Why upgradation from Ionic 1 to Ionic 2 is required?
Millions of Mobile app developers around the world have built close to 1.2 million apps using an Ionic framework and Ionic 1 was built with the intention to help web developers build apps using their existing skill sets. Ionic is the most powerful and popular cross-platform mobile app development technology.
It’s possible to actually move the code developed in Ionic 1 to Ionic 2 without making any significant changes to the existing code. However, if you are new to Ionic then it’s suggested to develop your app irrespective of the platform in Ionic 2 due to a huge number of added features and code optimization.
Below are some of the reasons why developers intend to migrate from Ionic 1 to Ionic 2:
1. Improved Performance
Some of the routing rules present in Angular JS2 helps in making Ionic 2 about 5x times faster than the native Ionic 1 version, with the use of some of the components and directives instead of the traditional controllers, enables a higher performance of Ionic 2 version overall when compared to Ionic 1. Any of the components can also use Typescript (with all its features that offer better control over code) and are now easier to work with thanks to enhanced dependency injection in Ionic 2.
2. Native plugin Support and Storage Utilities for Ionic 2
Ionic 2 comes with a Powerful set of API’s support for accessing app’s that require Bluetooth support, Touch ID, Camera usage, GPS, Finger Print support etc. The ion-List has a wide range of interface elements for mobile app development ranging from basic text all the way to buttons, toggles, icon, thumbnails etc.
Additionally, it comes with an easy way to store key/value pairs and JSON objects, Depending on the platform being used by the app the storage engine picks the best one like when running an application on native app Storage will be prioritized using SQLite, while running on Web or Progressive Web App Storage will attempt to use IndexedDB, Web SQL. So the user need not worry about the Underlying storage engine. This storage engine can thus be configured either with particular storage engine priorities depending on the application being created or with custom configuration options for specifying the custom flags.
3. More components
Applications built with Ionic irrespective of the version being used are built with high-level building blocks called components and these components allow us to construct a User interface for the app being built. Ionic 2 comes with a number of components. Ionic 2 comes with 30 high-quality components in contrast to Ionic 1 which has around 15 core components and also Ionic 2 has countless API’s support and new features which makes it the most preferred choice among web app developers.
One of the major and newly added Navigation components of Ionic 2 allows navigating and linking to any page in the app and new pages are pushed onto and popped off and moved forward and backward in history. Ionic 2 library provides a wide range of default components like lists, segments etc. which can be easily added to your applications however sometimes it becomes necessary to build your own components and Ionic 2 allows you to build your own custom Component. All Ionic 2 components use OnPush strategy which clearly implies that any change detection is not performed at all times time but, instead only when the input changes this strategy avoids unnecessary rendering of components sub trees thus optimizing the app. Ionic 2 also possess more strong theming based capabilities and thus, supports a large number of new native APIs like Taptic on iOS Platform.
Also, Forms have gone through quite a bit of change in Angular 2 hence apps can have much more complicated and in-depth forms compared to Ionic 1 and these new Form controls works natively and also on the web.
4. Support for progressive Web Apps
Progressive Web App’s (PWA) is the new paradigm shift towards mobile app development which brings new API’s to app development to bring new user experience and capabilities. These apps thus attempt to combine features offered by both modern browsers with the benefits of mobile application development. Building PWA’s is the need of the hour as they are easy to delight the users.
Ionic 2 is embedded with a number of technologies which run in web view and when all of these are bundled as a Native app this makes the job even easier to work perfectly with any kind of browser without many changes. This is thus a huge advantage in itself when building your PWA with Ionic2, because if you already aware of how to build an Ionic 2 app packaged with a native application, then you are already 95% on its way in building a PWA.
Since Ionic 2 supports PWA’s an ionic developer can easily deploy the mobile app to the app store and mobile web platform with the exact same code. This is very important in recent times since different businesses have different requirements and some business cannot afford to lose their incoming traffic with just either of the app or web-version support thus requiring support for cross-platform-Where one app runs natively and other on the web without any changes to the actual code of deployment.
Now, in particular, all the enterprise teams across companies developing mobile applications would find TypeScript to be a blessing in disguise in order to achieve maintainability of the code and provide good stability to their code, which comes with a powerful type system and advanced IDE features bundled with it.
Ionic apps utilize Typescript and SASS code. This code thus needs to be converted into browser-friendly code irrespective of the type of browser being used or tested upon. A rock solid and functionally stable build processes thus required to achieve this level of programming in development of an application. @ionic/app-scripts which are present in Ionic 2 are thus a set of scripts that can be configured to provide and also make it easy to create either a simple code or an ultra-highly customizable build process in developing an application across various platforms and browsers.
Ionic 2’s new CLI allows developers to use more optimized CLI and makes it possible to create pages, components and directives right in the command line. It also provides effective error handling and this speeds up the development process for an app. Error handling helps in debugging the code to a large extent.
6. Faster DOM Performance
7. Introduction of Web Workers
With Ionic 2 running web applications with Web workers is made easier. Ionic 2 is already experimenting with Web workers and Ion-img component is one of the examples for the same. It delegates the HTTP call to web browsers and supports Lazy loading(Retrieve and load the image only on the viewport)
8. The new Web Animation API
Ionic 2 is based on Angular >=2.x, thus making the developers to easily access the new Web Animations (W3C) via the Angular animation system.
Ionic 2 is thus a huge step forward in the mobile app development industry although some set of components in Ionic 1 is similar to Ionic 2, Ionic 2 provides a performance enhancement and offers loads of tools that are not present in Ionic 1 as seen above.
Since Ionic 2 is completely revamped from Ionic 1 it will not be a very easy switch from Ionic 1 to Ionic 2, but however, it’s worth the switch. Ionic 2 is a step forward in Mobile-application development industry and is here to stay. And thus provides a performance boost and more maintainable code for app development irrespective of the platform being used. Ionic 2 supports a number of platforms like iOS, Android and Windows and also supports all major web browsers available in the market.
With Ionic 2 app will be more native than ever and is thus the most recommended way for creating apps.