future of Cross-Platform Programming or White Whale?
In MillerTechnologies, we are working on that currently. Look those repos out.
https://github.com/MillerTechnologyPeru/swift-android
https://github.com/PureSwift/Android
We base our project on this repo
https://github.com/SwiftJava/swift-android-kotlin
but firstly you need to configure the toolchain
https://github.com/SwiftJava/android_toolchain

Can I build Android apps with 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.

How to write valid phonegap code to run It on android and ios?

Hello everybody I learn phonegap framework and I have few questions. I want to write app for android and ios. In android I write using Java and JavaScript so If I want to run it on other platform (like ios where is object-C) do I have to depend mostly on JS, move that code to MAC and build ios app??? I dont understand how to use my code in android and iOS... Do I need MAC? Do I need to know xcode?
If you are using cordova you have to use javascript/HTML/Jquery/Jquery Mobile/CSS, everything that you would use for the web.
Regarding the compilation if you have to work with IOS, you must have a MAC and then compile the project using xCode, but you do not need to know him well, you just need to know the process of publication.
For Android, you can instead use Ecplise.
If you want to develop cross-platform on an Android IDE, such as Eclipse then there is no need for a Mac & Xcode outside of testing. However, if you're saying that you already use Xcode and write in Obj-C then have a look at this tutorial to get you started:
http://www.raywenderlich.com/30734/phonegap-tutorial-a-cross-platform-zombie-app
Or this for a JQM/Android example:
http://www.gajotres.net/building-a-native-mobile-app-with-phonegap-and-jquery-mobile-1-4/

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