First-Class Citizen on Your Device Now

Maxim Salnikov

@webmaxru

The Mobile Web 2.0

We need a mobile app

You: ???

Maxim Salnikov

  • Google Developer Expert in Angular

  • Mobile Oslo / Angular Oslo / PWA Oslo meetups organizer

  • Mobile Era conference organizer

Products from the future

UI Engineer at ForgeRock

MobileEra.Rocks

  • All kinds of native mobile development

  • Progressive Web Apps

  • Mobile Web: React Native, NativeScript, Ionic

20% off with code

October 5-6, Oslo

Mobile Users

2014

October, 2016

> 2 000 000 000

60X Poland

Mobile Web

Milestones of the Mobile Web

Hybrid

Web

RWD

Native

?

The biggest mistake we’ve made as a company is betting on HTML5 over native.

Mark Zuckerberg

?

Mobile Web 2.0

Developer Experience

User Experience

Business Experience

How the things work

Ionic

One code base. Running everywhere.

  • Single code base for app stores and web

  • Web app in WebView

  • Powered by Angular

  • Built to native app with Cordova

  • Uses platform APIs via Cordova

Ionic

Open source framework for building truly native mobile apps

NativeScript

NativeScript

  • Uses Angular (not a requirement)

  • Uses JavaScript virtual machines to execute JavaScript commands

  • Direct access to native platform APIs

NativeScript

React Native

Learn once, write anywhere

React Native

  • Uses "bridge" between JavaScript and native

  • Inspired by React (Virtual DOM, etc)

  • Can be a part of native app

  • Can include modules with native code

React Native

Progressive Web Apps

Reliable, Fast, Engaging

Progressive Web Apps

  • Takes the best parts from native and web

  • Framework-agnostic

  • Use the latest browser APIs

Progressive Web Apps

Developer Experience

Installation, set up, scaffolding

  • Smooth NPM-based installation

  • CLI-based scaffolding

  • Tools to preview/emulate the app

  • Tools to share and deploy

Coding and UI

Angular

 

TypeScript

 

 

 

"HTML"

Ionic

<ion-header>
    <ion-navbar>
        <ion-title>Ionic Blank</ion-title>
    </ion-navbar>
</ion-header>

<ion-content padding class="content">
    <h2>Tap the button</h2>
    <button primary>TAP</button>
    <div class="message">16 taps left</div>
</ion-content>

Ionic

Writing a code

Angular

 

TypeScript

 

 

 

"HTML"

Angular?

 

TypeScript

or

Javascript

 

XML

NativeScript

<ActionBar title="NativeScript Blank"></ActionBar>

<StackLayout>
    <Label text="Tap the button" class="title"></Label>
    <Button text="TAP"></Button>
    <Label [text]="message" class="message"></Label>
</StackLayout>

NativeScript

Writing a code

Angular

 

TypeScript

 

 

 

"HTML"

Angular?

 

TypeScript

or

Javascript

 

XML

React

 

ES6

 

 

 

JSX

React Native

import React, { Component } from 'react';
import { View, Button, Alert, AppRegistry } from 'react-native';

class MainApp extends Component {

_onPress() {
  Alert.alert('I am so pressed!');
 }

  render() {
    return (
      <View>
         <Button onPress={this._onPress} title="Press me" color="#841584" />
      </View>
    );
  }
}

AppRegistry.registerComponent('MainApp', () => MainApp);

React Native

Action Bar / iOS

import React, { Component, PropTypes } from 'react';
import { NavigatorIOS, Text } from 'react-native';

export default class NavigatorIOSApp extends Component {
  render() {
    return (
      <NavigatorIOS
        initialRoute={{
          component: MyScene,
          title: 'My Initial Scene',
        }}
        style={{flex: 1}}
      />
    );
  }
}

Action Bar / Android

render: function() {
  return (
    <ToolbarAndroid
      logo={require('./app_logo.png')}
      title="AwesomeApp"
      actions={[{title: 'Settings', icon: require('./icon.png')}]}
      onActionSelected={this.onActionSelected} />
  )
},
onActionSelected: function(position) {
  if (position === 0) { // index of 'Settings'
    showSettings();
  }
}

Should be noted

  • There are iOS/Android specific limitations of ActionBar in NativeScript

  • There are cross-platform implementations of navigation in React Native (React Native Navigation)

Writing a code

Angular

 

TypeScript

 

 

 

"HTML"

Angular?

