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Nothing is better than building apps with JavaScript. Unless you are building mobile apps. JavaScript is for building web apps, and using it to build native mobile app used to not be possible. It was hard for any web developer to dive into building native mobile apps. They have to learn Java, or Objective-C …or any programming language that was used for this purpose.
That is, until Facebook’s React Native broke this barrier. React Native comes with great advantages like building cross-platform apps for both Android and IOS. Before React Native, you had to write your code twice — one for Android and one for IOS. That’s no longer the case.
Code School's iOS App Development class: You can get a grasp on the basics of iOS development for free through Code School's intro classes. Stanford's iOS Development Classes: Stanford has a set. IOS vs Android: Which Should You Build Your Mobile App on First Now that you have finally decided it’s time to build a mobile app, there are some decisions that need to be made. One of those decisions is choosing which operating system you’re going to launch on. Create a shared codebase to build a multiplatform app that offers widgets and an app clip. Compile a library of shaders and write it to a file as a dynamically linked library. In theory, with Catalyst, any code you write for iOS should translate to macOS in some way or another. If you find a place where it isn’t working, you can quickly write custom code to fill that gap. The app we are going to build is a basic list/even app in which you write some data into the text field and then send it to the database. The item will then be displayed in the table. The IDE we are going to use is Microsoft Visual Studio Community 2017 for Mac. The source code of this project can be found here.
This article is an intro to the world of React Native, so get ready ?.
Why React Native?
Right, so why React native and not any other technology?
It gives us many solutions that other technologies can not afford. Here is what you can do with React Native:
Building native mobile apps
React Native allows us to write native apps in JavaScript for both iOS and Android. It gives us the ability to use all the native components like gestures, push notifications, camera, and location. There are some other JavaScript libraries for building mobile apps like ionic or PhoneGap. But those libraries use Webview, and the apps built with those technologies are not native.
Building cross platform mobile apps (iOS and Android)
Yeah, with React Native you can build mobile apps that can run on iOS and Android. 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. React Native solved this problem so you can build your React Native app and it will work in iOS and Android. Awesome! ?
Write your code all in JavaScript and React
While you are building React Native apps, you will actually write JavaScript. Reactjs code allows us to build great UI and user experience components.
Getting started with react-native
Starting with react-native can be exciting, but at the same can be a bit confusing. The first step is to install it, and there are several ways to do it:
Using expo-cli:
expo-cli is a command line tool. It downloads and installs the React Native boilerplate for you, integrated with expo API (check here for installation guide). It’s an easy way to build a React Native app, and it’s the recommended way if you’ve just started with React Native.
expo-cli gives you many options. You can run and test your application on a mobile device without any configuration. Scan a QR code and your app will open up with expo mobile app. You can explore other mobile applications built with React Native on the browser over a web interface called appertize! Best canadian tax software for mac 2015.
Using react-native-cli
The react-native-cli does the same job as expo-cli, but with a different approach and extra advantages. The apps that are installed with react-native-cli provide us the option and the ability to create our own native modules in our app. You don’t need to eject your application to be able to make native modules. Ejecting makes you able to use native modules and write you own (we will explore how to write native modules in another part).
Developing React Native apps on different platforms is a different process. Some times we need some specific configuration for a specific platform. For example to build for Android, you need to use the Android SDK, so let’s explore how this works!
Building mobile apps for Android
There are some requirements you need to install to start developing for Android. First, you have to download and configure both Android SDK and Android Studio. You can download them with this link here.
After downloading Android Studio you need to install some APIs as well. To do that open Android Studio, then click settings tab this window will open up:
First, check ✔️the platform you want your react-native to support in the SDK Platforms tab (for example Android 6.0 Marshmallow). Then switch to SDK tools.
And check
Android SDK Build-Tools
, Android SDK tools
, and google play service
. Under Android SDK Build-Tools select all the platforms:- Starting from 19.0.0 to 20.0.0
- From 22.0.0 to 24.0.0
- And 25.0.2 , 26.0.1 to 26.0.3
- 27.0.3 and 28.0.1 to 28.02
Now we are done with SDK and Android Studio. The next step is the emulator. The emulator (or the simulator) is where we have to run and test our app. There are many different choices.
![Best Best](/uploads/1/2/6/3/126389130/942196379.jpg)
You can use Android Studio emulators. You check here how to create an emulator to use on Android Studio. Honestly I never used them. I prefer Genymotion or a real device instead.
Genymotion
Genymotion is a desktop application that provides a virtual emulator to test your application. I like to use it a lot because it’s fast. ? It gives you options to create a customized phone with the features that you can find in any real device. For example enable Wifi, Location, and Camera. I highly recommend you use Genymotion over Android Studio emulators or any other emulator.
Using real devices
Nothing is better that using real devices to run and test your app. This is because it lets you knows how you application looks like on a real device. It makes you feel the reality of your work in a way the virtual device doesn’t give. So if you have the ability to use a device, don’t hesitate.
https://turbokind.weebly.com/hp-8500a-software-for-mac-107.html. Up to this point, we’re ok with Android — but what about iOS?
