React Native Deep Linking for iOS and Android

We live in a new era where everything is connected and we share links more often than before. We also want our customer to reach the desired page, as quickly as possible regardless of the platform they are using. ne

If you are not using Deep Linking you are not having optimal customer experience.

Deep linking does not only mean to have a clickable link which opens up your app but it is a smart way to navigate to the desired page.

What is Deep Link?

Deep linking is a technique that allows an app to be opened to a specific UI or resource, in response to some external event. The “deep” refers to the depth of the page in an App hierarchical structure of pages. This is a very important feature for user engagement, it also makes the app more responsive and capable of navigation to arbitrary content in response to external events like Push Notification, Emails, web links etc.

You must have seen generic linking before like when using mailto:abhishek@nalwaya.com it will open the default mail app with prefill my email. We will implement similar URL schemes in our example which will handle external URIs. Let’s suppose that we want a URI likemyapp://article/4 to open our app and link straight into an article screen which shows article number 4.

What problem Deep Link solve?

Web links don’t work with native mobile apps.

If you use your mobile device to open a link to an article, you are taken to the destination in your web browser even if you have the article app installed. This is a problem because the article app is a better user experience than the mobile version of the article app.

The different way of implementing Deep Linking?

There are two ways of implementing deep linking:

• URL scheme
• Universal Links

URL schemes are a well-known way of having deep linking, Universal links are the new way Apple has implemented to easily connect your webpage and your app under the same link.

URL schemes are more easy to implement then Universal Links

Setup the react native project for both ios and Android

We are using react-native CLI to create a project and in that, we will create two pages Home screen and then an Article page. Then we will create deep links like myapp://article/4 and myapp://home to open these pages.

react-native init DeepLinkExample
cd DeepLinkExample

After creating a project we will add react-navigation and then use link command to link react native gesture handling.

It's not necessary that you use react-navigation for Deep Linking. Since its most popular navigation library for React Native, that's why we have used this in the tutorial.

yarn add react-navigation
yarn add react-native-gesture-handler
react-native link react-native-gesture-handler

Create an src folder in the root and add Article.js and Home.js file.

import React from 'react';
import { Text } from 'react-native';
class Home extends React.Component {

static navigationOptions = {

title: ‘Home’,

};

render() {

return <Text>Hello from Home!</Text>;

}

}

export default Home;

We have created a react component which renderd text Hello from Home!. Now we will create a file Article.js in src folder and add following code:

import React from ‘react’;

import { Text } from ‘react-native’;

class Article extends React.Component {

static navigationOptions = {

title: ‘Article’,

};

render() {

const { id } = this.props.navigation.state.params;

return <Text>Hello from Article {id}!</Text>;

}

}

export default Article;

We have created two components Home.js and Article.js we will now add this in React navigation routes. Open App.js and update the following code:

import React, {Component} from ‘react’;

import { StyleSheet, Text, View} from ‘react-native’;

import { createAppContainer, createStackNavigator} from “react-navigation”;

import Home from ‘./src/Home’;

import Article from ‘./src/Article’;

const AppNavigator = createStackNavigator({

Home: { screen: Home },

Article: { screen: Article, path: ‘article/:id’, },

},

{

initialRouteName: “Home”

}

);

const prefix = ‘myapp://myapp/’;

const App = createAppContainer(AppNavigator)

const MainApp = () => <App uriPrefix={prefix} />;

export default MainApp;

We have created react navigation and created routes for two pages. We have configured our navigation container to extract the path from the app’s incoming URI.

Setting up for iOS

Lets first setup for iOS, then will configure for Android. Open the iOS project by clicking DeepLinkExample/ios/DeepLinkExample.xcodeproj/

Open info.plist by clicking on top and then click on URL Types and add URL schemes. Update it as myapp. (whatever name you want to give to your app)

Then open AppDelegate.m in root folder and add import following header:

#import “React/RCTLinkingManager.h”

And then add this code above @end.

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url

sourceApplication:(NSString *)sourceApplication annotation:(id)annotation

{

return [RCTLinkingManager application:application openURL:url

sourceApplication:sourceApplication annotation:annotation];

}

We are done with the change for iOS, lets now test it for ios.

Testing DeepLink in iOS

To test DeepLink you need to run the app using react-native run ios or through Xcode. Then open safari browser on simulator and type: myapp://article/5, it will automatically open the app and open Article with no 5.