 

TypeScript

or

Javascript

 

XML

React

 

ES6

 

 

 

JSX

Any framework

 

Whatever

transpiled to

Javascript

 

HTML

Progressive Web Apps

...a new framework of the week

Hacker News PWA

  • A spiritual successor to TodoMVC

  • 8 implementations at the moment

Progressive Web Apps

Accessing hardware

Ionic

Native

Ionic Native

$ ionic cordova plugin add cordova-plugin-camera
$ npm install --save @ionic-native/camera

Ionic Native

import { Camera, CameraOptions } from '@ionic-native/camera';

constructor(private camera: Camera) { }

...

const options: CameraOptions = {
  quality: 100,
  ...
}

this.camera.getPicture(options).then((imageData) => {
 // imageData is either a base64 encoded string or a file URI
 // If it's base64:
 let base64Image = 'data:image/jpeg;base64,' + imageData;
}, (err) => {
 // Handle error
});

Accessing hardware

Ionic

Native

Direct access to native APIs

 

CocoaPods

 

Plugins

NativeScript

$ npm install nativescript-camera --save 

NativeScript

import { Component } from "@angular/core";

import { ImageAsset } from "image-asset";
import { takePicture, requestPermissions, isAvailable } from "nativescript-camera";

@Component({
    moduleId: module.id,
    templateUrl: "./using-camera.component.html"
})
export class UsingCameraExampleComponent {
    public imageTaken: ImageAsset;

    onTakePhoto() {
        let options = {
            width: 600,
            height: 300,
            ...
        };

        takePicture(options)
            .then(imageAsset => {
                this.imageTaken = imageAsset;
                console.log("Size: " + imageAsset.options.width + "x" + imageAsset.options.height);
            }).catch(err => {
                console.log(err.message);
            });
    }

}

Accessing hardware

Ionic

Native

Direct access to native APIs

 

CocoaPods

 

Plugins

APIs

 

Writing native code

 

Components

React Native

$ npm install react-native-camera --save
$ react-native link react-native-camera

React Native

import React, { Component } from 'react';
...
import Camera from 'react-native-camera';

class BadInstagramCloneApp extends Component {
  render() {
    return (
      <View>
        <Camera
          ref={(cam) => {
            this.camera = cam;
          }}
          aspect={Camera.constants.Aspect.fill}>
          <Text onPress={this.takePicture.bind(this)}>[CAPTURE]</Text>
        </Camera>
      </View>
    );
  }

  takePicture() {
    const options = {};
    //options.location = ...
    this.camera.capture({metadata: options})
      .then((data) => console.log(data))
      .catch(err => console.error(err));
  }
}

AppRegistry.registerComponent('BadInstagramCloneApp', () => BadInstagramCloneApp);

Accessing hardware

Ionic

Native

Direct access to native APIs

 

CocoaPods

 

Plugins

APIs

 

Writing native code

 

Components

Web APIs

What Web Can Do

User Experience

Performance

  • No serious performance difference between the native and NativeScript/React Native

  • A hybrid version of an app will never be as fast as a native version

Performance

  • Performance doesn’t matter so much as long as the hybrid app is fast enough

  • Javascript on Chrome for Android became 35% faster during the last year

Business Experience

  • 48% of consumers start mobile research with a search engine

  • NativeScript and React Native apps could only be distributed via app stores

  • Ionic goes smart cross-platform approach

Discoverability

  • 60% of apps in the Google Play app store have never been downloaded

  • The average user downloads <3 apps per month

  • 50% of US smartphone users download 0 apps per month

  • Very expensive to acquire users for mobile apps

App stores...

  • Easy to find

  • Easy to share

  • Easy to install

  • Easy to update

PWA wins!

We need a mobile app

You: !!!

> 50%

> 1 000 000 000

Dziękuję Ci bardzo

@webmaxru

Maxim Salnikov

Questions?

The Mobile Web Second Edition: First-Class Citizen on Your Device Now

By Maxim Salnikov

The Mobile Web Second Edition: First-Class Citizen on Your Device Now

They are so similar: Web and Mobile apps. What a nice option to use our web development experience (JavaScript, to be specific) to create cross-platform native-like applications. Is it that simple? What are the pros and cons of mobile web VS native? What is the difference between hybrid mobile apps, progressive web apps and JavaScript-compiled-to-native ones? Let's find the answers together! Attendees will get an overview of modern concepts for building web-based mobile applications, pros and cons from tech and business sides. Bonus: some practical advices on when to go for this option. For the each option I'll give advantages/disadvantages from both tech and business points of view so both developers and managers will get a big picture of today's (and tomorrow's) possibilities of the mentioned concept.

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