Building react-native apps for IOS
![Macos Macos](/uploads/1/2/6/3/126389130/174334973.jpg)
Running React Native for iOS doesn’t look much different from Android. The same React Native app that runs in Android can run on iOS as well, with some exceptions.
For example if you want to run on an iOS device, you need to have a MacOS. Talking about MacOS and iOS, you don’t need to download any extra dependencies such as the SDK for Android to run React Native on iOS.
Regarding Emulators, Xcode has nice emulators that you can use to test your React Native app. You can check this post that shows some tricks to use with Emulators.
Macos App Develop
In MacOS you can run both iOS and Android. You can definitely install Android Studio and Genymotion on MacOS. This possibility doesn’t exist on a PC where you can only run the Android emulator but not an iOS emulator. So you are lucky ?if you have a MacOS — enjoy ?.
So now we have the environment to build a React Native app and we’ve installed everything, but how is the React Native code written? It’s so simple: you will actually write Reactjs code.
You can check the official guide to get some practice with React Native. I recommend this great article to start “React Native YouTube Replica.” It will guide you step by step to create your first React Native app.
Wow! Up until now you are fine and you are coding with react-native. ? But you need to check and debug your errors and see the logs of your code. Yeah the logs!! So we need a debugger! How do you debug with React Native?
Build Ios App In Macos Write 7
Debugging react-native
Debugging your code is very important, not just with React Native but with any other programming language. So in your React Native code, you need to know what’s going on. There are many different ways to debug a React Native app like:
Debug with Chrome devtools
React Native gives you the option to use Chrome devtools to see the logs of your app. To debug with Chrome and enable debugging mode in your emulator, on the keyboard just click
Ctrl+ m
.This screen will pop-up:
And then choose
Debug Js Remotely
. This will open a tab in Google Chrome with this address http://localhost:8081/debugger-ui/
. That’s for using Chrome devtools, what about other options?Using React-native-debugger
React-native-debugger is a great tool to debug React Native code. It’s a desktop application that gives you many advantages. It comes with Redux devtools and React-devtools integration. You can debug the style as well. It’s actually the best debugger for React Native and it’s the one that I use. Usually it’s available on MacOS, Windows, and Linux. Cant download pages app on my mac. Check out the installation and integration guide.
I think it’s enough at this point. This is the first part of the absolute guide for building mobile apps with React Native. In the next part we are going to dive into more technical tips and issues like how we can use native components, the React native API, integration with other libraries, Redux , GraphQL and stuff like that. So subscribe to this mail-list to stay tuned when the next part comes out. Thank you for your time. ?
You can always find me on Twitter ?
Native Mac apps built with Mac Catalyst can share code with your iPad apps, and you can add more features just for Mac. In macOS Big Sur, you can create even more powerful versions of your apps and take advantage of every pixel on the screen by running them at native Mac resolution. Apps built with Mac Catalyst can now be fully controlled using just the keyboard, access more iOS frameworks, and take advantage of the all-new look of macOS Big Sur. There’s never been a better time to turn your iPad app into a powerful Mac app.
Designed for macOS Big Sur.
When an app built with Mac Catalyst runs on macOS Big Sur, Remove pronto app from mac. it automatically adopts the new design. The new Maps and Messages apps were built with the latest version of Mac Catalyst.
Get a head start on your native Mac app.
Your iPad app can be made into an excellent Mac app. Now’s the perfect time to bring your app to life on Mac. The latest version of Xcode 12 is all you need. Begin by selecting the “Mac” checkbox in the project settings of your existing iPad app to create a native Mac app that you can enhance further. Your Mac and iPad apps share the same project and source code, making it easy to make changes in one place.
Optimize your interface for Mac.
Your newly created Mac app runs natively, utilizing the same frameworks, resources, and runtime environment as apps built just for Mac. Fundamental Mac desktop and windowing features are added, and touch controls are adapted to the keyboard and mouse. By default, your app will scale to match the iPad’s resolution. On macOS Big Sur, you can choose “Optimize interface for Mac” to use the Mac idiom, running your app using the native resolution on Mac. This gives you full control of every pixel on the screen and allows your app to adopt more controls specific to Mac, such as pull-down menus and checkboxes.
Even more powerful.
Build Ios App In Macos Write 10
The new APIs and behaviors in macOS Big Sur let you create even more powerful Mac apps. Apps can now be fully controlled using just the keyboard. You can create out-of-window and detachable popovers, control window tabbing using new window APIs, and make it easier for users to select photos in your app by using the updated Photos picker. iOS Photos editing extensions can now be built to run on Mac. And your app is even easier to manage when it’s running in the background with improved app lifecycle APIs.
Macos App Store
New and updated frameworks.
Mac Catalyst adds support for new and updated frameworks to extend what your apps can do on Mac. HomeKit support means home automation apps can run alongside the Home app on Mac. The addition of the ClassKit framework lets Mac apps track assignments and share progress with teachers and students. Plus, there are updates to many existing frameworks, including Accounts, Contacts, Core Audio, GameKit, MediaPlayer, PassKit, and StoreKit.
Tools and resources.
Download Xcode 12 beta and use these resources to build native Mac apps with Mac Catalyst.