You can also open DeepLink by running following command on your terminal:

xcrun simctl openurl booted myapp://article/5

Configuring deep link for Android

To configure the external linking in Android, we need to create a new intent in the manifest. Open /src/main/AndroidManifest.xml add the new intent-filter inside the MainActivity entry with a VIEW type action:

<manifest xmlns:android=“http://schemas.android.com/apk/res/android”

package=“com.deeplinkexample”>

&lt;uses-permission android:name="android.permission.INTERNET" /&gt;

&lt;application
  android:name=".MainApplication"
  android:label="@string/app_name"
  android:icon="@mipmap/ic_launcher"
  android:roundIcon="@mipmap/ic_launcher_round"
  android:allowBackup="false"
  android:theme="@style/AppTheme"&gt;
  &lt;activity
    android:name=".MainActivity"
    android:label="@string/app_name"
    android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
    android:launchMode="singleTask"
    android:windowSoftInputMode="adjustResize"&gt;
    &lt;intent-filter&gt;
        &lt;action android:name="android.intent.action.MAIN" /&gt;
        &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
    &lt;/intent-filter&gt;
      &lt;intent-filter&gt;
          &lt;action android:name="android.intent.action.VIEW" /&gt;
          &lt;category android:name="android.intent.category.DEFAULT" /&gt;
          &lt;category android:name="android.intent.category.BROWSABLE" /&gt;
          &lt;data android:scheme="myapp" /&gt;
      &lt;/intent-filter&gt;
  &lt;/activity&gt;
  &lt;activity android:name="com.facebook.react.devsupport.DevSettingsActivity" /&gt;
&lt;/application&gt;

</manifest>

We are all set for Android.

Testing Deeplink on Android

To test Deep Linking, open project in Android Studio and Click on Run -> Edit Configuration. and the change Launch options to URL and update URL to myapp://article/13

Now run the application by clicking Run button on Android Studio:

You can also open deep link though terminal using:

adb shell am start -W -a android.intent.action.VIEW -d “myapp://article/3” com.com.deeplinkexample

Setting up Universal Linking

Now lets setup Universal link for your app. First will suggest to check out Apple Doc.

We need to first create apple-app-site-association for your app. Upload an apple-app-site-association file to your web server

{ “activitycontinuation”:

{  “apps”: [  “<TeamID>.<Bundle-Identifier>”  ]},

“applinks”: {  “apps”: [],

“details”: [{  “appID”: “<TeamID>.<Bundle-Identifier>”,

“paths”: [ “<WebRoutes>” ]}]

In our case it will look like this:

{

“applinks”: {

“apps”: [],

“details”: [{

“appID”: “D3KQX62K1A.com.example.deeplinkexample”,

“paths”: [“/home”]

},

{

“appID”: “D3KQX62K1A.com.example.deeplinkexample”,

“paths”: [“/article/*”]

}]

}

}

Few of the important point to note for the file:

• It should be publically available.
• It should be served as application/json mime type
• File should be less than or equal to 128 Kb
• It should be served over Https

You can test your file here -> https://branch.io/resources/aasa-validator/

Then log into developer.apple.com with your account and Enable Associated Domains in your app identifier.

Now Launch Xcode and select the Capabilities tab. Enable Associated Domains and add two values.

1. applinks:YOUR_WEBSITE_DOMAIN
2. activitycontinuation:YOUR_WEBSITE_DOMAIN

You are all set for Univeral Link !!

Wrapping up ?

Deep linking is a very important feature for user engagement. Its also a foundation for setting up push notification, Email Marketing, Social Sharing etc. So don’t wait to implement this in your app.

Code of the example can be found here -> https://github.com/nalwayaabhishek/DeepLinkExample

Happy Connecting the world with your app !!

Thanks for reading ❤

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How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

• Performance: It delivers optimal performance.
• Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
• UI design: React Native enables you to design simple and responsive UI for your mobile app.
• 3rd party plugins: This framework supports 3rd party plugins.
• Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

• Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
• Near-native user experience: React Native provides several native components, and these are platform agnostic.
• The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

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Top Android Projects with Source Code

Android Projects with Source Code – Your entry pass into the world of Android

Hello Everyone, welcome to this article, which is going to be really important to all those who’re in dilemma for their projects and the project submissions. This article is also going to help you if you’re an enthusiast looking forward to explore and enhance your Android skills. The reason is that we’re here to provide you the best ideas of Android Project with source code that you can choose as per your choice.

These project ideas are simple suggestions to help you deal with the difficulty of choosing the correct projects. In this article, we’ll see the project ideas from beginners level and later we’ll move on to intermediate to advance.

Android Projects with Source Code

Before working on real-time projects, it is recommended to create a sample hello world project in android studio and get a flavor of project creation as well as execution: Create your first android project

Android Projects for beginners

1. Calculator

Android Project: A calculator will be an easy application if you have just learned Android and coding for Java. This Application will simply take the input values and the operation to be performed from the users. After taking the input it’ll return the results to them on the screen. This is a really easy application and doesn’t need use of any particular package.

To make a calculator you’d need Android IDE, Kotlin/Java for coding, and for layout of your application, you’d need XML or JSON. For this, coding would be the same as that in any language, but in the form of an application. Not to forget creating a calculator initially will increase your logical thinking.

Once the user installs the calculator, they’re ready to use it even without the internet. They’ll enter the values, and the application will show them the value after performing the given operations on the entered operands.

Source Code: Simple Calculator Project

2. A Reminder App

Android Project: This is a good project for beginners. A Reminder App can help you set reminders for different events that you have throughout the day. It’ll help you stay updated with all your tasks for the day. It can be useful for all those who are not so good at organizing their plans and forget easily. This would be a simple application just whose task would be just to remind you of something at a particular time.

To make a Reminder App you need to code in Kotlin/Java and design the layout using XML or JSON. For the functionality of the app, you’d need to make use of AlarmManager Class and Notifications in Android.

In this, the user would be able to set reminders and time in the application. Users can schedule reminders that would remind them to drink water again and again throughout the day. Or to remind them of their medications.

3. Quiz Application

Android Project: Another beginner’s level project Idea can be a Quiz Application in android. Here you can provide the users with Quiz on various general knowledge topics. These practices will ensure that you’re able to set the layouts properly and slowly increase your pace of learning the Android application development. In this you’ll learn to use various Layout components at the same time understanding them better.

To make a quiz application you’ll need to code in Java and set layouts using xml or java whichever you prefer. You can also use JSON for the layouts whichever preferable.

In the app, questions would be asked and answers would be shown as multiple choices. The user selects the answer and gets shown on the screen if the answers are correct. In the end the final marks would be shown to the users.

4. Simple Tic-Tac-Toe

Android Project: Tic-Tac-Toe is a nice game, I guess most of you all are well aware of it. This will be a game for two players. In this android game, users would be putting X and O in the given 9 parts of a box one by one. The first player to arrange X or O in an adjacent line of three wins.

To build this game, you’d need Java and XML for Android Studio. And simply apply the logic on that. This game will have a set of three matches. So, it’ll also have a scoreboard. This scoreboard will show the final result at the end of one complete set.

Upon entering the game they’ll enter their names. And that’s when the game begins. They’ll touch one of the empty boxes present there and get their turn one by one. At the end of the game, there would be a winner declared.

Source Code: Tic Tac Toe Game Project

5. Stopwatch

Android Project: A stopwatch is another simple android project idea that will work the same as a normal handheld timepiece that measures the time elapsed between its activation and deactivation. This application will have three buttons that are: start, stop, and hold.

This application would need to use Java and XML. For this application, we need to set the timer properly as it is initially set to milliseconds, and that should be converted to minutes and then hours properly. The users can use this application and all they’d need to do is, start the stopwatch and then stop it when they are done. They can also pause the timer and continue it again when they like.

6. To Do App

Android Project: This is another very simple project idea for you as a beginner. This application as the name suggests will be a To-Do list holding app. It’ll store the users schedules and their upcoming meetings or events. In this application, users will be enabled to write their important notes as well. To make it safe, provide a login page before the user can access it.

So, this app will have a login page, sign-up page, logout system, and the area to write their tasks, events, or important notes. You can build it in android studio using Java and XML at ease. Using XML you can build the user interface as user-friendly as you can. And to store the users’ data, you can use SQLite enabling the users to even delete the data permanently.

Now for users, they will sign up and get access to the write section. Here the users can note down the things and store them permanently. Users can also alter the data or delete them. Finally, they can logout and also, login again and again whenever they like.

7. Roman to decimal converter

Android Project: This app is aimed at the conversion of Roman numbers to their significant decimal number. It’ll help to check the meaning of the roman numbers. Moreover, it will be easy to develop and will help you get your hands on coding and Android.

You need to use Android Studio, Java for coding and XML for interface. The application will take input from the users and convert them to decimal. Once it converts the Roman no. into decimal, it will show the results on the screen.

The users are supposed to just enter the Roman Number and they’ll get the decimal values on the screen. This can be a good android project for final year students.

8. Virtual Dice Roller

Android Project: Well, coming to this part that is Virtual Dice or a random no. generator. It is another simple but interesting app for computer science students. The only task that it would need to do would be to generate a number randomly. This can help people who’re often confused between two or more things.

Using a simple random number generator you can actually create something as good as this. All you’d need to do is get you hands-on OnClick listeners. And a good layout would be cherry on the cake.

The user’s task would be to set the range of the numbers and then click on the roll button. And the app will show them a randomly generated number. Isn’t it interesting ? Try soon!

9. A Scientific Calculator App

Android Project: This application is very important for you as a beginner as it will let you use your logical thinking and improve your programming skills. This is a scientific calculator that will help the users to do various calculations at ease.

To make this application you’d need to use Android Studio. Here you’d need to use arithmetic logics for the calculations. The user would need to give input to the application that will be in terms of numbers. After that, the user will give the operator as an input. Then the Application will calculate and generate the result on the user screen.

10. SMS App

Android Project: An SMS app is another easy but effective idea. It will let you send the SMS to various no. just in the same way as you use the default messaging application in your phone. This project will help you with better understanding of SMSManager in Android.

For this application, you would need to implement Java class SMSManager in Android. For the Layout you can use XML or JSON. Implementing SMSManager into the app is an easy task, so you would love this.

The user would be provided with the facility to text to whichever number they wish also, they’d be able to choose the numbers from the contact list. Another thing would be the Textbox, where they’ll enter their message. Once the message is entered they can happily click on the send button.

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